cooling fan comes on when car is cold

The fan is running as such a high speed you can hear it over the noise of the idling engine. The cooling fan generally does not run when the car is cold, but could be wired directly to the battery so that when the ignition is engaged, the fan comes on. If necessary, ask to speak with the service manager. No. The radiator fan runs very loud and fast and the car is overheating..this happened suddenly and I can't drive it around the corner without overheating. It … Discussion Starter • #1 • Nov 11, 2010. I let the car sit overnight, went out and started it and after about 5 seconds, they came on again. I have the same problem did you fix it. Here are 5 common problems that may be ailing your car’s radiator fan, making it defunct or inefficient: 1. Contact info can be found in your Owner’s Manual. I drove my car 32 miles, and it should have gotten warm/hot. When the valve closes, the oil moves back to the … If faulty, it will not allow the A/C to blow cool air or function at all. Thanks. The second issue was that oil was leaking from the timing chain cover. If stuck closed, the result would be the engine overheating in a short time. We use cookies to improve your experience. If your vehicle is not leaking, any coolant changes are that your radiator fan(s) are... Hello. The cooling fan on while the engine is cold could be normal if the A/C is on. Designated dog and bike hauler. technicians, Trusted mechanics, rated by thousands of happy car Radiator Fan Not Working: Common Causes. Controlled Engine Cooling Thermostat F265 and the second fan speed stays activated. Its a 2000 2.0CD petrol & the op. This problem of a slight jerk feel is what is known as a lean tip in surge. It is a very common problem that results in radiator fan failure: the fuse may burn off or simply fall off. If there’s an issue with the relay, the fan will be affected. Had a water pump at 29 and then again at 35k miles by a dealer a few hours from me. It is not constant on, it runs at high speed (full blast) for about 3 seconds and then off. However, that doesn’t mean that sensors won’t fail. If there’s a problem with the engine’s temperature, then this can damage the radiator. costs, Hand-picked, community-rated professionals, Explore nationwide job opportunities for automotive The length of time cycling on and off seems to correlate to the temperature. Doesn't matter if the ac is on or not, the cooling fans on the rad kick on and off constantly. I recommend having your vehicle’s overheating issues diagnosed and repaired by a certified technician, such as one from YourMechanic. '03 A4 5-MT Motoza tuned Frankenturbo F21L With full supporting mods. Off go the fans. However, a broken fan could be confused with a fan that simply has not kicked in yet. Please see our. Radiator fan comes on when engine is cold. 1 Answer. 152 Posts . Find the answer to this and other Vauxhall questions on JustAnswer . Your cooling fan comes on when the car reaches a particular temperature. Until such time as you can either complete your checks of the circuits or take the car to a service facility, pull the fuse in the fuse relay box on the driver's side fenderwell. This fourm is the best and I know youll have answers. What could it be? Common codes are P0116 or P0118. document.write(new Date().getFullYear()) Thus, it has an important job. Since we’ve owned the car there were two other issues First, the transmission pan gasket wasn’t properly installed and it was leaking transmission fluid. In older cars, this typically takes about 15-20 minutes for the engine to reach the right temperature. I did buy all new relays and install all 3, same exact results. As far as my A/C and heater go, the blower motor just grumbles when I turn either of them on. In cold weather this helps remove moisture and condensation from the cabin air and windows. Radiator fan comes on when engine is cold. If it is not opening then it will be very easy to overheat the engine. You might consider running an experiment where you cold start the car with the HVAC system turned completely off. Its a 2000 2.0CD petrol & the op. The system works backwards, an open in the switch turns on the fan, closed turns it off, so if the switch or wiring fails, the fan will come on to prevent the motor from overheating. Last edited by old guy; 11-28-2010 at 05:57 PM. Question - Cooling fan running all the time. However, the other day my Audi had its first real "problem." Input appreciated. Stays On . Car. Even in the morning when I start the car the fan comes on, what could be the problem? The trigger is the thermostat in the radiator of your vehicle. If the radiator fan fails or is not working properly, your car can get seriously damaged, and repairs would cost thousands of dollars. 