A/C has been blowing cool and hot intermittently, so I decided to add 1/2 can of R134a, for lack of a better idea. After doing some research, I have done the following. I would check the relay but don't have something to check it with (asking a buddy and will check it as soon as possible). The fan turns off only when the ignition Yes the fuses are good on top of the battery and the one on the side driver door I have test the fans . The A/C condenser (the part which sits in front of the coolant radiator) is a heat exchanger. Cooling fan only works when ac is on - 2002 Ford Mustang. Perhaps one does not work or perhaps sensor is bad. The rad fan only comes on when the engine gets hot, and it works well to keep the engine temps down. The ECU signals the radiator fan to work at the precise time. When it's hot it only blows hot air. Ford Fiesta Radiator Fan Not Working Causes Thank you for your patience. Frankie Renteria, MrJimPhelps Without A/C on fan motor refuses to come on. It only works at night or morning usually when it's cool outside. If the radiator fan is not working, it’s a serious problem. radiator fan on my 1994 toyota camry Only when my A/C is on the radiator works other then that it doesn't work. On some vehicles, for example, only the condenser fan operates with the air conditioner, while only the radiator fan operates based on engine temperature. It has a sensor that detects the pressure that is being built up. My car started overheating on about ten hours into a fifteen hour trip. 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. Want Answer 0. A/C works only when radiator fan is on [V70-XC70][1998] posted by KlausC on Tue Jul 21 11:18 CST 2009 > V << < > >> Users marked in green are currently online. The head gaskets will fail and leak compression into the cooling system. Posted by Anonymous on Nov 06, 2009. System has freon in it. Radiator fan only comes on... Radiator fan only comes on when Ac is on. With A/C systems, it is important to know in what order things turn on and off. When the radiator fan is off, they are allowed to free open, so that the radiator has air flow across the width of the core. HOWEVER, the radiator fan does not turn on with the compressor. Found Two Sensors On The Manifold One For The Gauge Its Fine... How Do You Get Air Out Of The Cooling System? what - Toyota 1994 Camry question We replaced the coolant temperature sensor, and it still only works with the AC on. The A/C fan will stay on but on cars with electric fans, the fan might turn off momentraily while the car is cool. I would look for an initial, "low temp" sensor that is defective. 220 and above. Then when you turn the A/C on, the temperature goes up even higher, which triggers the next sensor. Out of all that I have read on internet about the problem I am having with this car and the days I have spent working on it I just found this information on my tablet. When I showed this to that electrician, he said "Its normal. The cooling fan may never come on, depending how hot the engine is. When the switch is unplugged the ground will go away and the relay will close, (normally closed relay), (normally closed switch). I got a 2002 Jetta the cooling fans don't turn on . If air isn't flowing over it, it won't exchange the heat it needs get rid of so the A/C core inside the vehicle can become cold and make you comfortable. I checked the radiator fan by turn the a/c on and max the fans out the radiator fans will not turn on. More specifically, the radiator fan is no longer working. . They are the experts on all these kind of problems. I have checked the relay and it's good. This used to not happen before. A coolant fan switch is a small and very simple switch comprised of typically two wires. You can also put direct power by pulling the fan plugs and putting on power and ground to them. The only other thing I can think of is for the passenger side fan, perhaps the A-11x fan relay (engine fusebox, bottom row, 3rd from right) which controls medium speed, doesn't work. i know the fan itself is good because when i connect it to the ac connector it fires right up as well as connecting it straight to the battery. Thank you for your time and knowledge and willingness to share both. If the fan didn't come on, you'd still be warm inside. The Radiator Fan and Condenser Fan are in series (? Jawwad Ayub. Is there a way to fool the sensor to believe it is 212 degrees? HOWEVER, the radiator fan does not turn on with the compressor. Does the temperature sensor feed both the cluster gauge and the fan on my car? I'm aware that the AC won't cool as well when idling or at low speeds - compressor turns slower and less airflow over the condenser, etc.. That's why I thought this fan ran when the AC was on. The fan only runs when the furnace tells it to. Multiple relays and resistor packs may be used to control fan activation. When the AC is off the fan does not turn on. it is just me or the smell ive been smelling something wrong? Have you checked the fuses in the black box on top of the battery. In North America, Volkswagen brought back the Rabbit nameplate when it introduced the vehicle in 2006. herzlich yossi I'm in need of some assistance. Symptoms Of A Bad Or Failing Ac Condenser Fan Yourmechanic Advice. The Toyota's fan only turns on when the coolant reaches a certain temperature, which is measured by a sensor. Kindest regards, respectfully, Mikey. They are designed to only run when needed. On vehicles with air conditioning, rising refrigerant pressures will also activate the cooling fans. It does not run when manually spun if the AC is off. With A/C running radiator fan comes on. In order for the AC Condensor to do its job it must stay as cool as it can. Is there any diffrent sensor for the radiator other then the cooling engine sensor? 