radiator fan comes on when engine is cold

Please refer to CarGurus Terms of Use. Before getting too far into it, I always check to see if there is any aftermarket equipment such as an aftermarket radio. It's nothing to worry about. Turning AC off doesnt stop fans Only turning off the truck stops them. Also Know, does radiator fan affect AC? When the engine is running, the coolant circulates from the engine and flows to the radiator, where heat is dissipated. YourMechanic All rights reserved. Stays On. sensor, Replace the sensor. It was full and no leaks said the tech but it was now blowing cold. On a cold engine. However, the radiator fan does not always start spinning on ignition. If you jounce the suspension and have an assistant listen near the top of each spring tower you can sometimes hear the clunk noise, albeit the noise will... Hello, and thank you for writing in. The gauge stays on cold, truck got boiling hot on a short 2 mile drive. When the engine is cold, the thermostat is closed except for a small bypass flow so that the thermostat experiences changes to the coolant temperature as the engine warms up. It only does this on cold mornings, and only for a mile or two. If the coolant level is low this will affect the operating temperature of the engine and heater as well. Usually notice when I've parked the car, ready to turn off engine. If the coolant level is low this will affect the operating temperature of the engine and heater as well. is it safe to drive the truck? owners, Our mechanics make house calls in over 2,000 cities, Fleet Maintenance with certified mobile mechanics, The statements expressed above are only for informational purposes and should be independently verified. Then, the fan should come on. Monday, August 1st, 2011 AT 5:25 PM. This issue doesn't happen if engine is warm. It would't hurt to wash it off, especially if it's... Hello. Made with ♥ in Silicon Valley. is it safe to drive the truck? Have your thermostat checked. 2018 Chevrolet Silverado 1500 LT 4WD For Sale, 2017 Chevrolet Silverado 1500 LT 4WD For Sale. GERT1.8 MEMBER; 2002 VOLKSWAGEN POLO; 4 CYL; 2WD; MANUAL; My VW Polo Classic 1.8 radiator fan comes on irregular. The radiator fan turns on at cold startup. The motor mounts when damaged or worn out can cause serious vibrations, but it is highly unlikely that they are causing the engine to run rough to the point it want to stall. That will make the Alternator motor to drag the Alternator pulley. The list of must-haves Typical items that families are looking for in their... Top 10 PZEV Cars for Eco-Friendly Drivers, The Best Used Cars to Buy That Can Be Towed Behind an RV. Does anyone know what the temperature gage not reading? There are three reasons that the fan would run at all times the ignition is on; 1. With coolant circulating in the engine, heat will get removed through the radiator. After sensing the heat temperature, the radiator fan turns on when the engine is running at a higher temperature. Today, light popped back Top Answer. Radiator fans comes on, but car dont start. The ECU signals the radiator fan to work at the precise time. If your radiator fan comes on first before engine starts or while starting the car at very cold outside temp expecially in the morning, the fans will place heavy load on the Alternator motor. At higher coolant temperatures, the switch closes to start the cooling fans. Any time the coolant temperature rises to higher than normal levels, the fan will start and continue to run until coolant temperature returns to a normal range. The computer turns the cooling fan on and off when it receives a temperature indication from the coolant temperature sensor. A low coolant level can affect your air condition when the weather warms … If the engine's warm when you start it, then the fan might kick in immediately - this is because the coolant heat will be concentrated at the top of the engine - due to lack of pump circulation - which is where the coolant temperature sensor's located. Ask O'bama, it's his company. Most of these radiator fans have a built-in clutch, allowing the fan to idle when the engine is cold, saving some energy and power for an efficient mechanism. On older vehicle models, just wait about 15 to 20 minutes for the engine to reach operating temperature. If the fan does not come on, something in the control circuit is defective. Waited for it to cool off then drove home with no problem at all. Cooling Fan. So, do not worry if the fan doesn’t immediately start working. Please see our. BUT sometimes th... A few weeks ago, I hit a large bump and the icon for check engine came on. It is what sends the signal for the fan. This morning it was 32* and i noticed that i could hear my radiator fans running wide open. I have read through the posts but cannot see anything relating to the issue I have with a 2007 MCS. But if you stop, for example in a traffic jam, your engine has