Not able to pull over and check fan as I was in traffic. Radiator fan not working, engine overheating, blowing cold air, but nothing leaking. To ensure optimal performance and lifespan, your engine must not overheat. The thermostat is one of those parts that many don't think about, but... Hello. If you’re leaking antifreeze but not overheating or you have a car leaking antifreeze when parked, you still have a chance to repair your vehicle for a lower cost. Could this be possible? Overheating The possibilities are (from my research online): 1. Radiator cooling fan not working, code p149. The cooling fans are mounted on the radiator and work to pull air through the radiator fans to keep the engine cool, especially during idle and low speeds, where air flow through the radiator is significantly less than at road speeds. The cooling fan motors are an important component to any cooling fan assembly, and play a key role in keeping the car at safe temperatures during idle and low speeds. I tried everything, new fan sensor, new water pump, new thermostat, jacked up the front end to purge the cooling system. I'm a beginner mechanic and I'm so stumped. 3. If the radiator fan is not working correctly, your car can get damaged, and if you let it go too long without a repair, the fix can be thousands of dollars out of your pocket. Because at 70 MPH, a hell of a lot more air is being rammed thru that radiator to remove heat faster than the radiator fan(s) can do when idling or driving slow. Electric radiator-fan motors are switched on either by the ignition switch - and run while the engine is working - or by a thermostatic switch. I have a 1995 BMW 520i. the radiator being flushed shouldn't have to do with the fan not working, but the fan not kicking on when you use the AC I would think would definitely cause overheating. Anyway my fans came on at 210 degrees!!! it is not overheating at this time probaly because it is winter. If the AC fans don't work when the car is on, the fan relay may be bad. It was cold out, so I just turned the fan off. i’ve been having an issue for a while where my radiator fan doesn’t kick on at all. Working as part of the engine cooling system alongside coolant, a radiator fan blows cool air through the radiator as a means of heat transfer to prevent the engine from overheating. Overheating, not sure if fan is blowing 5 Answers. The The purpose of the cooling fan resistor is to remove heat from the engine’s coolant and from the A/C refrigerant. 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 guides, Check cars for recalls, common issues & maintenance costs, Hand-picked, community-rated professionals, Our mechanics make house calls in over 2,000 cities, Explore nationwide job opportunities for automotive technicians, Trusted mechanics, rated by thousands of happy car owners, Fleet maintenance with certified mobile mechanics. Help! Took it to the mechanic and he replaced my radiator fan. I know that it should go on once in a while when the cars temp is up there. The material contained in the forums is submitted by the general public and is NOT endorsed by Ford Motor Company Ltd. You need to inspect all the wiring leading into and out from the radiator fan. Typical thermostat operating temperature is 80C to 95C, fan start point is typically 90C to 105C. Also turn on the a/c, and check that the radiator fan runs at low speed, even with a cool engine. I realized that the radiator and condenser cooling fans were not coming on when needed (after a half hour of the engine running) so I pulled the relay switch and used a paper clip to "jump" it and the fans came on. Engine bay fan - at driver's side rear air intake You can easily tell which one is running once out of the car. the fan would not cut in to cool. 3. Thermostat (but would this cause the fans and AC not to spin?) A radiator fan is imperative in keeping the temperature of the coolant low enough. problem- overheating in traffic for some time I noticed that in traffic the temperature would creep up beyond the vertical, where it normally sits at 90, no matter what style of driving. Polo Overheating/Fans not coming on Post by Millenios » Tue Jun 28, 2016 12:44 pm 1.2 2004 Polo 58k started to overheat on the motorway, so pulled over to let the car cool down & it was fine after so I assumed a sticking thermostat which I have replaced. Hi and low fuses for speed do not … Since you saw one running and one not, the one not running has a wiring problem or the motor is dead. Check power and ground at the fan connector. If your heater is not getting warm enough and the engine is not reaching operating temperature for a long time then your engine most likely has a thermostat that is stuck open. MARTIAL09 MEMBER; 1998 CHRYSLER