Join Date: Mar 2002
Location: Bonaire, GA., USA
I have a '89 Z28, TPI 5.7 liter.
Both cooling fans will not come on no matter how high the temp or if the A/C is on or not. I've replaced the coolant fan relay (and a few others while trying to find the right one) and the coolant temperature sensor--no help. The fans work--I connected them straight to the battery as a test. Is it possible the Electronic Control Module is malfunctioning causing this? Or just a short or open somewhere? If that is the case shouldn't I get a Check Engine light indication?