1997 Pontiac Grand Prix 6 cyl Two Wheel Drive Automatic 130000 miles
The motor only runs on High (5) but even then it takes 20-15 seconds or more to start. It will not run on other speeds at all however earlier on, it would run on slower speeds but only after driving for quite a while.
I've tried a new motor with same strange results. The resistor module seems OK because I find around 12 volts at blower wires on High as well as the lower speeds ! The relay clicks when turning the blower switch on but when in High, the relay returns to "off" or at least to same condition as when switch is off.
I'm an electronics tech but have no diagram for the involvement of the relay side. I see two other relays and a couple of IC's on the same printed circuit board.
What may be the cause of this situation? Thanks!
have the same problem?
Sunday, October 26th, 2008 AT 3:15 PM