Radiator Fan Quit

As it happens there are many things that can go wrong so lets look at some possible issues that can affect the working of radiator fans starting with.

Ceiling fan vs ac. If this clutch goes broke the fan wont work. Moreover the fan belt could also be the issue. If this burns out or fails youll need to replace it.

The assembly usually has only three components fan motor thermostatic or thermo switch and relay. In older cars the fan used to work with the help of an engine. If everything else seems to be fine the fan clutch is the most likely cause of radiator fan failure.

How to inspect and repair a cooling fan thats not working. It is the usual wear and tear over the years that may cause the springs in the clutch to corrode or even burn out. There are springs within the fan clutch that can wear out or corrode over the years.

The relay however has direct power to one side the same as a light switch. This was made possible through a belt that derived power from the engine. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off.

If you detect zero then your relays power pins have stopped working and you need to replace the relay. If this belt broke your radiator fan would stop working completely. Pros couldnt find anything wrong.

The computer looses power with the key off and the same applies to the coolant temperature sensor. What would happen was a rev up on the fan so it was really loud and the monitor wouldnt come on and id have to restart the computer. Replacing the relay could fix your radiator fan from having stopped working.

So what can go wrong. How to repair a cooling fan in your car diy with scotty kilmer. If the fan is not working these units or the wiring to them may be at fault.

With no airflow through the radiator it will soon warm up to the temperature at which the fan should cut in. Whenever the engine would start the radiator fan would start spinning. Make sure that engine temperature reaches about 2200f 1040c and the radiator tank temperature rises accordingly meaning hot coolant is being transferred to the radiator.

However there are several components that could cause the radiator fan to stop working when they fail even though the fan itself may be in perfect working condition. Reasons why your radiator fan isnt coming on. The fan clutch is the assembly that holds the radiator fan to the engine and makes it turn.

The computer sends power to the relay to activate it and turn the fan on.