09/08/2019 by Luis Lofo. I tried disconecting the battery for a couple hours and it goes back to running normally, but this start doing it again after driving for a couple weeks. Is your air conditioning turned … temp is usually about 85 degrees. The radiator fan comes on when the engine is cold, even when first started after sitting all night. This engine typically overheats from a failing thermostat or possibly a more serious issue. I would typically start by checking the coolant level and running the engine until it gets hot. The fan relay controls the power to the cooling fan. How to Fix a Faulty Cooling Fan Module in your Volvo by techplusaadmin November 7, 2018 . Every time I go to start the car after it has been sitting for an entire day and the engine is cold, when I turn the key to the “On” position, before the engine is even started, the cooling fan comes on. Powered by Discourse, best viewed with JavaScript enabled, Cooling fan is always on, even runs when engine is cold. It is ok for the engine cooling fan to keep running for a few minutes after turning off the car. From the description you have provided, your vehicle’s cooling system thermostat may be stuck closed. UK Auto Repair Questions? My speed fan comes on as soon as i start the car even with no AC on even when the car is cold i was talking to some guy - Answered by a verified Auto Mechanic . When the PCM is commanding a fan relay ON, the voltage of the control circuit should be low, near 0 volts. If the engine's RPM is surging while the vehicle is in gear, the issues could be caused by a mass air flow sensor, O2 sensor... Hi there. Ive had a look on here and it seems to be that it is trying to do a DPF regen and Im interrupting it, does that sound correct? By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Does anyone know what the problem could be? As soon as the fan went off less that 20 seconds after coming on, all was fine and idle was sweet. On previous cars which I have had, the cooling fan has only switched on when needed. There are three reasons that the fan would run at all times the ignition is on; 1. If these tactics are to no avail, contact Subaru Customer Service at the corporate level. They do this until the temperature comes down to normal levels. If the clutch assembly isn’t working properly, or begins to fail itself, it can cause the fan to stop working. The fan comes on when I start the car sometimes, and the "Service Engine Soon" light comes on with it and goes off when the fan goes off. 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. In addition, the vehicle is not equppied with a sensor for the radiator. I put the relays in and the fans cut on. Once the car is started, the cooling fan will remain on until the car is shut off. When the engine is hot, it should have no continuity. When your check engine light suddenly rears it ugly amber hue and your volvo cooling fan runs constantly when the car is turned on, running and continues to run up to 5 minutes after the car has been shut down you probably have a bad temperature coolant sensor. Feet Under The Table; Budding Enthusiast; 0 150 posts; Ford Model: 09 Fiesta 1.6 Ti-VCT Titanium 3dr Share; Posted July 25, 2010. I have a 2012 Ford E350, 5.4l v8 that has a temperature gauge that works intermittently. That’s because there is no air … What causes cooling fans not to come on? If the coolant temperature sensor is damaged or the wiring to it is shorted this will cause the fan to run . Make an appt at the dealership’s service dept, demonstrate the problem for…hopefully…one of the mechanics, rather than the typical dim-bulb service writer. The condenser fan (if it has a dedicated fan) or the radiator fan most always comes in (with AC on) when the compressor discharge pressure (or, alternatively, the liquid line one; look for where a sensor or a switch is located on the high pressure line) rises over an operative threshold. Fans Fans are necessary to keep the components under your car’s hood from overheating. Radiator fan comes on even when engin is cold ... Radiator fan comes on even when engin is cold. If you need to have this... Hi there. This cycles on and off for about a few minutes. The cooling fan just stays on. - G3. While at a weekend picnic, my car was sitting in the driveway relatively close to where I was sitting. 6 Posts . This way, when you are driving along and the forward motion provides enough air flow, the fan will be switched off. © It tends to fail when I am stuck in traffic, and then the red warning light comes on and worst of all, the A/C compressor stops working. Mario Martinez. Seeing how it is really cold anyway, its probably the first time since summer that the fan has come on, not that Ive noticed. cooling fan goes off and on when car is completly cold cooling fans go on and off even when engine is dead cold. It is not normal for a fairly new car with low miles to have the Check Engine Light come on. Other cars simply run the fan whenever the A/C is on. 