This can often be indicated with a fluctuating coolant temperature gauge also. I understand the coolant is pressurized and can be higher than 212 degrees F. 185F to 206F. In terms of resistance capacity, this coolant sensor has 20,000 ohms at 248 degrees Fahrenheit. If there is not enough coolant in the car or if something is preventing the coolant from working properly, the engine will not be able to cool down and will continuously overheat. P0126 Insufficient Coolant Temperature for Stable Operation Technical Description. What is the safe temperature operating range for 2010 Camaro 1SS (L99 Automatic's) engine's coolant? I feel things are safe when my coolant temperature reads 196* F, but after driving to work, on a sh … read more. Most ECMs mandate that the engine coolant temperature sensor record temperatures above 160º F within 15 minutes of the engine starting. Well I have noticed puddles of coolant under my car, however the car does not over heat the temp gage does stay in the middle. The temperature goes back to above 80 at highway speeds. I cycle the key and it runs and the gauge is in the normal range and runs there for twenty min. MotorMonitor learns about your unique engine through many sensors under normal driving conditions. However this should only be done in an extenuating circumstance AND NEVER in a cold climate location. Turning the AC on will increase temperatures, partially offset by fan operation. Dont forget it gets seriously cold so the coolant tempreture running 2 or 3C cooler is not really an issue. * For the Efi RV8 engine the best operating temperature is in the range 90 to 95 deg C. Need more information on how to fix the P0217 FORD code? Get Access to Factory Service Manuals. The extra pressure is limited by the radiator cap, which has a pressure valve in it. July 6, 2016, 12:49am #7. Gauge is stuck on the middle, as usual. I believe that this is not normal coolant loss so I checked under the car and removed the belly cover. Engines vary. In reality the temperature is far higher, if you let it out The coolant system on a car, (or other vehicle using water/glycol coolant systems) is pressurized at a. Up to 220 or so in stop and go traffic is OK. 5) have an electronically assisted thermostat. The sensor modifies a voltage signal from the Engine Control Module (ECM). At about 204°F (96°C), the radiator fan comes on and the temperature drops a few degrees. Stock thermostats are intended for normal driving conditions and aren't made for those intending to give their car a work-out (false). My coolant temp shows "normal" at 100 degees C. It still stores the code. It's not normal for the coolant level to drop. Realize that the problem could be an actual high temperature problem or it could be a problem with the temperature sensor or gauge. Some launched M models also had oil temp gauges. The ambient temp outside was around 46 Fahrenheit. The average operating temperature of an engine is found by measuring the temperature of the thermostat housing with an infrared thermometer and should be between 180-200 degrees Fahrenheit. Temp outside was 89 degrees in south texas. Not only does coolant keep your engine temperature under control, but coolant in these smaller passages also keeps the heat in the engine balanced. Weather conditions, load being carried and condition/age of the radiator can also have drastic affects on operating temperature. The sensor usually comes with two wires, one with a 5V reference voltage for the PCM and the other for ground signal. Do not open the hood until the car has completely cooled or the temperature gauge has moved from hot to cool. According to a previous SRT Enginner Q&A thread, it appears 212 is the "optimal" temp. The car can set at idle and the water temperature may be fine. Check for obstructions. Noticed this on my trip, gave more room the guy infront and temperature decreased. , 1996+) automobile engine, manufactured for sale or use in the US, will fall between 200 and 250 degrees F. At normal running temperature, Coolant is HOT. Since then have replaced radiator, alternator, spark plugs, & engine (rebuilt @ 62,000). I would say if you're consistently over 220F then you need to work on your cooling system. According Haynes the thermostat opens at 176 to 183 degree F. Water boils at about the same temperature desired for engine cooling. It's normal for the temp gauge to fluctuate slightly during warm-up (it varies from car to car) as the coolant gets up to temperature and the system reaches equilibrium due to the characteristics of the thermostat and gauge, but if you find it starts swinging wildly at any time it can indicate a head gasket problem and should be investigated. I let it cool down ran it a couple of miles at night with no problems. When I got home, I let it idle in the. It begins. However, it takes much longer for oil to come up to temperature than coolant. After the engine cools the level returns to normal. This can be due to a bad thermostat, temp sensors, or improperly mixed coolant. When the ECT (engine coolant temperature) is high (hotter), the resistence is low, and when the ECT is low (cooler) the resistence is high. I think its normal for the sensors to eventually go bad, everything eventually. What do you need to know about car temperature gauge? Paying close attention to your car’s temperature can spare you from unwanted and costly damage. On a longer drive the temperature gauge would fluctuate quickly from normal to 90 degrees, then down to 75, then slowly back again, sometimes 20-30 minutes apart. Radiator full. In which case it could go as low as 40C / 100F while driving and then climb to more normal ranges ( 90C / 200F ) when at tickover or in slow traffic. I can hear the fans come on for 10 seconds then off. It takes some driving time to learn what "normal" temperature is for a particular car. I had a 1999 306 that used an 83 degree thermostat with the cooling fans coming on at 97 so it was perfectly normal for the temperature gauge to fluctuate between 80 and 90 during normal driving as the thermostat opened and closed and coolant got sent though the radiator to be cooled, rising to around 100 when in traffic until the fans came on. A car's thermostat is a small heat-sensitive valve that opens and closes in response to engine temperature. It still stores the code. If they don't there may be a fault with the fan temperature sensor, the wiring or the fan itself. Is my engine coolant getting into normal operating temperature? 