Showing articles & questions for topic
fans

Related articles

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
Cooling fan continue to run. Replaced cooling fan switch and temperature switch, replace relays 1999 Honda
Hi there - yes, some Honda models (Accord) have a cooling fan control module, and some models have a timer for the cooling fan. This feature would allow the cooling fan to continue to run for a brief period after...
Question
BOTH AC FAN AND RADIATOR FAN NOT COMING ON
The problem you are describing likely stems from an electrical fault which would include things like a break in circuit wiring, bad grounds, relays, fuses, resistors, the fan motors themselves as well as the engine cooling temperature sensor. If engine...
Question
engine overcooling; engine fan always on!
Hi Alex....yes, that sensor could be a possibility but there are other components in the circuit as well such as relays (that can stick on) and, although not as likely, there are possible wiring faults that can cause continuous power...
Question
Car Overheating New Water Pump & Thermostat. Only Overheats On Highway .
You first need to make sure coolant is full. If cooling fan clutch is not locking up then it may be causing the overheating. You can test it by running the engine in park at 2000 rpms to see if...
Question
A/C compressor clutch does not engage, cooling fan does not turn on, condenser fan does not turn on, and ceiling light does not turn on.
Hi there. The air conditioning clutch could be not working for the refrigerant could be low or the clutch could be burned up. Check the air conditioning compressor clutch wiring for a voltage with the a/c switch on high and...
Question
Cooling fans will not shut off
The coolant fan switch helps to maintain the proper coolant temperature by turning on and off at specific temperature thresholds. When this switch is not working properly, this can cause the fans to come on intermittently, all the time (as...
Question
Car is making a noise while idling. It sounds as though a motor bike is nearby. What might it be and is it safe? 2000 BMW 528
Hello - the sound you hear is most likely the electric cooling fans coming on while the vehicle is stopped. The lack of airflow across the radiator while stopped or moving slowly causes engine temperature to rise, triggering the cooling...
Question
Failing fan clutch symptoms
What you described is happening is normal cooling fan clutch operation. When you first start the engine the cooling fan clutch will be in the full engaged position and may take a minute for the internal fluid to move back...
Question
Radiator fan very loud 2012 BMW X5
Hello - for virtually all modern cars, setting the heater/AC controls on any position that utilizes the air conditioning compressor (i.e. defrost), the auxiliary fan for the radiator is automatically turned on to increase airflow over the AC condenser coil...
Question
Why are the fans staying on when the car is off to where I have to pull the fuse?
The fans are controlled by a relay as well as a temperature switch and possibly timer(s). The relay may be stuck in the closed position and that would be the first and easiest component to test. If a relay tests...
Question
Engine wont reach operating temperature
The first thing to check is to see if the cooling fan clutch is working properly. Start the engine when it is cold and rev the engine up to 1500 rpm and listen to the cooling fan to see if...
Question
Where is the location of the thermostatic fan switch?
Hi there. The thermostatic fan switch is located under the hood, in the center rear engine area, below valve cover, and is mounted on lower driver side of engine block. The thermostatic fan switch turns on the electric fans when...
Question
Cooling fans is not working. Replaced the temperature sensor and the fan is still not working. Disconnect the sensor harness and the fans works.
Hi there. There could be an issue with the electrical wiring to the fans from that connect to the coolant temperature sensor. Check the wiring for any loose connections or any corrosion that could keep the sensor from making a...
Question
My engine fan is not kicking in, but my temp is between 80 -100. Is my thermostat bad because my check engine light just turned on
This can be caused by a number of things such a faulty thermostat, or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant temperature by turning on and off at...
Question
My 2001 Honda Accord keeps overheating
This can be caused by a number of things such as low coolant levels, a faulty thermostat, a clogged radiator or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant...
Question
If you was hooking up a OEM cooling fan that has only 2 wires and one speed but my car has a high and low speed, what wires would you hook up?
Hi there. Check the high and low circuits with a digital meter for a voltage reading. The low should have a lower voltage reading than the high. I recommend putting the wires on the high selection to prevent the engine...
Question
1992 Honda Accord cooling fans not operating properly.
Hi there. Your issue is the ECT sensor B is not closing the loop when engaged. There is power to the sensor A from the computer, but the sensor B is not connecting when the vehicle is running hot or...
Question
Car is overheating everytime i drive it for about 15-20 minz
Hello there, many faults will cause your 2004 Cadillac SRX to overheat after driving for 15-20 minutes. When head gaskets fail the most common signs are the coolant level dropping without visible leaks, white smoke from the tail pipe, and...
Question
RADIATOR COOLANT FAN DOSEN'T WORK IN COOLING SYSTEM CIRCUIT
The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...
Question
Heater fan seems to surge
Hello. Your vehicle does use a vacuum operated heater control valve to allow hot coolant into the vehicle's heater core so that warm air can be generated. If you hear an opening and closing sound then it may be possible...

Need a mechanic?

Our certified mobile mechanics make house calls in over 700 U.S. cities. Fast, free online quotes for your car repair.

Get a quote

Post a question and get free advice from our certified mechanics.


Ask a question