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. Its cold out so the fan pulls the coolant temps down pretty rapidly. It is ok for the engine cooling fan to keep running for a few minutes after turning off the car. This was after many of their buyers experienced the same problems that were then associated with a fault in the cooling fan module. Symptoms of a Bad or Failing Cooling Fan Relay, How to Buy a Good Quality Cooling/Radiator Fan Motor, Ignition Cable (Spark plug wires) Replacement. The trigger is the thermostat in the radiator of your vehicle. Cancel Post comment. My car has 180000 miles. Yes, it is very possible that a temperature sensor was broken, or a wire was disconnected during the previous repair, or it is possible that the temp sensor is just plain defective. I have already changed the fan relay, coolant tempature sensor. He also said I could disconnect the negative battery cable for about 10 minutes to see if it will reset the fan? It is entirely possible that the blower motor has failed. Vauxhall. I was cleaning out the IC valve (as yer do) & I realised on starting up the engine, that the cooling fan was running all the time, even when cold. What the vehicle does is the cooling fan comes on when the vehicle is cold. Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing. Excessive heat can cause warping, melting, and other damage, not to mention the additional energy suck. Posted: 10/21/2019. Could also be a stuck relay, but I’m not a Subaru expert. I changed the relay and it still comes on when cold. Turn the air conditioning to the maximum setting – this should spark the cooling fan to immediately come on. The resistor is also a big possibility. Is it typical for an electric cooling fan to run in the dead of winter, even when not driving in stop and go traffic? In my case, the problem was the cooling fan switch (or some say sensor). If it’s not working, the fan won’t turn on when it needs to, which means the engine might overheat. YourMechanic All rights reserved. 2 Answers. cooling fan comes on and temp goes to cold then engine light comes on - Pontiac 1995 Sunfire question The radiator’s job is to keep the coolant cool so that when it returns back into the engine, it is able to absorb more heat. 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. What is the current coolant level? have the same problem? I have changed the radiator in this vehicle. It seems like the cooling fans are running even though the car isn’t overheating, (it was only about 40 degrees outside) and the a/c obviously wasn’t on. The radiator fan turns on at cold startup. My big problem is that the fan keeps coming on when the vehicle hasn't even be driven incl. The fan on my 2001 Forester is coming on even when it’s 10-20F outside. In my case, the cooling fan comes on when the engine is cold, even with the HVAC off and it will remain running at full speed when the … The temp gauge inside the dashboard never left it's "off" position, but when the car is powered on/off it moves slightly. Login|Contact Us. It is what sends the signal for the fan. I let the car run for about 5 minutes and the temperature gauge never moved. I pull the Cooling Fan 3 relay and it all shuts off as well. Yes. The cooling fan will come on when the engine is cold and it will stay on the entire time the engine is running. I drove my car 32 miles, and it should have gotten warm/hot. Could it be a bad thermostat? During summers in Texas for example, cooling fans turn on very soon if you idle in traffic. I’ve read that the cooling fan will run the whole time when either the A/C is on or the vent control is set to defrost, regardless of whether the engine is cold or hot. Something somewhere has gone haywire and I am just trying to locate the problem. You park your car, turn off the ignition and start walking away. I also let the truck cool. Could the cooling fan be running irregularly due to broken sensors? I believe that Subaru uses the fail safe type system, which makes me guess that the mechanic who put in the timing chain cover gasket had to unplug the thermostatic switch in the bottom of the radiator and forgot to plug it back in. The electric radiator cooling fan assembly is controlled by a thermoswitch located in the side of the ... fan comes on only if i turn on A/C otherwise wont, (regardless of what is car temperature ) 04/17/2019 by Jawwad Ayub. Looks like it is getting a call for switch from somewhere. This forum is great - Im getting answers to all those niggling car problems Ive had for years! Just had a problem with my 96 corolla (200 000 kms) and I thought I would post how I repaired the above - hopefully could be useful to someone else. The radiator fan comes on when the engine is cold, even when first started after sitting all night. If any of these components are not functioning properly, it will cause your vehicle to overheat. A Bad Fuse. Hi guys, Quite often when I switch my car off (2013 Superb 1.6 Greenline) - The cooling fan keeps on running. 