08/17/2020 by Many people confuse pressure in the … I have a 1998 Chevy Cavalier and the radiator fan does not turn on when the engine heats up. My 2013 Hyundai i10 has one fan and as far as I can see one coolant temp sensor. If it isn’t, it is probably the fan temp switch that is faulty. And when you pull the CTS, the ECU turns the When I disconnected the coolant temp sensor and started the engine, the fan came on immediately, and at high speed. My car has 234565 miles. It is for the fan module. I bit the bullet and ran the temperature up to 205 when the fan came on. the radiator fan doesn't work unless the AC is on. I think the fan motor has two speeds. I took it to the mechanic and he said it was the compressor that was bad. Using a multimeter, set to ohms, … I don't know which one is the radiator fand and which one is the condenser fan since I can't find the condenser. They are designed to only run when needed. Rich Norman. A/C works only when radiator fan is on V70-XC70 1998 : posted by volvocrazed on Mon Jul 20 09:51 CST 2009 Author: [IGNORE ALL POSTS] last visit: Thu Jul 28 18:15 CST 2011 Hi - 1998 V70R AWD. They don't usually turn on until it hits 210 to 230 farenheit depending on the car manufacturer and model. Just trying to be certain all is well as I had begun this journey by first replacing the VCRM module which had failed. maybe a sensor or switch is broken some place!? Can anyone help me. Those steel like fuses. Anyway when I turn on the AC, only the one on the passenger side starts. I have replaced the t-stat, cooling fan switch which is in the top of the t-stat housing, and found the radiator cap was broken, I also replaced that. Checked the fuses, under the hood as well as the ones inside the van, on the wall in the drivers area. Please help Radiator electric fan has a trigger, apart from A/C compressor switch. my radiator fan works perfectly but ONLY if i have the AC turned on. When the Radiator fan is running, they suck in to close the Shroud off and only allow air to pull from infront or from the grille. Cooling fan problems can be hard to diagnose, depending on your vehicle model and the type of failure. my 2013 Nissan altima smells as though it is running hot but my gauge is fine. it wont turn on by itself when the engine reaches a certain temp. If your Elantra is running hot, and the fan is not running we’ve laid out the most common causes of this issue below. I've never seen it come on when the a/c is off but that doesn't mean it doesn't. My car has an automatic Hello all! But it's not getting hot enough to turn on the fans. If the radiator fan is not working, it’s a serious problem. The one in the car will only come on when it is manualy turned on. Radiator fan not working 2000 tl troubleshoot electric cooling fan test the radiator fan motor radiator fan not working fans 5 reasons why your radiator fan is not . I checked the radiator fan by turn the a/c on and max the fans out the radiator fans will not turn on. The fan runs continuously (longer than 1 hr) after removing the key on a cold engine. I have a 2002 Honda Accord. This switch is configured to work based upon the temperature … As for the engine coolant temp sensor, if the coolant is not hot enough to make the fan come on, then there is no need for the fan yet and there is no problem. I can turn the unit off inside the car with engine running, but this doesn’t turn the fans off at the motor, both fan are running at this time. @emmarea76 it's not overheating and sounds like it's working perfectly. @mrjimphelps. If you have 2 fans (some only have one) the a/c fan should come on as soon as you turn the a/c and the ignition on. Check/replace the Engine Coolant Temperature (ECT) Switch, not the ECT Sensor. Unable to locate the temp sensor located on the block, The other will cycle as engine temps rise and fall. In a nutshell: The radiator fan comes on so the A/C works at its highest efficiency. When I showed this to that electrician, he said "Its normal. We have replace both the fan relays, and the temp switch. I took it to the mechanic and he said it was the compressor that was bad. Could still be in the wiring? Still not working I have switched around the relays, both in the fuse box under the hood, as well as the ones attached to the radiator. If the radiator fan is not working, it’s a serious problem. Without AC on at what temperature should the fan come on? I first noticed the problem when my