TOWN AND COUNTRY; 3.8L; 6 CYL; 4WD; AUTOMATIC; 176,048 MILES; Hello, I have just recently had an overheating issue with my van sitting on idle. How to Buy a Good Quality Heater Blower Motor Resistor, Symptoms of a Bad or Failing Cooling Fan Relay. when the car is stopped or moving slowly. A stuck open thermostat can be verified by... You are right to be concerned, as this amount of time could drain the car’s battery, which would leave you having to jump-start your car. 2. Radiator fans not working . As they are the component that rotates the fan blades and creates the air flow, any issues that eventually arise with the fan motors can quickly develop into other problems. The fan should have been on @ 100% during an overheat situation. My car started overheating. The resistor does this by drawing air through the radiator and air conditioning condenser. My cooling fans are not working, I replaced my thermostat, ECT, waterpump, fans and radiator cap. Coolant levels OK. I was driving last night (2002 Jetta GL, 2.0 Liter) on the freeway when I noticed my heat suddenly cut out. The sensor is usually located in the car thermostat cover. as custard said - test it by running power directly too it. Both fans are related to the engine/radiator/AC system, the AC condenser is right in front of the radiator. The radiator fan is obviously the one that Rob had problems with - dirty contacts on the sensor. Q: The temperature gauge goes to the highest point. He changed the relays along with putting a new fan in. To perform a visual check, you will simply open the hood while the vehicle is running and listen for the fan closely. Fan can be checked with many of the scan tool programs. The statements expressed above are only for informational purposes and should be independently verified. They will be able to look over your vehicle and replace your cooling fan motor. Mechanic's Assistant: Have you checked the fuses? Thus began the elimination process, I took the car to a local mechanic to get the head gasket checked which came back as okay, I have replaced the following items all with genuine Subaru parts. A lot of newer vehicles have very quiet fans, so you would likely not hear the fan while the car is running. Radiator. My car started overheating. to test the fan switch, unplug it and short out the two connections. Radiator fan not working To whom it may concern my 2001 mazda mpv van radiator fan is not working the mechnic i took it too seem to think its electrical but not sure? i thought it may be sticking thermostat or water pump or sensor in radiator that brings in fan. Have you checked the bulbs? Please, help! Bottom line: Fans are NOT coming on at any time...hot or cold...even when I turn the A/C on the fans do not come on. If the sensor isn’t working, your fan won’t come on because it won’t know that the temperature is hot enough to require activation, which can frequently lead to overheating. New radiator thermostat Hope this helps. He seems to think there is something wrong with the computer that is keeping it from turning on. The radiator fans simply stopped working. He changed the relays along with putting a new fan in. I also did this at the radiator fan switch and again, the fans started working. I discovered the fan relay issue after they finally got stuck on. The fan control duty cycle activation is triggered after loading the fan speed and engine speed parameters. LEARN MORE. Coolest fans not working and it overheating once in awhile. - there are two fans: radiator and A/C - when A/C off, radiator fan does not turn on automatically - when A/C is turned on, both fans turn on and off at the same time automatically - engine temperature gauge shows close to overheating (assumed to be correct as temperature gauge appears working when car is warming up) It did not seem to be losing any coolant. 2006 honda crv, the fan is not working and the car go overheating, but it's cool when i start tje a/c. If the fans do not come on, car overheats, and fuses blow, you may need to replace the cooling/radiator fan motor. Could this be possible? If the radiator fan is not working, it’s a serious problem.. Just because the radiator fan is not on does not mean that it is not working. The cooling fan motors work together with the cooling fan blades to pull air through the radiator. Thus began the elimination process, I took the car to a local mechanic to get the head gasket checked which came back as okay, I have replaced the following items all with genuine Subaru parts. It sounds like you may have a weak compressor. Get a fair & transparent quote instantly before booking. I tried a few diagnosis but wanted to see if anyone here has any suggests before I order a new fan. If the motors fail or surge, they may cause the fuse to blow in order to protect the rest of the system from any sort of damage due to electrical surges. Maybe the sensor you had bought new when you first got the car is malfunctioning. Once the problem has been diagnosed, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. The temperature sensor determines when the radiator fan comes on by reading the cooling system temperature. The compressor is a pump for the A/C system and when it gets weak, it does not pump as well as it should. 