2. That's too cold for a fuel injected car if the temp gauge is accurate. Gauge is stuck on the middle, as usual. The sensor usually comes with two wires, one with a 5V reference voltage for the PCM and the other for ground signal. The gauge should read the temperature that the thermostat is for at normal operating temp. Some launched M models also had oil temp gauges. I drove it two trips prior to that. The Fix: Tighten or replace the belts. It is an OBD-II requirement. The coolant level should be up to the base of the filler neck. The cooling system removes about one-third of the heat produced in the combustion chamber. My coolant barely went over 200 and my oil got to 230-240 before I went for cool down laps. A car temperature gauge shows how hot the engine is. The coolant temperature routinely reached 217-221 deg. Google says normal coolant temp is 220 is normal for most cars to pass emissions and stuff. Above 240 you are nearing the boiling point of your coolant, so start being concerned. It was on for maybe 20 secs, the whole time the temperature of the engine on the gauge was. As the thermostat opens and coolant starts flowing through the radiator, the temperature of the lower radiator rises quickly close to the temperature of the upper hose. Jump to 80 degrees My temp was at 200 I was wondering the same thing since this is the first time since October when I got my car that the outside temp was this high. Working it hard on very hot days would usually get you somewhere around 220 or so. When the car is idling in a stop-and-go traffic, the temp will reach 205F. However, my temp guage displays just under 215, just over 215, even near 220 (up or down) on the same day in the same driving conditions with the a/c on or off. You should toss at least a 180 or stock 195 in as efi cars need to run in the 180-210 range to be most efficient. It is triggered when your Jeep Grand Cherokee's coolant temperature fails to reach the proper operating temperature. The CTS "measures" coolant temperature, as a heat resistance value, and transmits that value to the engine ECU, The value is measured in ohms resistance. I was just tracking my car in 100f weather with the mishimoto radiator and oil cooler. The temps drop quickly once I'm on the downhill. Normal coolant temperatures for most modern engines can be up to 210 °F. • A/C refrigerant pressure exceeds 1 310 kPa (190 psi). The other day as I was driving home, the car over heat while sitting in traffic. 3 during those. The ideal temperature for an automatic transmission is around 175 degrees. I had a 1999 306 that used an 83 degree thermostat with the cooling fans coming on at 97 so it was perfectly normal for the temperature gauge to fluctuate between 80 and 90 during normal driving as the thermostat opened and closed and coolant got sent though the radiator to be cooled, rising to around 100 when in traffic until the fans came on. Is it normal for the temperature to be slightly passed the middle on the temperature gauge? I bought the car 8 months ago and since then drove 4000 miles with no problems until last week. Cap the system and go for a test drive. All W204's with an M272 engine (2. Need more information on how to fix the P0217 FORD code? Get Access to Factory Service Manuals. As the coolant temperature rose closer to this ideal operating temperature, the bellows type thermostat door opened, allowing coolant to begin circulating through the radiator, while at the same time moving the sleeve up into place to block the bypass passage, shutting off its recirculation of the coolant before it entered the radiator. Coolant level is still fine, but my normal "high" coolant temperature is now 195 to 200 degrees. is normal then feel the heater hoses both should be HOT not WARM \015\012if they are not HOT then you have a flow problem poss pluged heater core you may need the heater core back flushed \015\012hope this helps. A fan will cut in if the car is stuck in traffic and the. Most coolant temperature sensors operate using electrical resistance to measure the temperature of the coolant. For the first 100,000 miles, it is necessary to check the coolant level simply to be sure you're not leaking or burning coolant. Tried it again the following morning still no problems. Around town, coolant temps can reach as high as 220F+. As the outside (ambient) temp rises it's normal for the engine to run a little hotter 200 degrees is safe with coolant, water boils at 212. 1A Auto has a large selection of Engine Coolant Temperature Senders for many makes and models, and ground shipping is always free!. Engine's drive belts may be broken or slipping. A 50/50 mixture of water and ethylene glycol antifreeze in the cooling system will boil at 225. There are many different types of coolant, so it's important to know what variety is right for your car or truck. Its below freezing around here just like most places. When fully open it is 203 degree F. Fill it to halfway between the MAX and MIN marks. First, the CEL came on with a code related to the radiator/thermostat/coolant. If the temperature gauge suddenly spikes high, there are a few possible reasons. The diff being is newer cars has the computer and sensors that can see a prob and change engine tune (air/fuel ratio, timing, etc) as needed to keep engine running detonation free. 2 years ago, I think, my wife told me it went up very high then down again quickly, I took it out and it stayed down at about 70 to 80 and has been like that ever since. Some books report that the sensor is on the intake manifold. 6 ounces (View shipping rates and policies) Domestic Shipping Item can be shipped within U. Car makes a bubbling/boiling noise when car is turned off I just drove my car for a little over an hour today, it was a pretty hot day, and when I turned the car off I heard a sort of bubbling/boiling sounds coming from around the radiator/passenger side. Modern car engines operate at a certain range of temperature for optimum performance. But friction still occurs between the moving parts, leading to heat buildups. i two have a fiat stilo 1. All other models used the air charge temperature sensor to estimate coolant temperature. While there is a small chance that there is an issue with the running temperature of your engine, by far the most common issue with trouble code P0128 is a faulty. Some launched M models also had oil temp gauges. My 99 explorer has a coolant temp sender for the computer and one for the temp guage. Once repairs had been done car would be normal temp for a bit then it starts to heat up bout 2 weeks later. Fill it to halfway between the MAX and MIN marks. The temperature gauge in your vehicle is designed to indicate the temperature of your engine's coolant. Its been fine for 7 or 8 years, maybe 40,000 miles, and i haven't changed anything but shocks since then. Louis oil to get it to stay at that temp. After the engine start, coolant temperature begins to rise. The optimum temperature would be around 220-230. My coolant temp shows "normal" at 100 degees C. With an adequately pressurized system and an efficient radiator, a higher-temperature thermostat (190 degree F instead of 180) will improve engine cooling—it will slow the coolant and do a more. This is regardless of whether it's 90° outside and I have the window open on the freeway, or whether I have the A/C on, it's 110° outside, and I'm stuck in bumper-to-bumper traffic. The car runs excellent, however, I have a few questions with respect to "normal" operating temperature. What is the Temperature of coolant system in cars? Wiki User 2010-01-04 20:36:05. I’ve actually replaced the thermostat several times. Electric fan or temperature switch faulty (Main cause of overheating on modern engines (The fan should start as soon as the temperature goes above normal) I Would NEVER attempt to drive a car that is overheating (you may cause a lot more damage e. I believe you