I have a 1991 GXE. My AC fan intermitantly turns off and on. Once it cuts on it normally stays on until I turn the car off. Once it is working I can turn my fan off and on, so I think it isn't a switch problem. I think it may be a ground or a relay, but I don't have a clue where to look. I found one relay near my heater control, but I don't know what it controls. Any ideas on what it could be? Any suggestions would be appreciated.

 

I got some funny symptoms from my fan when my temp sensor went bad.