I recently bought a 90 Grand am LE that has a problem with the bower speed control not working on anything but high. I ohmed the switch out and it appears to be good. Where is the resistor asm located for this and could there be any other problem that is not obvious ?
Thanks, Steve m...
The resistor for the fan is definitely the problem. When they fail, the fan only works on High. I don't know where it is on your car, but you could buy one, then look for it. That's how I figure out where a lot of parts are, I buy one (or least ask at an automotive shop to look at the part), then look for it on my car. You could also buy a shop manual for your car or hope that someone on this list can tell you where it is, but the resistor is definitely the problem.
Steve m... wrote:
If you haven't found the resistor yet, I believe it's to be found on the ductwork leading from the blower to the heater core. Pretty much psgr. side firewall area. From the outside it'll look like a flat triangle/square with two screws holding it into the ductwork with an electrical connector. When you take it out there'll be a couple of loops of wire - more like a thick lightbulb filament than the resistor you're probably thinking of. I can email you a pic of the location on my wife's Beretta if you can't find it. IIRC most GM's of that vintage I've seen use a similar setup.
Ray email "myname" at rollingviolation.com if you need a pic.
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