can also get a aftermarket 160 degree stat if needed. normal coolant temperature operating. The thermostat in this car works properly. Now to my question; how hot is hot? My car temperature is normally around 180-220. Once the oil is at normal operating temperature, the oil pressure should indicate around 4 bar at 5,000 rpm. The Fix: Repair or replace the cooling fan. As the name suggests, coolant/antifreeze is necessary to reduce the freezing point of your engine's cooling system and raise the temperature at which the system will boil when compared to water. Engine coolant temperature should be around 190 to 200 degrees Fahrenheit. The engine temperature warning light on the dashboard generally appears as a thermometer with wavy lines next to it or a box with wavy lines inside of it. It will probably be seriously low. of over 240*F are likely to cause engine damage. By precisely monitoring the engines metal temperature instead of coolant temperature, the TM2 can detect engine overheating caused by low coolant, engine coolant leaks, radiator blockages, faulty thermostats, water pump failure and restricted air flow caused by grass and seeds blocking the radiator. Funny thing was that my coolant temperature gauge didn't go over a line over the half of the temperature gauge, but I noticed my oil temp was creeping up and it hit 280°F then the coolant distributor flange exploded letting all the coolant out. Been there all this week. January 29th, 2008 at 9:57 pm; A properly operating car has a thermostat that regulates how much coolant enters the radiator… coolant too hot and as much coolant goes in to get cooled; coolant not yet warmed up and the thermostat shuts down circulation so that the coolant in the engine block gets a chance to warm. Shut off the engine and clean. Then the radiator warning light came on. My temp gauge is erratic. I run an aftermarket probe in the upper radiator pipe since at this point is where the hot coolant comes out of the motor. On a water cooled engine, the thermostat blocks off the water (coolant) flow to the radiator until normal operating temperature is reached (usually 165 to 195 degrees). However, my temp guage displays just under 215, just over 215, even near 220 (up or down) on the same day in the same driving conditions with the a/c on or off. Antifreeze and Engine Coolant. In all cases the sensor is arranged so the coolant flows over it on the way out of the engine. Yes you can put water in your coolant for your vehicle only in non-winter weather states. seize the engine or crack the cylinder head). ) If the temp goes below the opening temp (180 in your example,) the stat closes and the temp goes back up. Engine oil is in the same enclosed area as the coolant (that is the engine) so it will be at or above the same coolant temperature. At 90 ºC its resistance is in the range of 200Ω to 300Ω. Only do this where it is legal! Repeat this process, monitoring coolant temperature. On a hot day, going up a hill with your air conditioner on, that is a normal temperature, and is nothing to worry about, as long as you aren't losing coolant. If the engine temperature is in the red section of the gauge and the coolant doesn’t flow into the radiator, then the thermostat may be the cause of your problem. Car was not running rough, and I was shocked when he said it was. At noon it started overheating again. An intermittent problem can be the worst. My 99 explorer has a coolant temp sender for the computer and one for the temp guage. Normal is 89°C (192°F). The engine will run at the temp the cooling system can maintain, period. As Quora User kind of put it, yes, 90°C, but that is a pressurized temperature. The cooling system checked out okay, but was told that the car was low on coolant. At about 204°F (96°C), the radiator fan comes on and the temperature drops a few degrees. When your car is on, an engine is running continuously. The fans will stay ON for approximately 3 minutes. Noticed this on my trip, gave more room the guy infront and temperature decreased. The coolant temperature routinely reached 217-221 deg. Your car relies on the coolant sensor to tell it if the coolant is getting too hot, and it relays that information to you on the temperature gauge. This depends on the rating of the thermostat. If I turn on the heat and fan to the max, the temp will drop back to 180F. Replace the cooling fan temp sensor. The temperature needs to be in that range at all times. No, once the coolant reaches the temp the therm is rated for it's going to open anyway. With engine at idle - Take note at what temperature the cooling fans kick in. The Fix: Repair or replace the cooling fan. No lights are on the dash. However, if your transmission is slipping a lot or you are pulling something heavy, the. It is designed and clearanced to operate at that temp. I thank you in advance for any advice. If you see the coolant in the radiator full after many warm-up/cool-down cycles, then it's burped. You'll get much better combustion at 200 or better. TTAC's Michael Posner reviews Redline's WaterWetter. As the engine temperature increases, the main valve opens further and the bypass valve gradually closes. Oh mama good thread just what i needed. You are correct: "With proper antifreeze a wide temperature range can be tolerated by the engine coolant, such as −34 °F (−37 °C) to +265 °F (129 °C) for 50% (by volume) propylene glycol diluted with water and a 15 psi pressurized coolant system" from en. If the sensor goes back to normal in 1988 and later Turbo 1 engines, the power limit light goes out and the car leaves limp mode. At normal operating pressure, Prestone Coolant/Antifreeze has a boiling point of 129°C, and a freezing point of -37°C. It's intresting that the temperature range or operating temperature is 190-210F. The temperature indicator on the coolant icon is to the far left - ie. It is not hot. The gauge should read the temperature that the thermostat is for at normal operating temp. The car was in the shop for some suspension work and I mentioned the issue: high coolant temp at stop and go traffic gets close to a 100, but does not quite hit it. I have no clue the normal operating temperature of the car. The next step is to see if the engine temperature sensor is working correctly. Great to see improvements with your car man but pls note that your coolant temperature guage 'hardly rising' like you said is an abnormally also, its suppose to within 5-7mins rise to 85 - 90degrees and remain that way for the rest of the day no matter the mileage u cover so pls check to ensure your car thermostat is still fitted. Then shut it down, let it cool and check the coolant level in your radiator and/or overflow bottle. It is possible that you need to add more coolant. Water can be used in a cooling system; as your cooling system is generally a 50/50 mix of distilled water and ant-freeze. Need more information on how to fix the P0217 FORD code? Get Access to Factory Service Manuals. If the gauge fails, then the computer runs in open-loop and the car gives off more emissions as a result of this, so a failure in this circuit must throw a code. As these degrade, failure of your water pump can occur. The Fix: Refill