a/c wouldn't work when in traffic. To test the ECT Switch, remove the electrical connector. When I turn my defroster on, same thing happens. The only other thing I can think of is for the passenger side fan, perhaps the A-11x fan relay (engine fusebox, bottom row, 3rd from right) which controls medium speed, doesn't work. Q: Coolant fans not running when ac is turned on. sounds like a bad thermoswitch. Both the radiator fan and the condenser fan motor should run simultaneously. it is just what I have been looking for, I could not get a straight answer anyplace until I found this. I have the exact same problem. by Saum Hadi Posted on February 8, 2020. From your description, it sounds as though the compressor clutch is only engaging for a short period of time. 40 people found this helpful. Sometime it might be that your radiator is not bad, but it could have been clogged which makes your car overheats as you on the AC when you are driving slowly or while on a stationary position. Still the problem persists. It only works at night or morning usually when it's cool outside. Turning on the AC automatically turns on the radiator fans, hot or not hot. The fan does come on when AC is on and the fan comes on when the wire to the sensor is removed as a default and the sensor is fine as I checked it with ohmmeter at different temperatures. If the fan does not come on, at what temperature past 212 does the engine get damaged? The first thing I did was jump the cooling fan switch with a paper clip with no a/c on and the radiator fan came on. And when you pull the CTS, the ECU turns the fan on using the other relay (A-13x, which is 5th from right). All is good and working. @oldturkey03, @fusebox. Hi, My 05 Colorado fan only works on high (#4) 1, 2 and 3 nothing blows, turn it to 4 and it blows hard like it is supposed to. Bought a new temperature sensor from eBay. I wish I could have found it days ago . I have changed the thermostat, temperature sensor and radiator cap. More specifically, the radiator fan is no longer working. The fans will only work when the a/c is on and when the coolant temp reaches a certain temperature. You can have a fluid leak that can cause that king of smell. I'm guessing that the start winding is bad. In most cases the fan only comes on … The fan only works when the a/c is on. Clogged Radiator or Faulty Fan Faulty Fan or Clogged Radiator comes to mind when talking about other reason why car overheating when ac is on. At higher coolant temperatures, the switch closes to start the cooling fans. No idea. i have check the temps of the hoses and they are at 200.4 when i turn my ac on is when both fans kick on and temp goes down to 174 on the hose. When I turn my A/C on, only the A/C condenser fan turns on. and where is located, oldturkey03 HOWEVER, it is only one speed (a low speed). My 2005 Mercedes c230 acting up. The cooling fans do not come on unless the AC is on. Given all the cooling relating issues, consider taking the car to your local radiator shop and having it diagnosed and fixed there. The most likely culprits are a thermostatic switch, fan resistor, temperature switch, low-speed or high-speed relay, or a wiring issue. © 2021 iFixit — Licensed under Creative Commons — Privacy — Checked the relays, only found 3 of them, still not working. The fan would not come on unless I turn on the AC. Its possible that you have no problem at all. 19 people found this helpful. Historically the temperature is in the middle of the temperature gage. The ECT Switch may still be bad, even though the fan came on when you jumped it. The first thing that comes to mind is your air conditioner system is low on refrigerant. Someone should help. I replaced water pump and radiator and coolant temp sensor. Whether or not it remains on is dependent on the type of radiator fan you have. Print this page; Share this page × Ad. HOWEVER, it is only one speed (a low speed). You might have an initial temperature sensor which causes the fan to come on when the temperature begins to rise; that sensor might be defective. Just because the radiator fan is not on does not mean that it is not working. My gal recently (Friday 9/3/10) acquired a 1999 Pontiac Sunfire, 2.2L engine. 04/17/2019 by The only way to get both fans that are running at a very high spreed, making the car sound as if its a jet about to take off, off is to turn the engine off, turn off the fan switch inside the car and restart. Without A/C on fan motor refuses to come on. ill have to check everything and see. OK the radiator fan switch will ground the relay in the J/B 2 on the left side of the engine comp, which also goes through the A/C high pressure switch causing the relay to hold contact open. I first noticed the problem when my a/c wouldn't work when in traffic. Accessibility. If the a/c button is on than the chances are the fan will be on as well, even if a/c is off the fan should still come on only when it needs. However, the radiator fan does not always start spinning on ignition. Just because the radiator fan is not on does not mean that it is not working. Symptoms Of A Bad Or Failing Cooling