ok, i followed the tech article for the manual fan switch. worked correctly for a few days. now, with the key in the on position, the switch works fine. turn on the fans are on, turn off the fans go off. when the car is running the fans stay on all the time reguardless of whether the switch is in the on or off position. what could be wrong?

 

If you accidentially disconnected the high pressure safety switch on the ac line that goes to the condensor, it will stay on all the time. Also, if the wire coming from the fan switch on the engine (or the manual one you added) Is shorted out and touching ground, it will have the same effect.

Matt

 

well, what i did was...i was grounding both relays at the same time. with the ignition on...it would work right but while started they were on all the time. i took the grounding wire from one relay and now they work like intended.

 

Great to see you found it. Maybe it was seeking ground through the second relay somehow when the car was running.

Matt