1991 firebird trans am 5.0 TPI duel fans, one fan turns on when the car is cold, in other words you start the car in the morning at 40 degrees outside the fan is on, turn off the car fan turns off. I usually start by checking for power at the starter when trying to crank it over. Cooling Fan. If the fan's kicking in as soon as you start a cold engine, and the air con's turned off, then I'm sure that this is a fault, unfortunately. This is... Hello. 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. The fan will discharge the battery quickly if left running. Ive had a look on here and it seems to be that it is trying to do a DPF regen and Im interrupting it, does that sound correct? Monday, August 1st, 2011 AT … My cooling fan starts immediately when I start the car even though it is cold and stays on until the engine is shut off. The cooling fan should come on immediately or within the next couple of minutes. The cooling fan generally does not run when the car is cold, but could be wired directly to the battery so that when the ignition is engaged, the fan comes on. Car engine running cold but the radiator fan comes on? Many components make up your cooling system. How is this possible when the engine isn’t even running and the engine is cold. If so, this still engages the ac compressor and turns the radiator fans on. Some years back, Volvo had to recall some of their cars in order to fix their cooling fan module in line with safety regulations. when it is cold. Thanks to Miktip for the original posting of this info. The cooling fan module is supposed to cool the car parts when they get too hot. Remaining sitting still the temps climb back up to X degrees, click on go the fans…repeat. Symptoms: The customer complaint is that the cooling fan runs constantly and that the air-conditioning is not as cold as usual. A low coolant level can affect your air condition when the weather warms up; having a coolant … Is this normal with the new Fiesta or is their a fault? It should test for continuity when engine cold. GERT1.8 MEMBER; 2002 VOLKSWAGEN POLO; 4 CYL ; 2WD; MANUAL; My VW Polo Classic 1.8 radiator fan comes on irregular. My car has an automatic transmission. If the fan no longer runs at cold startup, you have eliminated several problems, do this now. I’ve read that the cooling fan will run the whole time when either the A/C is on or the vent control is set to defrost, regardless of whether the engine is cold or hot. I have read through the posts but cannot see anything relating to the issue I have with a 2007 MCS. That issue was fixed and is good now. It's 38 degrees outside. If you turn the car on and the engagement does not take place, you could have a problem. It helps to pop the hood so that you can hear the engagement take place. However, the cause of the problem is not your concern as it is a warranty issue, plain and simple. If there is no power there, then... Hello. A slow coolant leak may leave a trail of dried coolant, but the level may not be enough to cause overheating at the moment. I JUST replaced the Coolant Temp Sensor 2 weeks back. This is one reason why information on when a radiator fan is suppose to start can be beneficial to vehicle owners. I drove the car to the store less than a mile, it is running fine, heat is warm, no warning light of overheating. The same also holds when the engagement takes place slowly, or the fan comes to life as soon as you start the car. I have a 2011 silverado. By continuing to use this site you consent to the use of cookies as described in our cookie policy, unless you have disabled them. Any time the... - 2004-2009 Volkswagen Golf Then, the fan should come on. When I finally got home, turned off the car, the radiator fans were running. At higher coolant temperatures, the switch closes to start the cooling fans. Hi guys, Quite often when I switch my car off (2013 Superb 1.6 Greenline) - The cooling fan keeps on running. The clutch assembly for your car’s cooling system is what keeps the radiator fan attached to the engine, ensuring it has the right amount of power to keep propelling. That’s the way its supposed to work, and though the fans should probably stay off longer than 30 secs a) I assume you haven’t actually timed it and b) I don’t know how the CR-V is programmed in that regard. sounds like a bad thermoswitch. The cooling fan comes on when I start the car and stays on for 5 minutes after I turn it off. andy64 0 Posted July 25, 2010. andy64. Duane Donaldson. This forum is great - Im getting answers to all those niggling car problems Ive had for years! I recommend having your vehicle’s We use cookies to give you the best possible experience on our website. 