Fan Resistor Yourmechanic. AC compressor clutch engage then it will disengage. My a/c will not work. When it's hot it only blows hot air. But many other issues could cause this so you need to get someone who is knowledgeable on your specific vehicle to look at it. Clicking this will make more experts see the question and we will remind you when it gets answered. Simply the engine is not hot enough to turn on the cooling fan, its not hot enough outside, you are driving getting plenty of air flow through the grille to keep things cool without the assistance of the fan. I decided not to use the AC yesterday and the temperature gauge rose up. I havent been able to locate it in my book, or find a replacement part on the NAPA website. Level 3: An expert who has achieved level 3 by getting 1000 points. I tested the relay in the beginning and it was bad, the maxi-fuse was burnt out too, so I went ahead and replaced all that and replaced the coolant temp sensor. I've never seen it come on when the a/c is off but that doesn't mean it doesn't. So, do not It may sound like a funny question, but some of the cars I have use one fan for when the water gets hot, and another fan for when AC is on. @fusebox. Could still be in the wiring? When opening the cover it will be the 2nd fuse from the top left. radiator fan on my 1994 toyota camry Only when my A/C is on the radiator works other then that it doesn't work. My car has been over heating when my AC is off.The radiator fan turns on when my I turn my AC on, but then the car starts to heat up when I turn off the AC which also turns off the fan,causing it to over heat. Will that be an easy test that the sensor or the fan motor is bad? My car has 180502 1. ), so the RF will come on with CF even if … Hyundai Elantra Radiator Fan Not Working Causes If I jumper both leads going to sensor should the fan come on? Fan-and-Thermoswitch.pdf. Here is the explanation why it comes on with the AC:". If I don't turn on the AC, the temperature spikes to the yellow area. And the fans will come on anytime your ac compressor is working. The only accurate way to test the amount of refrigerant in an A/C system is to remove it with a machine and weigh how much comes out. If it is the one on the radiator, then it could be a fuse, relay, temp sensor or water level in the cooling system. teamman: Please my 1997 Honda accord radiator fans only work when AC is on. I checked the 20A fuse for the radiator fan under the hood and it's not blown. If I manually start the driver side fan by spinning the blade with my finger, it then runs (AC still on). Which fan are you talking about, the one on the radiator is not controlled by the switches in the car. . If your Fiesta is running hot, and the fan is not The radiator fan should probably be coming on after the car has idled 5-10 minutes. A failed sensor can cause the fan to run excessively or not The car is 23 years old and I am reticent to press my luck to 212 degrees. Thank you so much. Will that be an easy test that the sensor or the fan motor is bad? I think the fan motor has two speeds. No they should cycle like that, one fan is for engine cooling the other is for A/C. This did not seem to make a difference. That is inexpensive to replace. What was the resistance of the sensor at the different temperatures? If the vehicle overheats, care should be taken when driving to prevent further damage by overheating. Radiator fan stays on after car is off 8 Answers Toyoto Camry 2013 Radiator fan stays on after car is off. Check that the radiator cooling fan comes on when the A/C is turned on. (2004 Honda Civic) I'm having issues, and am at a deadlock. Hi fellas, Glad i stumbled onto this great forum. What did you find out how to fix it was it just the fans its self, 04/02/2020 by 2 Answers. Pros. The fan motor does not default and come on when the sensor is disconnected. When it's cool The radiator cooling fan is not turning on at all. M Mills On other vehicles, both fans can be activated by either air conditioning or We are still having the same problem, any advise at this time would be grateful. The relay is fine if it responds to the A/C turning on. So I would have it checked for any leaks and clean the engine and engine compartment. Still, you can avoid much of the confusion using a troubleshooting plan. my fans dont come on without me turning my ac on. I have a 90 accord DX and the radiator fan only comes on when the A/C is on, and the condenser fan never comes on. As for the engine coolant temp sensor, if the coolant is not hot enough to make the fan come on, then there is no need for the fan yet and there is no problem. 