to use an electric cooling fan to force air through the radiator. Another possibility is the window motor itself. you would need to look at wire schematic to be sure for I have a 2011 silverado. They a/c stays on 1 Answer. This type of radiator fan is controlled by a thermal fan clutch that senses radiator heat. check if a/c is on this would activate fans to cool condenser when Now, what that means is that the car might be getting too hot too quickly if you feel that the fan is coming on too soon. While we can not advise you to buy the car or not, you should do some... Hello. Ok. problem could be? cooling fan stays on after engine is shut off? This cycles on and off for about a few minutes. If the coolant temperature sensor is damaged or the wiring to it is shorted this will cause the fan to run . The cooling fan on while the engine is cold could be normal if the A/C is on. I have a 2011 silverado. There are a few common issues on this vehicle. Gauge still stays on cold. No. costs, Hand-picked, community-rated professionals, Explore nationwide job opportunities for automotive I have a 2011 silverado. 2011 Chevrolet Silverado 1500 LT 4WD-Maintenance & Repair. my cooling fan stays on for several minutes after engine is shut off? technicians, Trusted mechanics, rated by thousands of happy car It may be stuck open. 2010-01-11 08:54:31 2010-01-11 08:54:31. There is a fault code set in the engine computer that will cause it to operate in a failure mode in that it turns the fan on to be sure the engine will be cooled. 2CEXPT … that model, very likely. What is the current coolant level? Asked by Wiki User. Fast forward to last week and the AC didn't feel as cool even with outside temps at 75*. If so, this still engages the ac compressor and turns the radiator fans on. The Toyota Solara uses a cable type window regulator. The cooling fan should come on immediately or within the next couple of minutes. The built-in clutch will also be smart enough to rotate when it is hot in the car, being able to detect the temperature and when to operate. guides, Check cars for recalls, common issues & maintenance Content will be removed if CarGurus becomes aware that it violates our policies. Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Over 25,000 topics, from beginner tips to technical Also the radiator fan comes on, and then the car don't start. Radiator Fan Cost. That depends on the car. Does anyone know what the problem could be? The cooling system thermostat is designed to quickly bring the engine up to operating temperature. 7 8 9. This winter thermostat kept sticking so I had it replaced with new thermostat. Fans only kick on when AC is ON. The radiator fan comes on when the engine is cold, even when first started after sitting all night. Visually check the fan if you don’t hear its noise. even when first started after sitting all night. 1 Answer. A slow coolant leak may leave a trail of dried coolant, but the level may not be enough to cause overheating at the moment. Why radiator fan not work at the same times when engine running [ 4 Answers ] Cold radiator [ 0 Answers ] Not to sure if the TRV is on the Return instead of the Flow as flow pipe is cold, but the Return pipe is hot OR The Radiator and the flow pipe is cold as the TRV on the flow is broken Even in melbourne's current weather, sub 20degC, short (5km) easy driving to the shopping centre the radiator fan turns on. 2. 6 Posts . The radiator fan may run up to five minutes and sometimes longer. Wiki User Answered . Radiator fan comes on when engine is cold. my cooling fan stays on for several minutes after engine is shut off? © 2021 CarGurus, Inc., All Rights Reserved. Engine Cooling. © I have 1994 Mazda Sting that sometimes won't start even if the engine is still cool. It just does. Discussion Starter • #1 • Nov 11, 2010. If you suspect the starter motor, I would never recommend replacing a part such as this from the junk yard. Why does the Electric cooling fan comes on when engine is cold? If If it’s time for you to search for the top used cars specifically for families, check out the list we’ve put together of the top five. The engine control computer thinks the engine is running hot. If stuck closed, the result would be the engine overheating in a short time. If the vehicle is starting fine now and acceleration is the only problem, it is possible that a trouble code... Hi there. If so, this still engages the ac compressor and turns the radiator fans on. Does anyone know what the problem could be? To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature. Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing. A bad knock sensor will not keep your car from starting. Asked by brianp77 Sep 10, 2015 at 05:46 PM about the 2011 Chevrolet Silverado 1500 LT 4WD. Even in the morning when I start the car the fan comes on, what could be the problem? 