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P0484 OBD-II Trouble Code: Cooling Fan Circuit Over Current
Diagnostic Trouble Code (DTC): P0484 P0484 code definition When the PCM detects a voltage reading from the electric cooling fan control circuit that is either too high or too low in...
Symptoms of a Bad or Failing Heater Blower Motor
If your car's heater doesn't work, only works on certain speeds, or only cold air comes out, you may need to replace the heater blower motor.
P0494 OBD-II Trouble Code: Fan Speed Low
Diagnostic Trouble Code (DTC): P0494 P0494 code definition If the PCM has detected a voltage reading that is too low from the electric cooling fan control circuit, the P0494 code will...
Symptoms of a Bad or Failing Condenser Fan Relay
If your car's AC is blowing hot air or its engine is overheating, you may have to replace the condenser fan relay.
Symptoms of a Bad or Failing Cooling Fan Relay
Common signs include the engine running hot and cooling fans either not functioning or running all the time.
How Long Does a Cooling Fan Relay Last?
The purpose of the cooling fan relay is to pull air through the A/C condenser and the radiator. Most vehicles have two fans, one for the radiator and one for the...
Symptoms of a Bad or Failing Cooling/Radiator Fan Motor
If the fans do not come on, car overheats, and fuses blow, you may need to replace the cooling/radiator fan motor.
How Long Does a Cooling/Radiator Fan Motor Last?
The cooling/radiator fan motor is part of your vehicle’s cooling system. It transports heat away and dissipates it into the outside air. The fan motor is the part that actually powers...
Symptoms of a Bad or Failing Cooling Fan Resistor
Common signs include the engine overheating, cooling fan only working at certain speeds, and the fan never turning off.
How Long Does a Cooling Fan Resistor Last?
The purpose of the cooling fan resistor is to remove heat from the engine’s coolant and from the A/C refrigerant. The resistor does this by drawing air through the radiator and...
Symptoms of a Bad or Failing AC Fan Control Module
Common signs include cooling fans running for a long time or not at all, as well as weakened air flow. Without fixing, your car may overheat.
How to Replace a Cooling Fan Resistor
The cooling fan may not work at all speeds if the resistor is broken. If the engine overheats or the fan never turns off, the resistor may be faulty.
How Long Does a Fan Clutch Last?
One of the most important parts within the cooling system of your vehicle is the fan clutch. It’s not a part that comes up often, as it’s usually pretty consistent. However, if...
How to Replace an AC Condenser Fan
AC condenser fans need to be replaced when the air conditioning stops running. If the AC fans don't work when the car is on, the fan relay may be bad.
How to Replace a Fan Clutch
A fan clutch controls the car engine cooling fan and operates on temperature. It's mounted to the water pump and can cause overheating if it's broken.
How to Replace a Radiator Fan Motor on Most Cars
The fan motor on the radiator fails when the engine overheats and the fan does not activate. This means that the coolant cannot cool the engine well.
How to Replace a Condenser Fan Relay
A condenser fan relay operates the fan that removes heat from the engine. If faulty, it will not allow the A/C to blow cool air or function at all.