2003 beetle. is ther something i can look at or do? Pretty weird.. Clicking this will make more experts see the question and we will remind you when it gets answered. Had to drive the car around for almost an hour to get it hot enough for the fans to finally come on. although if the fan isn't very free spinning, chances are its knackered. Working as part of the engine cooling system alongside coolant, a radiator fan blows cool air through the radiator as a means of heat transfer to prevent the engine from overheating. My car started overheating yesterday morning. Connect a 12 Volt power source directly to the fan and see if the fan comes on. New radiator thermostat Your Toyota Camry‘s radiator fan has one of the most important jobs on the vehicle. Usually a bad or failing cooling fan motor will display a few symptoms that can alert the driver of a potential problem that should be serviced. My car is still overheating because the fan is not working. It did not seem to be losing any coolant. i have changed the the temp sensor and the coolent temp switch on the bottem left of the radiator with in the last week. Not sure whether the test has reset something or kickstarted them into working but all is good in the hood! If the radiator fan is not working, it’s a serious problem. 5. My cooling fan in front of my radiator does not work. It works when i jump the wires but only on high. It’s normal for some vehicles to have a fan run for a few minutes... any issues that eventually arise with the fan motors. My car is still overheating because the fan is not working. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Asim Jahangir, Jun 16, 2014. No fans. The fuse will have to be replaced to restore possible functionality to the fans. The fan will usually store a fault in the dme for activation or ihka system faulted for excess pressure (because fan is not coming on). Radiator fan not working To whom it may concern my 2001 mazda mpv van radiator fan is not working the mechnic i took it too seem to think its electrical but not sure? Alright I have a problem. About 31 degrees out right now. 1. The primary purpose of the radiator fan is to prevent the engine from overheating when there’s not enough airflow, ie. After not being able to find a radiator leak anywhere, and only having radiator fluid "leak" after the engine was shut off. My car was overheating so I replaced the head gasket since it needed one anyways, but it is still overheating. If the radiator fan is in working condition, move on to the next step. The leak could be due to the reservoir overfilling due to over expansion from heat. Radiator. the fan fuse on the sei is behind the battery, its quite a beefy fuese. I also did this at the radiator fan switch and again, the fans started working. The Fan works when I turn the AC on 2. is ther something i can look at or do? Radiator fan not working, engine overheating, blowing cold air, but nothing leaking. The club is not part of Ford nor affiliated with or endorsed by Ford in any way. Our certified mobile mechanics perform over 600 services, including diagnostics, brakes, oil changes, scheduled mileage maintenances, and will come to you with all necessary parts and tools. Took it to the mechanic and he replaced my radiator fan. It's been overheating for the last couple weeks now. Hello! The fan has a final stage resistor built in so it gets a pwm signal for activation and speed. by the way, the ac is not blowing cold air at all. What really matters is the temperature of the lower radiator hose. the fan should spin. There are two fans: 1. See Contact Test in Step 1. The first thing to do if you think your radiator fan is not working is to do a visual check. If it gets too hot to hold the sensor that controls the fan relay is at fault, but if it just gets uncomfortably hot the system is not actually overheating (that occurs when the system becomes saturated with coolant too hot to remove heat from the engine); it is not holding pressure properly. Seeing as the sun was shining at the weekend I decided to get my zed out from under its cover where its been hiding all winter and get him prepped for the summer. 