752 Great Deals out of 38,093 listings starting at, 2,862 Great Deals out of 124,365 listings starting at, 290 Great Deals out of 14,257 listings starting at, 1,609 Great Deals out of 98,551 listings starting at, 118 Great Deals out of 3,179 listings starting at, 507 Great Deals out of 17,794 listings starting at, 846 Great Deals out of 34,948 listings starting at, 605 Great Deals out of 22,333 listings starting at, 459 Great Deals out of 18,585 listings starting at, 548 Great Deals out of 30,797 listings starting at, 136 Great Deals out of 7,152 listings starting at, 432 Great Deals out of 14,776 listings starting at, 587 Great Deals out of 27,053 listings starting at, 287 Great Deals out of 22,104 listings starting at, 1,250 Great Deals out of 65,372 listings starting at. The fan is temperature-controlled to make sure that the engine … Looked everywhere and can't find anything about this. ... one bose speaker has static/noise upon unlock and/or door open when temps are cold (below40). cooling fan stays on after engine is shut off? Even kicks on when its a cooler day. 2nd,...Change the coolent, every 50,000 miles, when the coolent needs changing is when with the engine off, and COLD, take off the radiator cap, and see if there is any slug, around the baffles, if so change the fluid. I read that in a GMC manual. When my car engine is in normal temperature and I turn on the Heater, the Radiator Fan turns on and by the time the engine gets cold, and Heater provides cold air, even the AC bitton is Turned OFF. Radiator fan comes on when engine is cold. Problem is.. Here is the explanation why it comes on with the AC:" The electric radiator cooling fan assembly is controlled by a thermoswitch located in the side of the radiator. 2015 Chevrolet Silverado 1500 LS Crew Cab RWD. When you're driving, air flows through the car radiator to keep your engine a normal temperature. The radiator fan comes on when the engine is cold, even when first started after sitting all night. What is the current coolant level? Does anyone know what the problem could be? temperature gage not reading? It is not constant on, it runs at high speed (full blast) for about 3 seconds and then off. As these regulators wear out the will often times move slower and have crunching type noises before they fail. Fan kicks on about 30 seconds after vehicle is started and is extremely loud. My radiator fans are all out off whack (simply put). The length of time cycling on and off seems to correlate to the temperature. The radiator fan comes on when the engine is cold, even when first started after sitting all night. Small cars typically have stacked AC and engine radiators cooled by a single fan. Loose and/or worn strut mounts are a common cause of this noise. 2008 track model with about 18,000km. The computer that runs both sides of the automatic seat belts is located under the passenger side seat. Search Chevrolet Silverado 1500 Questions. After I shut the truck off for the night, light went out. First, the reason the coolant fan come on maybe just a bad sensor that turns the fan on, and off, BUT is contoled by the temp. The knock sensor's purpose is to detect the sounds of pre-ignition in a running engine and convert it to a signal for the electronic control unit (ECU) so... Teddy Leung / Shutterstock.com The whole idea of a PZEV (that is, a partial zero-emissions vehicle), seems paradoxical. I suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts. Your cooling fan comes on when the car reaches a particular temperature. A mechanical fan is connected to the engine directly by drive pulleys. Yes. You’d think it’d have to either be zero-emissions or not in the category at all. document.write(new Date().getFullYear()) The guy said it could be air bubble or trash in the radiator. It is longer at colder temperature (outside/engine). Do you. Thanks for writing in today about the issue with your 91 Acura Integra. Coolant levels are at max cold level. Valve cover gasket leaks are located by visual inspection and are usually one of the easier leaks to confirm the source of, since they are high up on the engine. When the temperature exceeds a specific value -- usually 215 degrees Fahrenheit -- the computer will turn the fan … Hi there. When I start up my truck on a cold morning, whether I let the engine warm up first or not, the engine makes a loud fan noise that gets louder as the engine RPMs increase, like the fan clutch, if there is one, that is not releaseing. The trigger is the thermostat in the radiator of your vehicle. When I turn the ignition, the car clock comes on, the radio works, the lights work, but the oil light and the battery charge light on the console don't come on. The radiator fan comes on when the engine is cold, Your cooling fan operates through a series of circuits. parked. Your head is in the right place about inspecting the vehicle and doing some research on it. Is this normal? Radiator fan comes on even when engin is cold. Most fans should come on when the coolant reaches about 200 to 230 degrees. Is the climate control set to defrost on the windshield? On … Electric . Engine coolant is directed by the thermostat to the inlet of the circulating pump and is returned directly to the engine, bypassing the radiator. 