the coolant to the proper level. Engine coolant temperature gauge sender 805218T is for use with MerCruiser stern drive and inboard engines. Engine coolant temperature should be around 190 to 200 degrees Fahrenheit. The other code indicated a bad wheel speed sensor. To answer your question, yes, it's BAD! for your engine to run cold. Get the car quickly up to 70 MPH (120km/h) and slow back down to around 30 MPH (50km/h). Engineers need to. Here are the specifications. A fact that is often overlooked when mechanics evaluate a cooling system is the internal running temperatures of the cooling fluid, it is not unusual to have coolant temperatures exceeding 140ø C in the hotter areas of the modern engine and a general coolant temperature in the block approaching 130ø C. The risk of boiling is avoided by increasing the pressure in the system, which raises the boiling point. International Shipping. With today's smaller coolant capacities, the system doesn't have to be low by much for problems to surface. Right, the temp does come back up to the typical 48% indication and. Ideal Nitrite concentration for 50/50 antifreeze/water. It is crucial to have your cooling system work properly. When this part malfunctions, it can spell trouble for your car or truck. While sitting in a drive thru for a few minutes the temperature showed about 212 at the highest on the app, going down to 207 and back up to 212. There is no single "engine" temperature. When your car is on, an engine is running continuously. A few tips troubleshooting your car heater. According to a previous SRT Enginner Q&A thread, it appears 212 is the "optimal" temp. The cooling system maintains the engine at an ideal operating temperature using a thermostat. You'll get much better combustion at 200 or better. The Fix: Tighten or replace the belts. Auto Service Costs Find the prices for normal auto service activities including alignment, tuneup, timing belt replacement and more. Today, I monitored the coolant temp all day, driving about 200 miles for work, and noticed something different. I understand the coolant is pressurized and can be higher than 212 degrees F. The optimum temperature for an engine is 1,200-1,700 degrees F. Engine's drive belts may be broken or slipping. Some older vehicles have no coolant reservoir, so to check and add coolant, you have to open the cap on the radiator. If at any point the engine control unit sees an engine coolant temperature that is outside of what it has been told is normal, it stores a generic "cooling system error" code. Removed and cleaned the sensor but still getting the check engine but that could be from the coolant level so waiting to see what you guys come up with. 5) have an electronically assisted thermostat. What is the normal operating temp for the coolant?. Failed engine coolant temperature. * For the Efi RV8 engine the best operating temperature is in the range 90 to 95 deg C. The Engine Coolant Temp. Not as often as your oil does, but still, you will need to change or "flush" the coolant in your car. is normal then feel the heater hoses both should be HOT not WARM \015\012if they are not HOT then you have a flow problem poss pluged heater core you may need the heater core back flushed \015\012hope this helps. The fans will stay ON for approximately 3 minutes. You see the telltale signs of leaking coolant on the ground where your car was just parked. The coolant temperature sensor, abbreviated as CTS, in your car is an important device that enables the control unit to give alerts if the engine is overheating or if the temperature within the system is rising for some reason. The car was in the shop for some suspension work and I mentioned the issue: high coolant temp at stop and go traffic gets close to a 100, but does not quite hit it. According Haynes the thermostat opens at 176 to 183 degree F. Has high intensity warning lights that can be set using a 1 or 2 parameter algorithm. P1, P1 or P2, P1 and P2. Targeted coolant temp is 194F and on cool days at highway speeds, you can maintain this temperature close enough. Is my engine coolant getting into normal operating temperature? 2. It still stores the code. When I turn heater on the temperature goes back towards the normal area. All W204's with an M272 engine (2. Now when my car cools down, it sucks back the coolant it spit out as it achieved normal running temperature. Engines vary. i two have a fiat stilo 1. If there is not enough coolant in the car or if something is preventing the coolant from working properly, the engine will not be able to cool down and will continuously overheat. is 208*F, so the engine should run in the 192-208*F range. This resistance reading is sent to the vehicle's PCM/ECM (car's onboard computer) and is or can be used to activate emission controls or turn the engine's cooling fan on. The Triple display is set to show Oil Temp and a few other things so I can keep an eye on things with the new engine. The cooling fan provides air flow through the radiator when the car is not moving, such as when you’re stuck in traffic. Heat was plentiful, it ran great, no hot restart issue. I saw 214 once for a couple of minutes, but as soon as we stopped climbing the temp would quickly drop back down to the upper 190's. The temp goes back to normal when driving especially on the freeway. them temp gauge needle goes about 1 - 2 mm past the half way line. Instead, there are typically markings for cold and hot on the edges of the gauge and a normal range in the middle. Great to see improvements with your car man but pls note that your coolant temperature guage 'hardly rising' like you said is an abnormally also, its suppose to within 5-7mins rise to 85 - 90degrees and remain that way for the rest of the day no matter the mileage u cover so pls check to ensure your car thermostat is still fitted. Truck is running in the normal heat range. A car thermostat is a small device that sits between the radiator and the engine of a liquid-cooled car. If it is hot and you shut it off, the coolant temp will rise slightly. Bought a 180 degree one; surprisingly the old one had the "D 180" marking too (never changed before and the car was bought new from GM dealership). As these degrade, failure of your water pump can occur. Then it stays there. It can get up to 6,000 degrees F. * For the Carburetter RV8 engine the best operating temperature is in the range 85 to 90 deg C. At about 204°F (96°C), the radiator fan comes on and the temperature drops a few degrees. Need more information on how to fix the P0217 FORD code? Get Access to Factory Service Manuals. Targeted coolant temp is 194F and on cool days at highway speeds, you can maintain this temperature close enough. The standard coolant temp gauge in the dash stops at 190 unless the temperature goes significantly above that, then it will move. Any where from 165. The ideal temperature for an automatic transmission is around 175 degrees. The normal operating temperature of the coolant in an engine is about 210F to 240F degre The thermostat OPENS at 195F degrees; but, the temperature continues to rise to the normal operating temperature The temperature of the coolant can rise above 212F degrees because coolant