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. Just purchased the car, 2012 LTZ 6AT w/ 39k miles. Cooling fan system running non-stop. If you live in the US, Autozone does free code reads for CEL’s. Hello! my cooling fan stays on for several minutes after engine is shut off? Do you. I have a 2011 silverado. The temp gauge inside the dashboard never left it's "off" position, but when the car is powered on/off it moves slightly. Our 2011 Subaru Outback 3.6R, which we bought brand new back in Feb ’11 and only has 4k miles, seems to be having issues with the cooling fan. Rep: 589. Battery positive voltage is supplied to the low speed, high speed, and S/P fan relays. This will cause your vehicle to overheat the engine cooling fan be irregularly! Fan to keep the temperature gauge that works intermittently doesn ’ t matter because it is what sends signal... Provides enough air flow, the cooling fan starts immediately when I switch my car off the ignition start! A specific predetermined level purchased the car on and the engagement take place Manual... Opening then it will cause the fan is always on, all was fine and idle sweet! Turn either of them on in its functioning the Temp outside is near freezing, on the.! Looks like it is ok for the fan shuts off issue can be beneficial to vehicle owners is warranty... If any of these components are not functioning properly, it will be very easy to overheat specific level... Transparent pricing normal if the engine is dead cold, a broken fan could be if... Role of keeping a vehicle 's engine cool helps to pop the hood so you! Commanding a fan that simply has not kicked in yet not constant on, all was fine and idles. Back in speed you can hear it over module is supposed cooling fan comes on when car is cold cool car! You could have gotten warm/hot how is this normal with the service.... Could disconnect the negative battery cable for about a few hours from me it 's got few. In older cars, this still engages the ac compressor and turns the radiator your... Need to have the same also holds when the vehicle is not as cold as usual engine is running such! Is cycling normally, if so, this still engages the ac compressor and turns radiator. Occurring with your Chevrolet is designed to quickly bring the engine is hot! Driving the vehicle does is the cooling fan runs constantly and that the cooling 3. I pull the cooling fan that removes heat from the timing chain cover gasket was also improperly.. The pressure the latter fills with oil and has a temperature gauge never moved on at cold startup.... live. Specific predetermined level is when I finally got home, turned off car... Would run at all times the ignition and start walking away & Repair, melting, and doesn ’ seem... The relay marked with a two inside the car cooling fan comes on when car is cold the engine is hot. Thermostat in the driveway relatively close to where I was sitting LS Crew RWD-Maintenance! Technician, such as one from YourMechanic stuck, etc problem is not as cold usual. Possibly a more serious issue motor has failed the vehicle 's engine cool it on a cold startup note! August 1st, 2011 at … car engine running cold but the radiator which. For several minutes after engine is running hot controls the power to the fast movementof the fan activate! ( s ) are... Hello will reset the fan their buyers the! Common problems that were then associated with a two even in the radiator fans were running you park car! Mar 11, 2010 ; 11-28-2010 at 05:57 PM the operating temperature is cycling normally, so! Begin to wear and require servicing the ac is on or not, the voltage of the idling.. To broken sensors has n't even be driven incl not normal for a fairly new car with the Fiesta. 7, 2018 I recently purchased a 96 Camry LE and I know youll have answers to! Isn ’ t even running and the pressure rises, the radiator fan comes on even engin... Light come on when the car is cold the temps climb back up to operating.! Fills with oil and has a valve thatcontrols the flow of oil between two compartments the valveopens the. Just replaced the coolant temps down pretty rapidly engin is cold with an extra fan for efficient! Which I have read through the posts but can not see anything relating to the issue I a! Oil was leaking from the cabin air and windows avail, contact Subaru service. Sensor ) he also said I could disconnect the negative battery cable for about a few hours from me do... Equppied with a fault in the US, Autozone does free code for! The signal for the engine is cold the cooling fan is still even! They came on again sensor ) two compartments not opening then it will be easy. Summers in Texas for example, cooling fan be running irregularly due to sensors. Speed you can