Hi, I have a 2000 Toyota Celica GT. The compressor shuts when the room reaches the temperature but the fan does not go off. Please hepl. the control module over the radiator, the fan motor and circuit breaker connected to the fan motor as well as the radiator. I have a 2006 Pontiac Grand Prix 3.8 Supercharged. When the cooling fan starts, the engine becomes very wobbly, and it even tries to stop the engine. Answer: It's possible the fan bearing is all dusty, and the brushes are sticking. You can use either a test light or multimeter. But check the battery, there could be a bad cell, causing a discharge. How much wear and tear is really going on if the fans stay on during driving? The cooling fans come on way too late: only when the temp gauge is very high. I had even turned the heater on, the fans just work normal. The fan motor could be pulling too much current or the circuit has too much resistance. I'm trying to troubleshoot and also wondering can I just ignore this if there are no other problems. Use an aftermarket manual, if necessary. 1. Question: The Engine overheats but the relay is not picking up. I had to get a jump to get it to run … You may need to look at the diagram for your particular model to check for other possibly relay or switch in the circuit you are missing. The A/C requires the fan to run as part of the heat exchange process. I just checked the water pump with a long screwdriver and my ear to it, no noisy bearing sound, just low pitch steady hum, no leaks out leep hole. None of these tell us which is for the radiator fan so we can’t check it. Question: On a 2001 Honda Ex 4 cyl, which side is the condenser? 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. Also, a clogging radiator may be preventing proper coolant flow. No fan speed control, and when it did work, the fan would keep running after the vehicle was shut off. Why is the House of Lords retained in a modern democracy? Compare values to the ones on your manual. The coolant temperature fan switch/sensor at the bottom of the radiator is new and works as it should in another similar Camry (I switched it out to test). How can you tell what note someone is singing? There could be a wire that's not getting current behind the dash between the AC and cluster. Consult your vehicle repair manual to check the required sensors and switches. Answer: Check the fan relays in the power box in the engine compartment. Any suggestions? Why does my radiator attract wasps/yellowjackets? At least. inside fan stays on by: Anonymous The fan is on when the thermostat is on cool and the fan is on automatic. Set your air conditioning to the MAX setting and turn it on. Any ideas what the problem could be? The fan is not turning on low speed if the engine is on, even if it reaches the heat indicated. Answer: Check the circuit, there could be a short to ground somewhere in there. I called the A/C guy again and told him to come check the A/C for me, before that I went ahead and put some A/C stop leak which worked for thee days, now I went to the A/C guy and I told him what I did before I went to him. Question: My car is a 2012 Toyota Ractis model. 2. Answer: Check the Troubleshooting Shortcuts and the Troubleshooting Your Cooling Fan sections in the post. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. How can we locate this fuse? Then i have just noticed that the engine cooling fan comes on as soon as i start the car ( even when engine cold ) is this standard on this car ? If you don't have the service manual for your particular model, stop by your local public library. It is located near the radiator and looks like a small radiator. They do if they are straight wired. Question: I have a Chevrolet Aveo LT 2008. What else could it be? I pulled my codes and have none. If not overheating, check for a faulty coolant temperature sensor. If your engine is overheating and you suspect problems with the cooling fan, this guide gives you important troubleshooting tips, and the steps to diagnose the most common cooling fan failures you are likely to encounter on your car. Replaced radiator fan assembly on 2014 Nissan Pathfinder because of melted connector plug connecting module to car. You'd be surprised what you find out. Answer: There might be a problem in the control circuit. Presently the striped wire is not connected & after driving about 12 kilometers the temp gauge started to rise & the fan did not come on. Question: I drive a 1987 Ford Tracer / Mazda 323 B3 engine model; no ECU, basic. Follow the steps in the "Troubleshooting Your Cooling Fan" section. If the sensor is fine, check the wires. Then, the fan should come on. What type of helmet do you want for yourself? fan motor ok, checked with 12v source separate, changed rad sensor, no go where is rad motor relay? It has two fans, the Radiator fan seams fine. When I turn on the AC on in any setting, it doesn't do anything. The (PCM) will now detect a failed switch, store a Diagnostic Trouble Code (DTC) and turn on the fan(s).. Another problem could be a grounded wire or stuck relay. Question: Should a cooling fan connector switch get hot to the touch? The inside fuse is good, now what ? Question: Will a car overheat on a long distance trip with no cooling fan? Even kicks on when its a cooler day. Can the ambient temperature sensor cause electric radiator fan to run even when engine is overnight cold when AC is on for several minutes as I drive ? If it doesn’t, and you have a domestic vehicle; the coolant temperature switch is a normally open type that stays … Besides, the manual can help you locate sensors, relays, switches and trace circuit wires as necessary. What could be the problem? So it's better to take a look at it now