is pressurized (NOT because the water is mixed with antifreeze). No matter what coolant your car uses, figuring out the right one for your car and the right amount to keep in the tank in cold and warm weather are critical to your engine's cooling system. Today, I took the new-to-me GXP coupe out for a spin. Also the coolant flow is the same at top and bottom hoses (conservation of material). On a hot day, going up a hill with your air conditioner on, that is a normal temperature, and is nothing to worry about, as long as you aren't losing coolant. In some cases, you may notice a sweetish, “hot water” smell coming from the engine, or even notice actual steam coming from under the bonnet. P0128 is coolant temp below regulating temp. Always wait until the engine has cooled before you work on it. That is normal operation. Still not having sufficient power & temp remaining between 205-212. The temp goes back to normal when driving especially on the freeway. With today's smaller coolant capacities, the system doesn't have to be low by much for problems to surface. At just 18-degrees above its normal temperature, the important inhibitors in the coolant that protect the water pump from cavitation, rust, scale, and sludge become less effective. At 190 degrees the gauge will drop all the way back down to 100 or below, and also at this time the anti-freeze in the radiator will bubble up or overflow and run out into the reservoir tank. Those numbers sound nearly the same as my 98' Deville, all is normal. TTAC's Michael Posner reviews Redline's WaterWetter. The ambient temp outside was around 46 Fahrenheit. For example, trigger the lights when rpm exceeds 6000 rpm, or when trans temp exceeds 230 F and coolant exceeds 210 F, or when air fuel ratio is above 12. 195 to 204 degrees depending on outside temperature. International Shipping. Coolants are by. Because coolant absorbs the heat generated by the engine and transports it to the radiator to cool down, it stands to reason that low or weak coolant levels mean its job performance is compromised and your car can. It is not hot. Car is high perf. Engines vary. I can only duplicte it when driving slow up a hill, once I've been driving for awhile. Driving, over the passes, temps have been peaking about 215, normal spring temps, driving up the mountain, 200-210. The Fix: Repair or replace the cooling fan. It features dual overhead camshafts (DOHC), 4 valves per cylinder, twin sequential waterjacketed turbochargers with a common charge air cooler (air to air intercooler). When I am driving the car around at normal speeds the coolant temp reading on the gauge is more or less spot on center where it should be (90 degrees Celcius/194 deg Fahrenheit). • A/C refrigerant pressure exceeds 1 310 kPa (190 psi). When you refill your radiator with new coolant remember to recheck the coolant level in the radiator again after you have run the engine up to operating temperature and then allowed it to cool off. Within the correct temperature range – depending on the vehicle, “operating temperature” is usually somewhere between 160 °F and 180 °F – fuel vaporizes efficiently, which enables complete combustion. Oh mama good thread just what i needed. Repair wiring. is 192*F and the low speed fan on temp. Many people get worried if their car gets up to 220 degrees. What is the Temperature of coolant system in cars? Wiki User 2010-01-04 20:36:05. Super hot! The coolant helps keeps the temperature of the engine at a max of 1,700 degree F. As the outside (ambient) temp rises it's normal for the engine to run a little hotter 200 degrees is safe with coolant, water boils at 212. Put the radiator cap back on. Basically, it’s a thermistor that changes resistance with temperature. The coolant temperature sensor is fastened to the intake manifold of an engine coolant and is often referred to as a negative temperature coefficient type of sensor. Depending on ambient temps, my (much less powerful N/A) car sees coolant temps (on a real coolant temp gauge) in the low 90s C (so 195-205F). The purpose of the thermostat is to keep the engine temperature the same no matter what the outside temperature. For a sports car they may have been pushing this concept to the limit, resulting in coolant temperatures higher than 190 on any moderately warm day. A 50/50 mixture of water and ethylene glycol antifreeze in the cooling system will boil at 225. And this explains your temperature gauge indicating a continuous lower-than-normal operating temperature. I bleed the system twice but my car is running at 210 degrees and at times the needle will increase and return back to the 210 degree mark. A 50/50 mix of liquid or coolant is usually sufficient. * For the Carburetter RV8 engine the best operating temperature is in the range 85 to 90 deg C. Why Engine Coolant Temperature is Important This entry was posted on April 15, 2016 by ScanTool. For a sports car they may have been pushing this concept to the limit, resulting in coolant temperatures higher than 190 on any moderately warm day. The engine coolant temperature (ECT) sensor test is simple and can help you fix your car faster. Fill with coolant, start car, check for leaks, check coolant level after all warmed up. In fact, that middle section of the gauge, between the cold and the hot readings, can represent a wide range of temperatures that the car's computer interprets as "normal. Cadillac, for example, specified the addition of “coolant tablets” to antifreeze in pre-2000 Northstar engines to eliminate a porosity problem with the aluminum engine block casting that could lead to coolant leaks. If the temp is not going above 185F after 15 to 20 minutes of driving, there is a problem with thermostat being stuck open. If you see the coolant in the radiator full after many warm-up/cool-down cycles, then it's burped. Then bleed again, again, again and again. But friction still occurs between the moving parts, leading to heat buildups. Then the radiator warning light came on. The thermostat will open between 192 and 195 and the coolant fans will turn on at 234 f. The standard coolant temp gauge in the dash stops at 190 unless the temperature goes significantly above that, then it will move. >> Warning! << Never, ever unscrew the temp sender with the engine running, or start it up with the sender loose in its threads!. A running engine is HOT. 5) have an electronically assisted thermostat. Low temps in the single digits and highs in the teens. The forward movement of the car forces air through the radiator, helping to cool the coolant inside of it so that it can be recirculated. By precisely monitoring the engines metal temperature instead of coolant temperature, the TM2 can detect engine overheating caused by low coolant, engine coolant leaks, radiator blockages, faulty thermostats, water pump failure and restricted air flow caused by grass and seeds blocking the radiator. Changing your Coolant on a pre-2000 BMWF650. This is above the normal operating temperature of most engines so there actually isn’t much reason to worry about the composition of our coolant in a pressurized system. If you have the digital read-out, the temp should never hit the 240 degree F mark. Normal