A cooling fan module helps
to maintain a constant supply of fresh air into the cabin of a car by controlling the blower that supplies the air
. When cool air is produced in the car's A/C system, the cooling fan module blows it into the car maintaining a fresh supply of air even when the windows are all rolled up.
Where is the radiator fan control module?
The cooling fan control module in your vehicle is located
at the front left of the engine compartment next to the radiator
.
How do I know if my fan control module is bad?
- Cooling fans running for a long time. The cooling fans under the hood of your car are designed to keep the components of the system at a lower temperature. …
- Cooling fans not running at all. …
- Weakened air flow.
What are the symptoms of a bad cooling fan relay?
- The engine runs hot or overheats. …
- The cooling fans don't work. …
- The cooling fans keep running. …
- Warning lights. …
- Poor air conditioning performance. …
- Swapping Relays. …
- Measuring the Relay Coil's Resistance. …
- Listening for Noises.
How much does it cost to replace a fan control module?
If the fan controller module needs to be replaced, the average cost is
between $250 and $400
, again depending on your vehicle module. The most expensive repair, outside of replacing a seized engine, is the radiator fan motor.
How do you test a cooling fan module?
The quickest way to tell whether or not the electric fan(s) are working is to
start the engine
. Then, let it reach normal operating temperature and then turn the A/C on. The cooling fan in the engine compartment, should turn on to pull air through the radiator and A/C condenser.
Should radiator fan turn on when AC is on?
Both radiator fans should always run when the AC compressor is engaged. To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature. Most fans should come on when the coolant reaches
about 200 to 230 degrees
.
What controls the radiator fan?
On most modern cars, the cooling fan is controlled by
the Engine Control Unit (ECU)
which gets a signal from the coolant temperature sensor. If it's not working, the fan won't turn on when it needs to, which means the engine might overheat.
Does the coolant temperature sensor control the fan?
The sensor works by
measuring the temperature
that's being given off by the thermostat and/or the coolant itself. The temperature is then sent to the on-board control system. … As the control system receives the temperature from the CTS, it may trigger the cooling fan to either shut off or turn on.
How do you diagnose cooling fan problems?
- Cooling fans do not come on. The most common symptom of a faulty cooling fan motor are cooling fans that do not come on. …
- Vehicle overheating. Another symptom of a possible problem with the cooling or radiator fan motors is the vehicle overheating. …
- Blown fuse.
When should the radiator fan kick on?
Your radiator fan should kick in at
about 200 degrees Fahrenheit
. If you notice your vehicle is overheating or at the very least running hotter than it normally does, listen for the fan to see if you can hear it.
What are signs of a bad thermostat?
- The temperature gauge reads high and the engine overheats.
- The temperature changes erratically.
- The vehicle's coolant leaks around the thermostat or under the vehicle.
What are the symptoms of a bad thermostat?
- Leakage from the mounting surface. Appearance: Seepage, drips or large coolant bleed marks on or around the mounting surface or on the housing. …
- Rust and corrosion. Appearance: Rust and corrosion on the surfaces of the thermostat. …
- Deposit build-up. …
- Map-controlled thermostats.
Can you drive with a broken radiator fan?
As such,
you should never drive your vehicle if the cooling fan
isn't working even though you can. … If the radiator does not have cool air blowing on it constantly, it will overheat eventually, so you'd need the perfect combination of weather and traffic to drive effectively without a radiator fan.
Can low coolant cause fan to not work?
If your coolant level is low, then it might not feel as if your car is getting cool, even with the radiator fan turned on and working. If you don't replace your coolant level when it's low, then this can cause the engine
to become seized
.
How much does it cost to fix a cooling fan?
As one of the more expensive car repairs needed (not including the replacement of a seized car engine, obviously), the replacement of the radiator coolant fan could incur about $128 to $162 in labor costs and around $465 in parts. So, total radiator fan replacement cost could be anywhere from
$592 to $627
.
