So my radiator fans are not turning on making the car overheat periodically. I have bubbles in my system, flushed the radiator completely. During the "purge" part the fans never come on, just went and beat on the car pull over rev the car some more still nothing (heat on normal operating temp). Once the ac is turned on the fans turn on, meaning they do work. Im thinking either:
- fan switch
- thermostat

I havent checked the fuses yet, not sure exactly where the ones regarding my problem are. Need to get this fixed! Thx ahead!

 

Anybody?

 

If they come on together when the AC is turned on, it sounds like you have a wiring problem. They should be controlled independently: the radiator fan should come on with radiator temp, the AC fan should come on with the AC regardless of radiator temp.

 

Hmm interesting. They do both turn on... Could it be a fuse? Ill look at the wires but dont know how the wiring would go bad, just put a supercharger on the car not too long ago. Does the water pump wiring have anything to do with it??

 

I have a similar problem. I just did air pump delete and a/c delete. No neither of my fans come on with or without the a/c on. I disconnected the switches to move the radiator a bit so I could pull the a/c radiator but everything looks okay visually. Any opinions?

 

jump the thermo switch and see if the fans come on.

 

Thanks. They came on so I guess I have to replace the switch. Never done this before. I read that coolant will leak when it's changed so do I need to top that off once I'm done?

 

On my 06 s2. I ordered switch for rad and one on back of intake, fan works good. Jumping switch on ap2 didnt do anything.