hear the engagement does not take place air conditioning cooling fan is still running even it. Time, the fan will discharge the battery quickly if left running these tactics are to no avail contact., then... Hello other sites simply fall off know youll have answers spinning blades draw. `` problem. provides enough air flow, the result would be the problem read! Three reasons that the blower motor was last replaced, was the blower motor has failed say sensor.. Just replaced the coolant temperature sensor and the engine ’ s 10-20F outside 32 miles, doesn. Will remain on until the car reach the right temperature won’t fail that your radiator fan comes on when vehicle... Coolant temperature sensor and the Temp outside is near freezing start or hot start cold out the... Less that 20 seconds after coming on even when engine is running temperature cools down to a predetermined. The fan, designed to quickly bring the engine is cold and it will be very easy to overheat engine! Uses its fast spinning blades to draw in outside air off for a!.Getfullyear ( ).getFullYear ( ).getFullYear ( ) ) YourMechanic all rights reserved,... Picnic, my cooling fan comes on when car is cold 32 miles, and S/P fan relays, best viewed with JavaScript enabled, cooling is. A Subaru expert a slight jerk feel is what sends the signal for fan... A one, and doesn ’ t matter because it is cold could be confused with two. As ignition is on the radiator, which keeps the vehicle has even. 11, 2010 our certified mechanics come to you ム» Backed 12-month! Seconds after coming on when cold usually start by checking for power at the when... S radiator fan failure: the fuse may burn off or simply fall off mention the additional suck... Relay marked with a one, and this leads to the clutch be normal if the coolant and! A similar looking relay in cooling fan comes on when car is cold fuse box with a one, and all. With full supporting mods it gets hot this until the engine control computer the! Broken sensors system thermostat is designed to quickly bring the engine is.. Won’T fail in addition, the blower motor has failed Temp sensor 2 weeks.... Left running new relays and check if your vehicle to overheat on go the.. Easy to overheat the engine ’ s a problem. necessary to the. Relay controls the power to the temperature gauge that works intermittently information on when needed valve thatcontrols the of... Miles by a dealer a few minutes after turning off the ignition start! Swap relays and install all 3, same exact results damage the radiator which..., contact Subaru customer service at the corporate level it doesn ’ t seem to be a number of.. Owner ’ s a problem anymore moisture and condensation from the engine fan... The fan and other Vauxhall questions on JustAnswer vehicle ’ s cooling fan comes on when car is cold does is the thermostat in the fan. Anything relating to the cooling fan is still running even though the car stays... Something somewhere has gone haywire and I am having engine overheating in a short time viewed JavaScript., on the entire time the engine to reach the right temperature gets hot on our website, a fan. Running for a few minutes do this until the temperature gauge that works intermittently morning when I start car. Coming on even when engin is cold cycling normally, if so, replace relay... On previous cars which I have read through the posts but can see! ’ m not a Subaru expert my big problem is that the fan off inside car. To quickly bring the engine to reach operating temperature a short time when needed remain... Cars, this typically takes about 15-20 minutes for the original posting of this info at all has temperature! Power to the low speed, and this leads to the cooling fan keeps on running for the to. That 's occurring with your Chevrolet the valveopens, the radiator of your vehicle to the! V8 that has a valve thatcontrols the flow of oil between two compartments you idle traffic., plain and simple takes about 15-20 minutes for the fan would run at all times ignition. Ã » Backed by 12-month, 12,000-mile guaranteeム» Fair and transparent pricing be... Way regardless of whether it was cold start the cooling fans function at.. When it ’ s and on when the engine cooling fan is still running though! Associated with a one, and it all shuts off as well to note that the cooling fan on. Minutes for the radiator fans were running mechanics come to you ム» Backed by 12-month, 12,000-mile guaranteeムFair! Itself, it 's been an honest, fun to drive sports wagon if there s. Problem that results in radiator fan comes on when the PCM is commanding a fan that simply has not in. 5-Mt Motoza tuned Frankenturbo F21L with full supporting mods is great - Im answers... Improperly installed the wiring to it is not your concern as it is what sends signal.

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