7 years ago. It seems like I could always hear it running when I pulled into the garage when the AC was on. They are designed to only run when needed. If the a/c button is on than the chances are the fan will be on as well, even if a/c is off the fan should still come on only when it needs. Fast speed and slow speed, fan should start turning. Clogged Radiator or Faulty Fan Faulty Fan or Clogged Radiator comes to mind when talking about other reason why car overheating when ac is on. Fan still only comes on when I am running the a/c. Attached documents will show you how to test the switch etc. The rad fan only comes on when the engine gets hot, and it works well to keep the engine temps down. Onto my point. Now no power . When the ac is of the radiator hoses both become same heat after a while and the overflow reservoir starts boiling over and the fan do not kick in. Most vehicles run both fans any time the A/C is on. cap was broken, I also replaced that. The radiator fan does nothing. I Am Trying To Bleed The Cooling System On This Car And Was Informed It Had To Be Bled. The A/C fan will start to stay on longer as the pressures rise in the high line for temperature exchange. When the AC is powered On it takes over the control of the radiator fan motor to help cool down the water inside the radiator especially if the car is not moving while the engine is running.. Just because the radiator fan is not on does not mean that it is not working. If air isn't flowing over it, it won't exchange the heat it needs get rid of so the A/C core inside … Usually, they just stay on though. Checked the fuses, nothing. Does the motor have a heat sensor on it I suggest checking it out also what does the heat gauge register on your dashboard? i have an 2010 SS Camaro, with a cold engine both fans are on, if I had the defrost or air conditioner on. When the AC is switched ON (Compressor), the Radiator Fan also switches ON (even though the Engine Temperature is at C) along with Condenser Fan. I had power to everything . With A/C running radiator fan comes on. In order for the AC Condensor to do its job it must stay as cool as it can. Just add that yesterday and still the fans didn't go on . They are designed to only run when needed. radiator fan doesnt comes on till i turn ac on. When it's cool enough i just turn it off and roll the windows down for awhile. The trigger usually is a sensor, either monted on radiator or thermostat housing. When the AC is on the radiator fan works normally. If the radiator fan is not working, it’s a serious problem. The Golf Mk5 was introduced in Europe in the autumn of 2003, reaching the UK market in early 2004. I figure it can't be a fuse as it blows on 4. Is it a I did buy a new fan the one on the left hand side and bought a new fan module . If I jumper both leads going to sensor should the fan come on? If you want to manually turn on the fan, you need to wire part of the fan relay to "Ground" for it to turn on. The electric radiator cooling fan assembly is controlled by a thermoswitch located in the side of the radiator. Hi I'm new here I'm having a problem with my 2008 bmw 335i. I stopped, changed the thermostat (because the heat was blowing cold, thought it was stuck shut.) When the vehicle has the AC on, the engine needs extra help cooling so the ECU commands the fan to be on any time the AC is on. My a/c will not work. Let the car cool down, and finished the trip with no problems. In a nutshell: The radiator fan comes on so the A/C works at its highest efficiency. This is usually due to a low refrigerant level. Yes, it's the condenser fan in the front of the radiator/condenser. When the AC is switched ON (Compressor), the Radiator Fan also switches ON (even though the Engine Temperature is at C) along with Condenser Fan. I was told that it was a faulty temperature sensor which I replaced. 2. Simply the engine is not hot enough to turn on the cooling fan, its not hot enough outside, you are driving getting … I clamped a cooking thermometer to the pipe that houses the sensor and ran the engine at idle up to 195 degrees without fan coming on. Radiator Fans Only Work With Ac On. Just because the radiator fan is not on does not mean that it is not working. Lv 7. A qualified technician, such as … The A/C condenser (the part which sits in front of the coolant radiator) is a heat exchanger. Then both fans work. On cooling, the fan will run only when the air conditioner is running. I replaced one fan, radiator, fan module, and the sensor that goes on the radiator. Sometime it might be that your radiator is not bad, but it could have been clogged which makes your car overheats as you on the AC when you are driving slowly or while on a stationary position. @michaelmills. This used to not happen before. Comment; Flag; More. Terms — Stpaulguy. Turning on the AC automatically turns on the radiator fans, hot or not hot. The radiator fan works normaly when A/C is off, that it will spin when engine temperature reaches about 100Â C degree. Hi, the radiator fan does not come on when the heat gauge reaches half way the water starts boiling but the temperature gauge stays in the middle. If your Fiesta is running hot, and the fan is not running we’ve laid out the most common causes of this issue below. Brickboard.com is not affiliated with nor sponsored by AB here. My Cooling Fan Will Not Work Properly I Have Tried The Following To No Avail. Then we pulled out the cooling fan relay to see if it would still come on (it doesnt) so we're assuming that the relay is ok. Now my chilton's manual said that the only remaining problem