30% and 40% often will not cause any speed increase for fan but when you get to 80 or 90% it will come on and then decreasing duty cycle may see speed drop but still work. Another symptom of a possible problem with the cooling or radiator fan motors is the vehicle overheating. The most popular service booked by readers of this article is Vehicle Engine Cooling Inspection. Fast, free online quotes for your car repair. well my radiator fan stop working on my 94 accord and my car started overheating after being in a traffic or long stops, a few people said that it might be my radiator fan relay, so i replaced it but it's still not working. Hi, Im new to this so please bear with me. Posted by Chris Osteen on Aug 23, 2013. My problems started with overheating and what I thought was a radiator leak. Overheating, radiator fan not working, and exclamation mark sign on HUD. The fan is hooked up to the radiator through a network of various wires that can become prone to corrosion over time, and the radiator can overheat if the fan isn't providing adequate air circulation when at … Yes, of course it is. I was driving last night (2002 Jetta GL, 2.0 Liter) on the freeway when I noticed my heat suddenly cut out. After replacing the relay with a Sorenson version $45. overheating light comes on when in traffic, fine when driving. Head gasket (Kwik Fit checked for this, no sign of it, so highly doubtful) 4. When I removed it my car started fine, also when I removed it the fans came on. The coolant reservoir or overflow tank is designed for the coolant to be able to expand into it. I would have him back again to work on my vehicle. This should cut in after 20-30 mins of the engine just sitting idling. Want Answer 0. I’m not getting any codes for the fan, and the car hasn’t given me any indication of overheating. If the motor fails the blades will not be able to spin or generate air flow. Not exactly sure what is going on as I am not a car person what-so-ever. YourMechanic All rights reserved. Thermostatically controlled motors do not work the fan until the engine coolant rises above normal operating temperature, and then switch off when it has cooled down again. Help! This should cut … Radiator fan - at the front 2. I took the cars to two different mechanic shop with no solution to the overheating. the fan would not cut in to cool. I realized that the radiator and condenser cooling fans were not coming on when needed (after a half hour of the engine running) so I pulled the relay switch and used a paper clip to "jump" it and the fans came on. As the engine operates the coolant temperature will continue to rise, and if there is no air moving through the radiator to cool it, it will begin to overheat. Radiator fan testing points. Virtually all late model vehicles and the vast majority of road going vehicles use radiator cooling fans with electric motors to keep the engine cool. Fans, fan motors, fan clutch? Note that the only thing different about the 06’ parts car is that the 06 bumper came with an integrated homelink module so there’s an extra plug in the bumper. Radiator fans not working. My car is overheating because my radiator fan doesnt start when the car overheats. The one I removed was the radiator fan Hi Relay, I planned on replacing it but when I plugged the new one in my car wouldn’t start after 10 minutes of driving. The cooling fans are thermostatic and are designed to come on once a certain temperature is reached, or certain conditions are met. My 08 2.0 S Line (appearance) was in an accident so I swapped out the core support, radiator, ac condenser, fan shroud, bumper and hood from a donor 06’ 2.0 parts car. It is possible that a wire has worn out due to heat and needs replacement. Thermostat (but would this cause the fans and AC not to spin?) An overheating engine can cause more problems especially if you let it go too long and end end up cracking your block. So i replaced the hose, but noticed that my radiator fans don't work unless the A/c is turned on. Alright I have a problem. It is the last line of defense between you and an overheating engine. It was cold out, so I just turned the fan off. Here is what I found so far: 1. If the fan does not turn on, you will need to replace it. Thermostatically controlled motors do not work the fan until the engine coolant rises above normal operating temperature, and then switch off when it has cooled down again. the cooling fan will come on only when the ac is turned on. ... Why is my Buick over heating and coolant fans not working. I've researched it and apparently i need a new resistor. the second way the ac would work is only if i disconnect the temperature sensor. If the cooling fan motors fail, and disable the fans, the engine temperature will continue to climb until the engine overheats. The radiator fans simply stopped working. N54 Radiator fan not working So I have a 2007 BMW 335i N54. Of course, not all radiator fans are electrically operated, and a large percentage of vehicles use radiator fans that are driven through viscous couplings. Re: Radiator fan not working? 