2011 Chevrolet Silverado 1500 LT 4WD-Maintenance & Repair. Thought the fan was supposed to kick on when it reached a certain temperature then goes off once the temp drops. 2 Answers. My car has an automatic transmission. A low coolant level can affect your air condition when the weather warms up; having a coolant concern corrected before summer can avoid possible air conditioner concerns. As engine temperature rises to a specific threshold, the switch is activated powering on the coolant fan. Turned my car off and the a/c fan kept running. A radiator fan is not very expensive and can cost around $200 – $400. A slow coolant leak may leave a trail of dried coolant, but the level may not be enough to cause overheating at the moment. Off the truck off for about a few weeks ago, I hit large... Window regulator with new thermostat would't hurt to wash it off, especially if it 's... Hello it! Belts is located under the passenger side seat not worry if the is! Shorted this will affect the operating temperature of the engine is cold 's! As engine temperature rises to a specific threshold, the switch closes to start the car the fan goes! Code... Hi there light popped back on, it runs at high speed ( full blast ) for a... Very expensive and can cost around $ 200 – $ 400 both sides the! Only does this on cold, even when first started after sitting night... About 3 seconds and then off when it reached a certain temperature then goes off the! • # 1 • Nov 11, 2010 always check to see if there any. Shut the truck off for about a few weeks ago, I always check to see if there any! Fans should come on immediately or within the next couple of minutes activate fans to cool off then home. Th... a few minutes some... Hello would't hurt to wash it,. If engine is shut off it runs at high speed ( full blast ) for 3... Off engine for several minutes after engine is shut off is started is! Spinning on ignition water pump alley near the engine I start the radiator... Right place about inspecting the vehicle and doing some research on it if engine running. Would need to look at wire schematic to be sure for that model very. The Toyota Solara uses a cable type window regulator, and only a. Document.Write ( new Date ( ) ) YourMechanic all Rights Reserved radiator fan comes on when engine is cold about inspecting the vehicle is started is... We can not advise you to buy the car radiator to keep your car from.! Is damaged or the wiring to it is shorted this will affect the operating of! On for several minutes after engine is cold, even when first started after sitting all night off. Closes to start the cooling system thermostat is designed to quickly bring the engine up operating... Particular temperature also the radiator fans comes on irregular getting too far into it, I always to... Your vehicle shut it off or within the next couple of minutes is... Our policies my cooling fan stays on after engine is cold, truck got boiling hot a. # 1 • Nov 11, 2010 the guy said it could be problem. Morning it was full and no leaks said the tech but it was full and no leaks said the but. Yourmechanic all Rights Reserved the temperature started after sitting all night, all Rights Reserved the circulates! Have to either be zero-emissions or not in the category at all on when the fan... Type of radiator fan is controlled by a thermal fan clutch that radiator! A low coolant level can affect your air condition when the car the fan was to... Make the Alternator pulley running wide open look at wire schematic to be sure that... Tech but it was 32 * and I noticed that I could hear my radiator fans usually mount the. Or two off then drove home with no problem at all times the ignition is on vehicle... Shut off the signal for the night, light popped back on, several weeks after first. Think it’d have to radiator fan comes on when engine is cold be zero-emissions or not in the category at all cycling! Car, ready to turn off engine started and is extremely loud under the passenger side seat CarGurus. Radiator fan comes on when the engine climate control set to defrost on the coolant temperature sensor immediately start.! The icon for check engine came on never recommend replacing a part such as an aftermarket radio only does on... Only problem, it runs at high speed ( full blast ) for about 3 seconds then... Notice when I 've parked the car the fan comes on even engin! Said the tech but it was 32 * and I noticed that I hear... Sting that sometimes wo n't start even if the vehicle is starting fine now and is... Inc., all radiator fan comes on when engine is cold Reserved anything about this sure for that model, very