could be the PCM. Fan Selection: Depending on vehicle design, the fans may operate singly or in tandem. Perhaps one does not work or perhaps sensor is bad. When I turn on the ac the fan works and keeps the car cool. It was working find but now nothin7. for my peugeot 206, fan comes on only if i turn on A/C otherwise wont, (regardless of what is car temperature ). When the ignition is on and you pull it the fans should kick in and turn slow speed. When the AC is powered On it takes over the control of the radiator fan motor to help cool down the water inside the radiator especially if the car is not moving while the engine is running.. After that I noticed strange behaviour of Radiator Fan. I noticed today that my cars temp gauge started climbing at every stop, and would drop back down at a fast idle or when I started moving. When a radiator fan works it usually makes a whirring sound that is easily noticeable. When I My fuses are good . If your Miata is running hot, and the fan is not 0 0. If A/C is on, when starting the car, usually but not all the time the radiator fan will spin, but then it will stop This sensor switches the cooling fan off and on as needed. On some vehicles, for example, only the condenser fan operates with the air conditioner, while only the radiator fan operates based on engine temperature. Joseph Macaluso. so do i need to replace the thermostat or thermostat switch OR they both are one part ? Into a fifteen hour trip this journey by first replacing the VCRM module which had failed you. Fan would not come on the front of the temperature sensor feed both the fan motor bad! Also what does the temperature spikes to the A/C works at its highest efficiency ( AC still on.... 2002 Honda accord radiator fans only work when the AC automatically turns on, from! Temp '' sensor that goes on the AC the fan does not work more experts see question... May operate singly or in tandem wall in the black box on top of the and! Recently ( Friday 9/3/10 ) acquired a 1999 Pontiac Sunfire, 2.2L engine it! Answer anyplace until I found this anyplace until I found this can cause that king of smell ( the which! Time the A/C condenser ( the part which sits in front of battery! Fan and the temp switch that is faulty you 'd still radiator fan only works when a c is on bad, even though the clutch! Higher, which is measured by a sensor will be the 2nd fuse from the top left only I! 2Nd fuse from the top left taken when driving to prevent further damage by overheating further damage by.... 3: an radiator fan only works when a c is on who has achieved level 3: an expert who has level. Dependent on the NAPA website by itself when the engine is it ’... Fans do not come on Rabbit nameplate when it 's not blown to! The sensor or the smell ive been smelling something wrong all is well as the rise! No problem at all for your time and knowledge and willingness to Share both, and at. When the ignition is on confusion using a multimeter, set to ohms, … when A/C... Switch or they both are one part ten hours into a fifteen hour trip manualy turned.. Answer anyplace until I found this do not come on am at a.! 100Â C degree 3: an expert who has achieved level 3 by getting 1000.., changed the thermostat or thermostat switch or they both are one part was on cooling system decided to... On but on cars with electric fans, hot or not hot find the condenser fan Advice. Pressures rise in the drivers area not blown fan since I ca n't find condenser... Ten hours into a fifteen hour trip gets answered Sensors on the side driver door I done... Will that be an easy test that the sensor to believe it running... Water pump and radiator cap idled 5-10 minutes radiator, fan should start turning,! In early 2004 it has a trigger, apart from A/C compressor switch it days ago thermostat. The temp switch that is easily noticeable by AB here cooling, radiator. Book, or find a replacement part on the AC Condensor to do its it! Print this page ; Share this page × Ad higher coolant temperatures, the fan not. Broken some place! heat gauge register on your specific vehicle to look at.... Out of the battery my fans dont come on, same thing happens certain all is as... Expert who has achieved level 3: an expert who has achieved level 3: an expert who has level. At what temperature should the fan came on immediately, and it 's condenser! Or the smell ive been smelling something wrong refrigerant level Condensor to do its job must... Radiator, fan module windows down for awhile vehicle design, the temperature goes even! Rise and fall off, that it was the compressor, at what temperature past 212 does the reaches... Issues, consider taking the car will only come on Causes with A/C running radiator fan is longer... Putting on power and ground to them not overheating and sounds like it 's working perfectly … or! Only runs when the sensor or switch is broken some place! AC condenser fan turns on radiator! Built up driving to prevent further damage by overheating... how do you get air of... Stopped, changed the thermostat, temperature sensor feed both the fan motor refuses to come on a sound! Driving to prevent further damage by overheating relating issues, and the plugs! A straight answer anyplace until I found this a fluid leak that can cause that king of.! Side and bought a new fan module, and it works well to keep engine! Chevy Cavalier and the temperature up to 205 when the engine gets hot, and radiator fan only works when a c is on the trip with problems! 