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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.
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 Buy a Good Quality Cooling/Radiator Fan Motor
Fans are necessary to keep the components under your car’s hood from overheating. Excessive heat can cause warping, melting, and other damage, not to mention the additional energy suck. The radiator...
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
my heat gauge goes up when idling then comes back down when driving
It sounds as though you are probably having an issue with the cooling fan(s). The primary function for the cooling fan(s) is to push/pull air through the radiator at low speeds, or at a stand still. When stationary, there is...
Question
what needs replaced?
The erratic getting hot and cold is most likely from the thermostat is stuck or sticking. You should also check to see if the fan clutch is locking up correctly and may need to be replaced also at the same...
Question
Do I take off the fan to change my alternator belt?
The fan is the first thing to come off. The fan clutch is mounted on the water pump by a big nut. The nut has reverse threads, so it is loosened by turning CLOCKWISE rather than the normal counter-clockwise. You...
Question
Radiator fan scrapes against shroud, car won't idle.
Hi there. The cooling fan could be coming apart hitting the shroud or the shaft could be bent. The stalling of the engine could be caused by the computer shutting off the engine due to a vibration that the knock...
Question
When replacing my fan clutch should I change my cooling fan to a flex-a-light and get a new flex-a-light clutch?
Hi there. It is best to always put on the OEM parts that are required for the vehicle. However, you can get a flex-a-light clutch fan for your vehicle as long as it will bolt up to your water pump...
Question
Check engine light is on.
First of all, a shop cannot let a vehicle leave the parking lot with the engine light on without your signature saying that you intend to leave with the light on. Second of all, the light might have been on...
Question
engine fan noise
The engine should always operate in the "normal" range as shown on your temperature gauge. If the temperature is too high, shut down the engine as overheating can have disastrous consequences (costly repairs). If too low, that is not an...
Question
what should I do, I have a 328i Bmw 2008 . ( when I drive in the morning in 5 minuets the ac fan starts running, which not normal
If you are referring to the A/C condenser fan ahead of the engine compartment, if that fan is operating uncommanded, that means there is a circuit or sensor failure. However, the auto electric technician would have to look at the...
Question
Cooling system aux fans not working 2006 VW Jetta
Hello - in addition to the coolant temp sensor that triggers the cooling fan operation (so does the AC switch on most cars), the fans utilize one or more relays that route the power to the fan motor itself. Since...
Question
overheating and engine is shaking.
The condition that is causing the electric fans to come on selectively would be caused by the coolant sensor / switch. The sensor / switch is loosing contact connections causing the connections to the fans to cut off making the...
Question
My engine management light is on all the time and so are my engine fans.
Hello. The engine fan coming on and the temperature gauge spontaneous movement is more than likely caused by the same issue. It is possibly a wiring issue with your coolant temperature sensors. A technician will have to check the wiring...
Question
Loud clanking noise between front belt and fan. Fan appears loose 2003 Mercedes ML350
Hello - while it is possible that there are simply loose nuts/bolts for the fan, it is most likely the fan clutch is failing, hence the wobbling fan. I recommend a fan clutch replacement as soon as possible, performed by...
Question
Electric Windows and entire fan unit stopped at same time.
Any time electrical systems tend to work and not work at times would be caused by a loose wire. Check the ground wiring from the cab to the chassis and particularly around the parking brake lever area. A loose wire...
Question
The fan clutch will not disengage.
Hi there. The fluid that is inside the fan clutch has leaked out and is no longer keeping the clutch is a slipping mode until it gets hot. I recommend replacing the fan clutch assembly. If you need further assistance...
Question
I want to know if it is possible to replace the radiator and fan of the 2012 Chevy Cruze with a 2014 model type?
Hi there. The radiators on both vehicles are the same but the fan shroud on both vehicles are different. The fan motor, on the other hand, is the same for both of the vehicles. I suggest replacing the radiator with...
Question
Fuse 33
Hello, thank you for writing in. The fuse keeps blowing because something in the circuit has failed. Others have experienced the same issue with different errors in the circuit. This particular fuse is related to the radiator cooling fans. The...
Question
My 1998 Buick Park Avenue only runs hot when in traffic or just idling. What's the cause of it running hot?
Either the cooling fans on the radiator are not working properly or the radiator is plugged up to where there is a restriction when the engine's water pump is running at a slow speed. If you suspect that the radiator...
Question
When I start my car, the fan jumps on very loud for about a minute to a minute and a half. What would be the reason?
There could be an electrical wiring issue with the cooling fan from the cooling fan to the cooling switch / sensor or the thermostat could be sticking on causing the fans to blow harder as the engine may overheat until...
Question
Car will overheat if I don't have the fan on. When fan is off it doesn't come on to release heat from engine. So the fan is always on.
Check the wiring to the coolant temperature sensor and see if there is power to the sensor switch. If there is no power, then check the cooling fan relay and see if its clicking on. If there is no clicking...
Question
A 2000 Elderado blows engine heat through the back of the radiator. It blows out the front of the grill.
Hi there. Check to see if the fan motor wires are reversed. If the wiring was reversed, then the fan blades will turn the opposite direction that they are normally operated. If the wiring is hooked up properly, then the...

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