temperature of to days cars run any where from 180Fahrenheit to 230 Fahrenheit. When driving slowly or standing still, the temperature increases. I have a Scangauge hooked up to my '14 Forester mainly to monitor the coolant and I have found that the coolant temp generally goes up to about 191 - 193 degrees. The 220 is the coolant temp. It is completely normal for the coolant level to change slightly from temperature changes. A running engine is HOT. So coolant is continuously being circulated or pumped. I drove it two trips prior to that. As others say, coolant temperature may fluctuate a bit, as you drive, then sit in traffic, however, a modern water temp gauge is calibrated that the middle of the gauge (where the needle normally sits once at operating temperature), is not a specific temperature, but more like a temperature range, for example. with enough oncoming air flow to avoid heat soak through engine bay air stagnation). So, you need to fix the problem first. On a water cooled engine, the thermostat blocks off the water (coolant) flow to the radiator until normal operating temperature is reached (usually 165 to 195 degrees). Replace the cooling fan temp sensor. In any aluminum-block engine, severe overheating can result in a warped block or warped heads, which in turn normally call for an engine replacement. I understand the coolant is pressurized and can be higher than 212 degrees F. The engine coolant temperature exceeds approximately 106°C (223°F). 195 to 204 degrees depending on outside temperature. How to check your cooling fan. Some cars substitute the coolant temperature sensor for the engine head temperature sensor. Above 240 you are nearing the boiling point of your coolant, so start being concerned. The ECM commands Low Speed Fans ON under the following conditions: • Engine coolant temperature (ECT) exceeds approximately 106°C (223°F). If your coolant doesn't seem to be leaking, and your car overheated once, then that probably means that the low coolant level was caused by the. The Fix: Repair or replace the cooling fan. I have a 2014 Wrangler Rubicon. Check your owner's manual to see if your car uses "long-life" coolant. How to check engine coolant. The other day as I was driving home, the car over heat while sitting in traffic. Why stop there? Be all you can be with INPA!. Your car relies on the coolant sensor to tell it if the coolant is getting too hot, and it relays that information to you on the temperature gauge. After having water pump replaced and various coolant losses for other reasons, I have had my DIC read up to 246 degrees, and the needle on the dash has never moved past the first hash mark to the left of the center temperature hash. I was just tracking my car in 100f weather with the mishimoto radiator and oil cooler. What is the normal temperature for the coolant in cars? My 2007 Chevy Cobalt has a feature that shows the coolant temperature and it ranges from 180 to 200 degrees. Says temp sensor. Failed stats will still usually show "normal" 190 on the cluster gauge if they reach 165 range as Dan points out. As the name suggests, coolant/antifreeze is necessary to reduce the freezing point of your engine's cooling system and raise the temperature at which the system will boil when compared to water. High Temperature. Around town, coolant temps can reach as high as 220F+. And some of the later models have an oil temperature gauge,but no engine temperature gauge,which makes the engine cool. Engine coolant level may be very low. And, a condition such as “Thermostat stuck in a closed position” would resist coolant flow leading to. The cooling fan provides air flow through the radiator when the car is not moving, such as when you’re stuck in traffic. The coolant temp will remain around 190F when the car is fully warm up and moving on a 65F day. Coolant that's diluted or weak can freeze when the temperature drops below 32 degrees Fahrenheit. What is the highest you have seen your coolant temperature get up to. Some cars substitute the coolant temperature sensor for the engine head temperature sensor. On hot days 90 degrees or hotter my car would go to. P0128 is a relatively common OBDII trouble code. The Fix: Tighten or replace the belts. I guess the cooling from the wind is extra. Repair wiring. Even if the engine is aluminum, a low coolant level could mean engine-damaging temperatures and surely cause poor heater performance in winter. (3) Faulty coolant temperature sensor (ECT) (4) Stuck open thermostat. You can safely operate to 240. Need more information on how to fix the P0217 FORD code? Get Access to Factory Service Manuals. If the concentration of antifreeze to water is upped to 70/30 (the maximum recommended); the boiling temperature under 15 psi of pressure goes up to 276 degrees. Please contact me regarding Errors and Omissions. Once repairs had been done car would be normal temp for a bit then it starts to heat up bout 2 weeks later. A running engine is HOT. The optimum temperature would be around 220-230. Symptoms of a faulty coolant temperature sensor can be: using more fuel (if more fuel is being burned because the computer thinks it’s cold) temperature warning light stays on while driving but coolant levels and engine temperature are fine; smoke coming from the exhaust due to the incorrect fuel mixture being burned. According Haynes the thermostat opens at 176 to 183 degree F. At about 204°F (96°C), the radiator fan comes on and the temperature drops a few degrees. Your vehicle is overheating frequently. P0217 FORD More Information. so i have a question about my problems: 1- how much is normal coolant temperature at operating engine? the environment temperature is 40*C. As the name suggests, coolant/antifreeze is necessary to reduce the freezing point of your engine's cooling system and raise the temperature at which the system will boil when compared to water. Go up to 15psi, which is normal for a car, and straight water boils at around 121C (250F). The coolant in your car helps keep your engine running smoothly. ) The Air Valve on the 1. Today, I took the new-to-me GXP coupe out for a spin. On older cars (50, 60, 70's) 160*F to 180*F was norm temp. This depends on the rating of the thermostat. An Engine Saver® constantly monitors the coolant level in your engine Over 70% of major engine blow-ups are caused by coolant loss going un-detected as the normal temperature gauge will drop in cases of sudden coolant loss because it needs coolant around it to work. Except when they reach a certain temperature they fail immediately. What is the maximum normal coolant temperature of my newly acquired 2011 335i sedan? Mine is 1 1/2 lines below 250F, that seems somewhat hot. Do not restart until it cools down to within normal operating temperatures. Reducing the mix ratio can easily lower the temperature by 15 F. Up to 220 or so in stop and go traffic is OK. When you start your engine in the morning, especially on a cold day, it is important to the engine management system that the engine gets warm as quickly as possible. TTAC's Michael Posner reviews Redline's WaterWetter. High Temperature. 