that can be much cheaper. Asking for help, clarification, or responding to other answers. Before he did the he ad some freon he told me he want to see how long it going to stay before the A/C the get hot again which he did, and it took it ten days the A/C got hot. Closely examine the connector for corrosion or damage. Add some penetrating oil to the bearing and see if it helps. Question: My 95 Cadillac DeVille, when I unplug the relay, the fuse blows to the engine coolant sensor. I perceive a kind of gaseous odor while the ac is cooling. Once it reaches a 200 plus or minus depending on vehicle the fan will kick on. I recently purchased a new Universal 120w cooling fan for my BMW 318iS. Car runs hot idling but is fine while moving. Only thing not replaced I know of is water pump. I checked each relay associated with rad fan or condenser fan and each has neighboring relay with the same specs. If I disconnect the ECT for a moment while the engine is still cold the fans go on. Yes the the a/c is on. Suggestions for a simple remote desktop for me to provide tech support to my friend using ubuntu but not computer literate? Answer: Yes. Answer: Check the coolant fan relay and coolant temperature sensor. What should I look into to remedy this? You can find the diagram in the repair manual for your vehicle. Only increases speed with AC on, but not very fast just little difference. As mentioned above, if the AC or Defrost is on, that could also cause this. If you don't have the cold and hot values for your switch, you still may want to test the switch and compare the difference in values. It is a 1995 Ford Festiva. Look for loos or corroded wires-connectors. Question: The fan on my car started to turn on too often. the control module over the radiator, the fan motor and circuit breaker connected to the fan motor as well as the radiator. After it turned off its become okay. - Hi everyone! Just to make sure, check the charging circuit voltage drop, to see the condition on the wires and connectors. Once it reaches a 200 plus or minus depending on vehicle the fan will kick on. Photo courtesy of youngthousands at Flickr. It is ok for the engine cooling fan to keep running for a few minutes after turning off the car. When the PCM is commanding a fan relay ON, the voltage of … Answer: There could be a problem with the cooling fan control module. If the relay shorts internally, it may cause power to be permanently switched on, which will cause the fans to run at all times. Dan Ferrell (author) on October 07, 2019: There might be too much resistance in the circuit. Answer: Check the relays and connectors for the high-speed circuit. I think that if the fan wouldn't work the condenser will become too hot and malfunction? https://axleaddict.com/auto-repair/Charging-System... Other possibility is a faulty fan motor. Then you notice the engine cooling fan is still running even though the car is turned off. If the fan stops, replace the sensor. The AC is OFF. Can we power things (like cars or similar rovers) on earth in the same way Perseverance generates power? Using jumping wires, connect battery negative to the ground side of the fan connector and positive battery to the other wire. Answer: You may want to check the coolant temperature sensor. Is something on its way? Why is the stalactite covered with blood before Gabe lifts up his opponent against it to kill him? I have a 2006 Dodge caravan, I had the radiator replaced about 6 months ago my recent problem is the fan comes on when it's not even warmed up, once it comes on it seems to stay on until I turn my van off. The battery is also dead. If the fan didn't come on, you'd still be warm inside. During the winter months, your radiator fan saves even more energy when enough cool air flows through the radiator on the highway.Even if your cooling fan doesn't have a complicated circuit, you still need to know where to look when your fan doesn't work as expected. Download trouble codes, even if the engine light is not on. If the AC sensors detect the high temperature in the coolant, they'll keep the AC off. Answer: On some models, the cooling fan is configured to run after the ignition is removed to remove extra heat from the engine. The overcharge of a faulty compressor or the circuit can throw the computer into safe mode. The ECT seems to keep the fans off until engine is warm about 10-12 minutes after a cold start. How can we construct a control-control y-rotation (CCRy) gate in Qiskit? Turn on the AC and set it to MAX when at idle and see if it comes on. Question: Why is my car's cooling fan still on after I turn my car off? Cooling fan helps control engine and other components temperature in the engine compartment. Make sure they are well connected, not loose. Cooling fans stay on at all times. Sorry, I don't have the wiring diagram for this model but look for the fuse box, either under the dashboard or in the engine bay, ---firewall, driver's side possibly. I live in Minnesota and when I started the truck 2 days ago (25 degrees), my coolant fan turned on high right after startup. I have got a problem that the cooling fan is working continuously from when the key is on till the engine is off. My son will come on but it'll run slow and stop. Wait for the engine to reach operating temperature. I'm thinking that coolant is not properly circulating so the fans remain on trying to lower the temperature. Start and idle the engine, and backprobe the connector terminals with the test light. Is this a huge problem that I should try to fix? Visual design changes to the review queues, Opt-in alpha test for a new Stacks editor. Still the alternator should be putting out over 13 volts, even if your meter says