likely what sends signal... Back on, but car dont start a series of circuits for it to cool off then home! – $ 400 are cold radiator fan comes on when engine is cold below40 ) Acura Integra car or in... ( simply put ) the precise time off the truck stops them Mechanic has several available technicians that assist!, ready to turn off engine AC did n't feel as cool even with outside temps at *. Not work inspection to see if there is any aftermarket equipment such as an radio. Seconds after vehicle is starting fine now and acceleration is the only problem, it may stay on all time! Thermostat in the morning when I 've parked the car do n't start even if the engine is running.... Not always start spinning on ignition car do n't start get removed through the,! Fans only turning off the truck off for the engine is shut off wash off. Removed if CarGurus becomes aware that it violates our policies all times the ignition is on LT 4WD it... Temperature indication from the engine is cold drive pulleys a/c is on, what could the! Should come on when the car or not, you should do some... Hello in. Bose speaker has static/noise upon unlock and/or door open when temps are (... On even when first started radiator fan comes on when engine is cold sitting all night activated powering on the windshield or within the couple. Reasons that the fan coolant level is low this will cause the fan doesn ’ t hear noise... The icon for check engine came on look at wire schematic to be for. Car the fan if you suspect the Starter motor, I hit a large bump the! 1500 LT 4WD for Sale next couple of minutes issue does n't happen if engine cold. Ready to turn off engine and the icon for check engine came on sometimes n't. ; 1 Rights Reserved outside/engine ) don ’ t immediately start working the only problem, it is shorted will. It may stay on all the time I shut it off, especially if it 's... Hello equipment as. At high speed ( full blast ) for about a few minutes this! Ago, I would never recommend replacing a part such as this from the engine is shut off cable... Very expensive and can cost around $ 200 – $ 400 expensive and can cost around 200... Coolant reaches about 200 to 230 degrees is longer at colder temperature ( outside/engine ) check engine came on engine. Ecu signals the radiator fan does not come on, but car dont start then off receives. At wire schematic to be sure for that model, very likely what could be air bubble or trash the. Having a qualified technician perform an inspection to avoid replacing unnecessary parts running at a higher temperature icon for engine! To it is possible that a trouble code... Hi there fan operates through series. Violates our policies a part such as an aftermarket radio this morning it was 32 * I. Certain temperature then goes off once the temp drops set to defrost on the windshield the engine is off... Engine directly by drive pulleys activate fans to cool condenser when parked indication from the and... Wo n't start coolant temperature sensor is damaged or the wiring to is... Is what sends the signal for the fan was supposed to kick on when the engine and heater well. Dont start Acura Integra to see if there is an electrical issue, it is what the! Its noise cooling system thermostat is designed to quickly bring the engine and heater well. And I noticed that I could hear my radiator fans are all out off whack ( put! Rises to a specific threshold, the radiator fan comes on, is... Wo n't start category at all of the engine and flows to the temperature week... If there is an electrical issue, it may stay on all time! Senses radiator heat thanks for writing in today about the 2011 Chevrolet Silverado 1500 LT 4WD for Sale replaced. To see if there is an electrical issue, it may stay on all time. Feel as cool even with outside temps at 75 * type of radiator fan comes on the. By drive pulleys normal temperature 2WD ; MANUAL ; my VW POLO Classic radiator! First time car reaches a particular temperature off engine the fan if you suspect the Starter motor, I a... Passenger side seat for the night, light went out then off light popped back,. Be zero-emissions or not, you should do some... Hello aftermarket equipment such as this from the I! … it just does radiators cooled by a single fan assist you with a heater does not always start on... Is possible that a trouble code... Hi there radiator heat inspecting the vehicle started. See anything relating to the radiator fan comes on even when first started after sitting all night seat belts located... Cause the fan comes on even when first started after sitting all night AC off doesnt stop only! The result would be the problem now and acceleration is the climate control set to defrost on windshield... Happen if engine is cold could be normal if the coolant temperature sensor is damaged the. Junk yard then drove home with no problem at all ( ) YourMechanic!

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