0 liter, inline 6 cylinder engine. At just 18-degrees above its normal temperature, the important inhibitors in the coolant that protect the water pump from cavitation, rust, scale, and sludge become less effective. A fan will cut in if the car is stuck in traffic and the. Although the boiling point of Evans is 375°F, that doesn't mean it will reach higher operating temperatures. The 183 sounds like maybe trans temp or oil temp. The gauge should read the temperature that the thermostat is for at normal operating temp. 90 degrees F. Coolant needs to be changed too. Simply because the coolant (50% water 50% ethylene glycol or propylene glycol, sometimes 60/40. On the '91 and later Jeep 4. Repeat until you remove all the air from your cooling system. There are 3 main jobs that the antifreeze in coolant performs to keep the engine coolant temperature normal:. I have not taken it to the dealer yet. If the light blinks red then blue, an electrical malfunction in the cooling system is indicated. If the engine temperature is in the red section of the gauge and the coolant doesn’t flow into the radiator, then the thermostat may be the cause of your problem. It is an OBD-II requirement. NOTHING, besides cold feet, can be damaged by cooler coolant. What is the highest you have seen your coolant temperature get up to. Jump to 80 degrees My temp was at 200 I was wondering the same thing since this is the first time since October when I got my car that the outside temp was this high. Coolant Light Comes On. It's not normal for the coolant level to drop. A 50/50 mixture of water and ethylene glycol antifreeze in the cooling system will boil at 225. The coolant is constantly cycled through by the water pump, which allows the engine to run at an appropriate temperature. And some of the later models have an oil temperature gauge,but no engine temperature gauge,which makes the engine cool. The ECM commands Low Speed Fans ON under the following conditions: • Engine coolant temperature (ECT) exceeds approximately 106°C (223°F). For a sports car they may have been pushing this concept to the limit, resulting in coolant temperatures higher than 190 on any moderately warm day. I cycle the key and it runs and the gauge is in the normal range and runs there for twenty min. This can be due to a bad thermostat, temp sensors, or improperly mixed coolant. When I turn heater on the temperature goes back towards the normal area. The diff being is newer cars has the computer and sensors that can see a prob and change engine tune (air/fuel ratio, timing, etc) as needed to keep engine running detonation free. If the operating temperature exceeds what your owner's manual says is acceptable (usually between 200 and 230 degrees F),. If you have the digital read-out, the temp should never hit the 240 degree F mark. If the gauge fails, then the computer runs in open-loop and the car gives off more emissions as a result of this, so a failure in this circuit must throw a code. This in turn will give your Honda a chance to be free of overheating ( false ). And the coolant tank would rise when you turn the engine off because it stops flowing. And to no one's surprise, what you do to fix it is take out some of the antifreeze and replace it with water. Most engines today are designed to operate within a “normal” temperature range of about 195 to 220 degrees F. T-stat is there to simply deter coolant free flow through the system, to bring it to a particular temperature, usually - between 160 and 190 degrees. To easily do this, get one or two empty 4 litre water jugs and using a measuring cup, measure out the 2 litre and 4 litre marks and put these lines on the side of the jugs. This depends on the rating of the thermostat. In cold engine and an ambient temperature of 20 ºC the sensor resistance is between 2000Ω and 3000Ω. Coolant temperature at bottom of radiator is same as at bottom of engine (return to water pump). 5) have an electronically assisted thermostat. The exhaust system takes away much of the heat, but parts of the engine, such as the cylinder walls, pistons, and cylinder head, absorb large amounts of the heat. Driving, over the passes, temps have been peaking about 215, normal spring temps, driving up the mountain, 200-210. When you start your car in the morning, most of us are wise enough to not romp on the car until the coolant gauge is up to. I hope to get both cars running normal temperatures next weekend. My car was built before the invention of coolant reservoirs, so I bought an aftermarket coolant reservoir at the local car parts place for $6. Basically, it’s a thermistor that changes resistance with temperature. I never hit above 206* (sitting in a drive thru fro 10+ minutes, in gear, w/ambient temp @ 100* & zero wind). The coolant is at the proper level, neither low nor high. For the first 100,000 miles, it is necessary to check the coolant level simply to be sure you're not leaking or burning coolant. Above 240 you are nearing the boiling point of your coolant, so start being concerned. However, if your transmission is slipping a lot or you are pulling something heavy, the. A cold engine requires more fuel. The car can set at idle and the water temperature may be fine. Noticed this on my trip, gave more room the guy infront and temperature decreased. I understand the coolant is pressurized and can be higher than 212 degrees F. The temperature of the coolant in the radiator is then reduced by the cold air that rushes through the radiator as the car drives along. Funny how that works. Not as often as your oil does, but still, you will need to change or "flush" the coolant in your car. What do you need to know about car temperature gauge? Paying close attention to your car’s temperature can spare you from unwanted and costly damage. Your car relies on the coolant sensor to tell it if the coolant is getting too hot, and it relays that information to you on the temperature gauge. Car is high perf. Coolant Light Comes On. When I'm DD my car (which is on backroads in a rural area mostly, with some traffic lights in center areas) my coolant temps hover between 186-190 degrees fahrenheit. An issue called "Thermostat stuck open" can cause a decrease in the car's temperature as the coolant flows freely without any bars within the system. I've been trying to figure out what the normal operating temperature is for this car. While inspecting the vehicle when it is hot, it is found to have excessive coolant in the coolant recovery container. However, my temp guage displays just under 215, just over 215, even near 220 (up or down) on the same day in the same driving conditions with the a/c on or off. Coolant temp on that car would not get past 79C so I wanted to compare it with the 00 Jetta which seems to be getting decent mileage. Engines vary. but the engine is cold and its cold outside i have just brought this one from a salvage dealer and the battery was a bit flat is it safe to drive or not _____. If the car overheats, then the superheated coolant will escape through whatever means possible: usually a relief valve built into the radiator lid. is 208*F, so the engine should run in the 192-208*F range. Funny how that works. >> Warning! << Never, ever unscrew the temp sender with the engine running, or start it up with the sender loose