otherwise. Why is this? Question: I have a 1995 Ford Taurus GL Station Wagon. Now backprobe the other wire at the connector. The electric cooling fan uses a direct current (DC) electric motor with a thermo switch, module or computer control to turn it on or off, depending on coolant temperature or AC operating condition.On older fan circuits, the thermostatic switch connects to battery power on one side, and to the fan motor on the other. Now I understand that there is a condenser in front of the radiator which gets hot so the fan is turned on to cool it and not the radiator engine. What could be the problem with my electric cooling fan? Coolant is flowing steady through radiator, [about the A in normal], just before fan comes on, coolant starts to rise through open neck,[ about the end of L in normal], of radiator then goes down into radiator again and flows through radiator no problem, [A in normal again] when fan is on. One of them might not be working properly. As such, if you stop the car when it is doing a regen, the fan stays on to cool it back down. What would cause this? Question: I just put a starter on a 2010 Hyundai Veracruz and now the car is running hot and windshield wipers won’t work. A feature in the computer called "afterblow" may have been enabled. It was working find but now nothin7. Thank you! Question: I have a 2009 kia Sedona. If you have a capable scanner, the circuit may be monitor to check the switches. How do i fix that... Hi, just wanted to say a big thanks! On many modern vehicles, if you want to confirm whether your cooling fan is in working order, you can start the engine and let it idle. There could be a loose wire or the relay may be faulty. 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. Been battling for 3days now. I've read that fans generally don't fail, but this seems like a lot of unnecessary spinning. Dan Ferrell (author) on September 27, 2018: Check for power to the relay with the ignition On first. The wires from the car are brown, blue, another colour with a stripe in. If it does, replace it. Answer: The problem could be in the cooling fan circuit, a faulty battery, or (less likely) the charging system. This behaviour is by design. I know my fan works cause when I unplugged the sensor it came on. Check where the voltage is stuck for that side. Question: Why does my 2012 Silverado volt gauge drop from 14+v to about 12v when the electric fan is running? In a nutshell: The radiator fan comes on so the A/C works at its highest efficiency. This seems to only happen when the temperature outside is 92 degrees Fahrenheit or above and I'm using my AC. Now they just stay on after the car is warmed up and don't go off until the engine is turned off. Photo courtesy of EvelynGiggles on Wikimedia. Do you think the fans need to be replaced or not. It might not responding properly when the load increases. Have it diagnosed first before replacing any components. Now the 40a hasn't blown, and its currently 80 degrees out. When I got to him I explained to him what I did the very first time about the broken bolt, he told me if I told him he would not let me not let me do the job prior not to remove the broken bolt. Fan kicks on about 30 seconds after vehicle is started and is extremely loud. Question: What would cause my cooling fans to stay on even when the vehicle is cold? they said the cooling fan broke (no warning) and the engine blew. You need the wiring diagram for your model to trace voltage in the circuit. If you’ve driven in hot weather that could also be the cause of one or both fans remaining on since there is no longer airflow across the radiator and condenser, once the vehicle is parked, unless one or both fans … Posted: Sun 11 Jul, 2010 3:36 pm: Hi All New to the forum so im sorry if this has already been asked. Answer: In some cases, depending on the fault, it may prevent you from starting the engine or cause other issues. It won't work correctly if the fan isn't running. I'll revisit the issue once the cooler temps arrive, but also might not care to drive in sport mode ever again and just … Yet a blown engine (full … Check the belt that runs the pump. Many single electric fan systems normally have a high and low. Engine fan stays on all the time when ac is on. My nissan almera swing the engen bt doesn't run out. Thus, the American Muscle Car was born. Had the AC system checked. I am not running aircon at the moment, no need. How do I fix this? You may need your repair manual to check on some sensors. When a signal goes out of predefined parameters, the computer sets a trouble code. 4. Look for the definition of the code online and you'll get an idea about the problem. That can also be a problem. The fan speed changes a little crazy too much and it actually seems more dependent on not speed necessarily, but engine power; the fan speed decreases significantly when revving up and once I take my foot off the pedal, it resumes proper speed. But if you turn on the A/C, it will come on. What could cause my Chevrolet's fan to only turn on with the A/C? You may be dealing with a stuck-open thermostat. Unit Testing Vimscript built-ins: possible to override/mock or inject substitutes? Question: I want to know if it is possible to convert a E46 BMW 330i cooling fan to turn on at 70% and not 90%? Check the alternator and battery with a Voltmeter. Not sure what your question is here. The blower fan or whatever fan is associated with AC kicks into overdrive. Answer: Check the AC compressor. Hope this helps. There might be a short in the circuit. Currently I purchased used toyota vitz 2001 model car. If you're going ahead and replace the compressor, go ahead.

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