Related questions

Question
2003 honda odyssey cooling fans don't turn on with AC, ac works while driving and shuts off when sitting still
If the fans are not working properly and consistently to cool and condense the refrigerant in the condenser, pressure in the system could rise high enough to trip the high pressure cut off switch, thus accounting for the compressor shut...
Question
Electric Cooling Fan Remains On Even When Car is turned off
The radiator fan will be controlled by the engine ECU (electronic control unit) through a relay. The relay is most likely your problem. When the fan shuts off, it can cause a small arc on the relay points that will...
Question
My car cooling fan works for a few seconds when I turn the car off, not on when the car's on. Is the temperature sensor bad?
If it doesn't run for more than about a minute, that could be a normal situation. The fan is triggered by temperature at the cylinder head, and when the engine is off and the coolant isn't circulating, the heat rises...
Question
My fam stays on after I turn the car off and it runs hot in 15 minutes what should I do
Hello, thank you for writing in. The engine cooling fans are known to stay on when the engine needs help cooling down. While we cannot rule out the fans just yet, you want to check for the other possible causes...
Question
How long does it take to repair fan clutch
The fan clutch on most vehicles take less than an hours labor to replace. You would need to supply the vehicle year, make and model with engine size to get a more accurate labor for this job.
Question
Radiator fan running max frequently
The fan circuit has a relay, switch contacts, and a temperature sensor. There may be other circuit components as well. If the fan is coming on when it is not supposed to, there is a fault in one or more...
Question
08 jaguar blows cold air but while at a stop starts blowing semi cool air had service no leaks told it was fans not working / but
If the condenser fans are not working properly, the effect that you are describing (delivered air not as cold at idle) will occur. The condenser fans provide the air flow that is necessary to remove a lot of the heat...
Question
How much do you charge for a water pump and clutch fan
Hello, thank you for writing in. The water pump is a very common place to develop leaks. Leaks in that area are a good indication. You can check the hoses and their connections to make sure they are secure and...
Question
Why does my radiator fan not come on soon enough in my 2004 Chevrolet Cavalier
Hi there. If the fan does not come on at all by itself then there is a problem within the electrical circuit. It can be a relay or a control issue from the computer. If the fan is coming on...
Question
My radiator fan is shaking and rattling.
Hello, thank you for writing in. The fans can cause the vehicle to shake and vibrate. If you suspect the problem lies with the fans, start there. Check for any broken fins, extra noises, debris, or other obvious signs of...
Question
2001 mitsubishi galant 4cyl. running hot at idle only. prior have replaced water pump, radiator, temp. gauge, coolant overflow. St
Hello, thank you for writing in. Everything that has been done was valid in trying to trace down the issue. You likely did your vehicle a lot of good in updating those cooling system components. With that being said, one...
Question
2004 ford focus wagon overheats randomly then kools
Hello, thank you for writing in. The vehicle may be having issues with the components you already replaced, or there may be another problem. At this point, you will want to look into the engine temperature sensors, the radiator cap,...
Question
My car is running HOT and my reduce engine light comes on every now and then. I have an 04 grand prix.
Hello, thank you for writing in. Depending on what testing the mechanic did, he may very well be correct. The computer intakes all of the information from the various sensors and controls the fans. If the engine temperature sensors, fan...
Question
my car is overheating i checked the fans and they dont kick on. only time they go on is when the ac is on
Hello, thank you for writing in. When diagnosing a fan problem like this you must consider that the fans are technically working. They are simply not being switched on when they are supposed to. You may be looking at a...
Question
98 automatic altima: rad fans wont kick on unless ac is on.
If the car only overheats when it is sitting still, the fans not coming on could be a factor. But if the car overheats while you are moving down the road, than there is more problem than just the fans....
Question
My coolant fan don't work why when it's in good condition
The fan is operated by a thermostatic switch and a relay or control unit, so there are several components in the chain that could fail. Diagnosing a fan that isn't working is a matter of doing a point to point...
Question
After running a few miles,with my Ac on my temperature gauge goes to Hot,and my car overheats..When the Ac is on,the car doesn't o
The engine cooling electric fan is most likely not coming on when the a/c is on and the compressor may of overpressurized and locking up and smoking then leaked out freon. you will need to check to see if compressor...
Question
My a/c blows warm when switched to drive. What can cause this?
Hello, thank you for writing in. There is a chance you may have a vacuum leak. You will need to check for them physically, or have a technician do so. Typically the vehicle has more power when at higher RPMs...
Question
My Nissan Frontier truck is overheating. The smog technician said it needs a new thermostat. Would you like to take a look, give m
Hello, thank you for writing in. If the overheating is only happening when you are at a stop, then you want to focus on the water pump and the cooling fans first. While the thermostat can cause overheating when it...
Question
What could be the cause of overheating on a range rover rediscovery 2001?
Hello, thank you for writing in. Diagnostics on the cause of overheating need to be done before a quote can be prepared. The easiest way to find out what is wrong is to have a pre-purchase inspection done before you...

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