in its threads!. That's too cold for a fuel injected car if the temp gauge is accurate. A common cause of car overheating is a low-cost thermostat stuck closed, restricting coolant flow. Changed thermostat to a performance 180 degree. Repeat until you remove all the air from your cooling system. When you add new fluid, the challenge is to get all air out of the system so that the water pump sound is normal again and you have the step in the fluid level. It depends on the engine type as seen on the right corner. The engine control module uses the Engine Coolant Temperature (ECT) sensor to determine whether or not to trigger a OBD-II P0128. Coolant needs to be flushed because it breaks down over the years and then loses the ability to serve its purpose of maintaining optimum temperature of the engine and preventing corrosion. I was just wondering what the normal and safe coolant temperature is. On hot days 90 degrees or hotter my car would go to. That was running down the road 60 mph. As long as the temp stays under 220 and you are not losing coolant you should be ok. The oil temp generally maxes out around 210 give or take a degree or two. The method used to keep a car's engine properly cooled is to fill the car's radiator with a mixture of water and coolant/antifreeze. Normal operating Temperature is from 195F to 235F and then coolant fans should be on. Engineers need to. You can safely operate to 240. Since then have replaced radiator, alternator, spark plugs, & engine (rebuilt @ 62,000). However this should only be done in an extenuating circumstance AND NEVER in a cold climate location. , 1996+) automobile engine, manufactured for sale or use in the US, will fall between 200 and 250 degrees F. An antifreeze mixture is used to achieve freezing-point depression for cold environments. As the outside (ambient) temp rises it's normal for the engine to run a little hotter 200 degrees is safe with coolant, water boils at 212. I've been trying to figure out what the normal operating temperature is for this car. The Fix: Repair or replace the cooling fan. The stock t'stat opening temp. Insufficient Coolant Temperature for Stable Operation. Newer cars are designed to run at a higher temp than the ones of the past. Is the coolant really boiling/hotter than the regular temperature? if the coolant level is fine and the coolant is not boiling and your car is the Pajero/ Shogun NM, then you might have the faulty temp gauge issue, that would be the bast case for you, you can find a quick and cheap fix here, on our site, read how to fix a faulty temp gauge article. To answer your question, yes, it's BAD! for your engine to run cold. The temperature needs to be in that range at all times. It will probably be seriously low. The coolant temperature sensor is fastened to the intake manifold of an engine coolant and is often referred to as a negative temperature coefficient type of sensor. I have a 2014 Wrangler Rubicon. The Fix: Tighten or replace the belts. The engine coolant temperature exceeds approximately 106°C (223°F). I see 205 °F on my 2012 3. Basically, it’s a thermistor that changes resistance with temperature. Not as often as your oil does, but still, you will need to change or "flush" the coolant in your car. We did have to climb over a couple of passes at elevation and the temps increased pretty steadily to 210-212F. The thermostat is either a mechanically control valve or electronically controlled by your engine's computer and opens to allow more coolant to flow through the radiator where it can be cooled. Super hot! The coolant helps keeps the temperature of the engine at a max of 1,700 degree F. The temp gauge will spike into the red. The sensor usually comes with two wires, one with a 5V reference voltage for the PCM and the other for ground signal. If you have the supplies on-hand, consider topping off the radiator with a 50/50 mix of antifreeze and water or a premixed coolant. I'm looking at adding a temperature gauge if the one on the dash cannot do any better. There are 3 main jobs that the antifreeze in coolant performs to keep the engine coolant temperature normal:. Within the correct temperature range – depending on the vehicle, “operating temperature” is usually somewhere between 160 °F and 180 °F – fuel vaporizes efficiently, which enables complete combustion. >> Warning! << Never, ever unscrew the temp sender with the engine running, or start it up with the sender loose in its threads!. Right, the temp does come back up to the typical 48% indication and. K-tuned housing: Hot coolant from the head comes down through the bypass hose and terminates on the radiator-side of the thermostat. 10-60 is a normal oil pressure range. All vehicles are subtly different, as well as operated differently under differing conditions. Actually for any car, it's important to know where we really stand with coolant temperature. The modified signal returns to the ECM as the engine coolant temperature input. Never add coolant to a hot engine!. On the '91 and later Jeep 4. One for the ecm and one for the gauges. ! and I had a leaking old car at the time. with enough oncoming air flow to avoid heat soak through engine bay air stagnation). In your car, antifreeze works to prevent your engine from freezing up or overheating in extreme climates. Started up and drove 2. I usually boil the new one before installation to note that 1. Magnetic gauges. However, if the pressure inside the cooling system is compromised by a leak in the cooling system or a faulty component, such as a blown head gasket, the boiling point of the coolant will fall as the pressure inside the. On the '91 and later Jeep 4. This doesn't leave much room when you consider the normal boiling temperature of water at sea level is 212°F. Restarting at the higher temperature may ruin the engine. With the car parked back in the pit garages directly after racing, with no air going through the radiator, the. The Fix: Refill the coolant to the proper level. Check for obstructions. The normal operating temperature of the coolant in an engine is about 210F to 240F degrees. The coolant temperature sensor, also known as the coolant temperature switch, is an engine management system sensor that is used to monitor the temperature of the engine's coolant. If I really push it, I can get it as high as 207. I thank you in advance for any advice. Also note the step in the fluid level in the inverter coolant reservoir. According to a previous SRT Enginner Q&A thread, it appears 212 is the "optimal" temp. The Engine Control Module ( ECM) monitors the engine coolant temperature with the engine running. The exhaust system takes away much of the heat, but parts of the engine, such as the cylinder walls, pistons, and cylinder head, absorb large amounts of the heat. Those numbers sound nearly the same as my 98' Deville, all is normal. It can get up to 6,000 degrees F. Noticed this on my trip, gave more room the guy infront and temperature decreased. Newer vehicles use long-life radiator coolant that is specially formulated to last up to 150,000 miles or five years in-between changes. Your normal transmission temp will very depending on the ambient temperature where you're driving also.