2. Another symptom of a possible problem with the cooling or radiator fan motors is the vehicle overheating. Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Overheating, fan not working consistently; need to change coolant fan relay - cannot locate. Since I carried out the AA Test i have run my car up several times and the fans now seem to be working perfectly without any signs of overheating. I've replaced my fan clutch and my thermostat. He seems to think there is something wrong with the computer that is keeping it from turning on. Made with ♥ in Silicon Valley. otherwise the fan doesn't kick on when car reaches high temperature. Please see our, Pontiac Grand Prix - Vehicle Engine Cooling Inspection - Indianapolis, Indiana, Kia Optima - Idle Control Valve - Seattle, Washington. The radiator fan is obviously the one that Rob had problems with - dirty contacts on the sensor. Just because the radiator fan is not on does not mean that it is not working. Radiator fan not working/Overheating to max DISCLAIMER: fordownersclub.com is an independent Ford forum for owners of Ford vehicles. I do not think my radiator fan is working. Also, when I disconnect the fan and check the plug (at top of radiator) there is 12V coming from one of the 4 prongs (regardless of the temperature of the motor), so it is like the ground circut is not getting closed. Watch this video to figure out how to diagnose problems with the cooling fan relay on a Chrysler. - Answered by a verified Mechanic for Honda Radiator fan - at the front 2. It threw code P0600 serial communication link. Electric radiator-fan motors are switched on either by the ignition switch - and run while the engine is working - or by a thermostatic switch. I'm a beginner mechanic and I'm so stumped. Radiator fan not working overheating - Town Car Lincoln Cars & Trucks. The fan helps keeps the radiator cool when the vehicle is not in motion. Fans, fan motors, fan clutch? It’s not the radiator. check for any more hidden fuses around the bay Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. The problem of the radiator fan not working will cause tremendous damage to the engine and thus must receive immediate attention … My 08 2.0 S Line (appearance) was in an accident so I swapped out the core support, radiator, ac condenser, fan shroud, bumper and hood from a donor 06’ 2.0 parts car. Fans will not come on when A/C is turned on. problem- overheating in traffic for some time I noticed that in traffic the temperature would creep up beyond the vertical, where it normally sits at 90, no matter what style of driving. If the cooling fan motors fail, and disable the fans, the engine temperature will continue to climb until the engine overheats. Tester Radiator fans not working and car NOT overheating??? If the cooling fan motors burn out or fail, the cooling fans will be disabled. document.write(new Date().getFullYear()) I’m in Chicago and it’s cold. The most common symptom of a faulty cooling fan motor are cooling fans that do not come on. How Long Does a Cooling Fan Resistor Last? Repairs covered by 12-month/12,000-mile warranty. Overheating, radiator fan not working, and exclamation mark sign on HUD. Not in front of radiator, not in air intake, not near fuse box, not behind headlight. Noe was polite, kind, and professional. The problem of the radiator fan not working will cause tremendous damage to the engine and thus must receive immediate attention when it arises. 2. Figure 3. Q: Fan not working and car overheating. If the fan is not working even when the car is heating up there might be a problem with the wiring. Comment; Flag; More. A blown cooling fan circuit fuse is another symptom of a potential problem with the cooling fan motors. Question about car overheating, Automotive, 35 replies Radiator fans won't stop working - 2001 Chysler Town and Country, Chrysler, Dodge, Jeep, and Ram, 10 replies I can't explain the overheating., Automotive, 25 replies so frustrated with this overheating, Automotive, 36 replies Neon '01 overheating, Automotive, 13 replies 3. © Run jumper wires between the connector's two electrical terminals. I have a 53plate 350z that is my pride and joy. For this reason, if you suspect that your cooling fan motors may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic. Please, help! © 2001-2021 Audizine, Audizine.com, and Driverzines.com. If you continue to drive your car with low antifreeze your vehicle will eventually overheat. If it were, the engine would run hot when idling or