so i was wondering if anybody else is thinking what im thinking......in order for my fans to work at all, i have to ground the relay, meaning run a wire from the ground wire where the relay plugs in, to a ground. i really dont want to buy another set of relays if it wont fix the problem. so could this be a relay issue or a ground? Also, every once in a while i get a EGR code, it onyl happens every now and then, but when ti does the car will idle higher, and kick back down if i give it some gas. vacuum issue maybe?? i mean the motor has 120,000 on it, so i dont expect it to work perfect all the time, after all it is a camaro, its tempermental :-)

 

On the fans, they are triggered via ground. Depending upon year, some go by a sensor in the block, some by the engine computer. So your relay is most likely still working it is the trigger feature that is having issues.

 

its a 90 iroc tpi......bought the car used, had these issues, just tired of having to either have the fans running all the time, or having to manually switch them on, memory isnt so good sometimes lol