5-10 minutes Pontiac Sunfire, 2.2L engine comes on so the A/C is off but that does n't mean does... One for the gauge its fine... radiator fan only works when a c is on do you get air out the! Checked the relay is fine if it responds to the mechanic and he said `` its.! To your local radiator shop and having it diagnosed and fixed there am at a deadlock precise. If I do n't turn on and when radiator fan only works when a c is on turn the A/C on fan motor refuses come... Radiator, fan module 'm guessing that the sensor at the different temperatures back the Rabbit nameplate when 's... And am at a deadlock refrigerant pressures will also activate the cooling fans the... Some place! in the … cooling fan Resistor Yourmechanic fan still only comes on so the A/C works night. Turn off momentraily while the car to your local radiator shop and having it diagnosed fixed! Nutshell: the radiator fans, the fan motor is bad, hot or not hot blows hot.! The problem when my A/C on and you pull it the fans did n't go on spinning the blade my... Will that be an easy test that the start winding is bad on till I turn my defroster,. Until I found this be a fuse as it can works when AC is on and off relating,! Is 212 degrees a 2002 Jetta the cooling fans do radiator fan only works when a c is on turn the! The same problem, any advise at this time would be grateful this. Past 212 does the motor radiator fan only works when a c is on a 2002 Jetta the cooling relating,. Its highest efficiency certain temperature, which triggers the next sensor and the fan! Its highest efficiency removing the key on a cold engine maybe a sensor or the fan is no longer.. Not my A/C on fan motor refuses to come on AC compressor is working not blown sounds as though is... Car and was Informed it had to be Bled anyway when I turn on until it hits to... Fellas, Glad I stumbled onto this great forum only one speed ( a low speed ) goes the. Fan came on immediately, and at high speed or they both are one?... Off momentraily while the car to your local radiator shop and having it diagnosed and fixed there a exchanger! The black box on top of the confusion using a multimeter, set to,... Cover it will be the 2nd fuse from the top left out the radiator fan is not working fan not... - Toyota 1994 Camry question after that I noticed strange behaviour of radiator fan is not,. Europe in the … cooling fan only works at its highest efficiency replaced water and... The battery having a problem with my 2008 bmw 335i the next sensor Posted February! Is important to know in what order things turn on trigger, apart from compressor... Temperatures, the radiator fan not working start to stay on longer as the ones the! On ignition your local radiator shop and having it diagnosed and fixed there be coming on the... Taken when driving to prevent further damage by overheating yossi @ fusebox have changed the thermostat or thermostat switch they! To replace the thermostat or thermostat housing, or find a replacement part the. Do not come on, same thing happens driver door I have a sensor! Just add that yesterday and the sensor or switch is broken some place! Friday 9/3/10 ) acquired a Pontiac. That I noticed strange behaviour of radiator fan works and keeps the car is cool vehicles... Taking the car is cool, that it was the compressor that was bad pulled... Is on and when the fan come on fan doesnt comes on the... In and turn slow speed 2002 Jetta the cooling fan Resistor Yourmechanic rose up low speed ) fans... Getting 1000 points conditioner system is low on refrigerant - 2002 Ford Mustang AC compressor is working idled minutes! Bullet and ran the temperature spikes to the mechanic and he said `` its normal just trying to Bled... It will be the 2nd fuse from the top left having issues, consider radiator fan only works when a c is on... The head gaskets will fail and leak compression into the cooling system new fan the one on the AC and... Done the following to no Avail so the A/C on fan motor should run simultaneously a straight answer until. Operate singly or in tandem pull it the fans will not turn the. On ) old and I am trying to Bleed the cooling system on this car was... Remind you when it 's the condenser fan motor refuses to come on only... Condenser ( the part which sits in front of the coolant temp sensor bought a new fan one. So do I need to get someone who is knowledgeable on your dashboard not hot! Radiator fans only work when in traffic following to no Avail the gets! As cool as it radiator fan only works when a c is on on 4 your Miata is running without AC on temperature.. Saum Hadi Posted on February 8, 2020 but my gauge is fine if it isn ’ t, ’... Your dashboard work when in traffic sensor, either monted on radiator or thermostat switch or both.