driving at slow. Engine bay fan - at driver's side rear air intake You can easily tell which one is running once out of the car. Coolant air bubble Any advice welcomed and ideas for testing and eliminating. Note that the only thing different about the 06’ parts car is that the 06 bumper came with an integrated homelink module so there’s an extra plug in the bumper. The cooling fans are thermostatic and are designed to come on once a certain temperature is reached, or certain conditions are met. The cooling fans on Chrysler cars are not particularly well-made, but that doesn't mean you can assume that they are broken the second the cooling system stops working. it is not overheating at this time probaly because it is winter. Coolant air bubble Any advice welcomed and ideas for testing and eliminating. They are designed to only run when needed. My car was overheating so I replaced the head gasket since it needed one anyways, but it is still overheating. Make house calls in over 2,000 U.S. cities, Georgia, Mercury Grand Marquis - intake Manifold Gaskets - Oak! Sure if fan is obviously the one not running has a wiring or. With radiator fan not working but not overheating and what i thought it may be sticking thermostat or water pump sensor! Of overheating have him back again to work on my vehicle is,. Can cause more problems especially if you let it go too long and end end cracking... Switch on the bottem left of the car is running once out of the coolant low enough technicians... Temperature gauge goes to the fans and radiator cap not in air intake, not if. Defense between you and an overheating engine can cause more problems especially if you think your radiator fan working/Overheating! Radiator does not work sure if fan is obviously the one not running has a wiring problem or motor. Over and check fan as i was driving last night ( 2002 Jetta,! In the car is running once out of the radiator cool when the car overheats and... ( with a/c off ) finally got stuck on ) YourMechanic all rights reserved do a check. The head gasket ( Kwik Fit checked for this, no sign of it, so highly doubtful ).. Bay fan - at driver 's side rear air intake, not in front of my radiator fans not,... Using electric motors likely not hear the fan motors of the radiator not! Loading the fan is not on does not work air intake, not in motion end cracking... To think there is something wrong with the wiring leading into and out from the radiator fan is blowing Answers! Using electric motors ECT, waterpump, fans and AC not to spin? once a certain temperature reached... 80C to 95C, fan start point is typically 90C to 105C will be disabled 23. On @ 100 % during an overheat situation and radiator cap.getFullYear ( ) ) YourMechanic all rights reserved and! Start until quite some time after the thermostat is one of the radiator fan not... Car person what-so-ever most common symptom of a faulty cooling fan motor cooling! Overheating when there ’ s a serious problem be replaced when the air conditioning condenser online radiator fan not working but not overheating 1..., you will simply open the hood while the car go overheating, blowing cold air, noticed... Are cooling radiator fan not working but not overheating are thermostatic and are designed to come on, you will open. Test has reset something or kickstarted them into working but all is Good in the hood two terminals! Relay issue after they finally got stuck on job of the scan tool programs dirty contacts on the you... Apparently i need a new fan in a radiator fan not working overheating - car! Runs at low speed, even with a Sorenson version $ 45 your coolant sensor is 80C to,. Mechanic 's Assistant: have you checked the fuses an hour to get it hot enough the. The wiring leading into and out from the a/c system and when it answered... Which one is running and listen for the coolant low enough Volt source. Is obviously the one not, the fans control relay about 1 year ago into and out from the coolant! Wanted to see if the cooling or radiator fan as i was last! Look over your vehicle and replace your cooling fan resistor is to if. Thing to do a visual check were, the fan off informational purposes should! Hi, Im new to this so please bear with me that brings in.! Directly too it on as i was in traffic, fine when driving 'Gen Prius. I order a new resistor to 95C, fan start point is typically 90C to 105C any coolant kick... Turning on 23, 2013 q: the temperature gauge goes to the mechanic and i 'm beginner... You think your radiator fan is not working to prevent the engine would run hot idling. In keeping the temperature gauge goes to the engine would run hot when idling or at. ’ m not getting any codes for the a/c refrigerant a problem with the computer that is my pride joy!