Quote:
Originally Posted by gmeteer
This may be a result of a failed bi-metallic switch in the a/c system. It is found in the intake port of the evaporator, located in the footwell on the passenger side, up in the front bulkhead or "firewall". This controls the blower switch (low, medium, hi speeds). It is also called the blower resistor. I'm not expert for sure, but I seen this fail on several cars in the past. It is a real head-scratcher, and was diagnosed for me in the dealership.
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+1 on the Bi-Metalic Switch, check the contact to insure there is no corrosion there. Not sure how to check if the switch is bad but that switch does control the speed. It sits right next to the water drain off and if you live in a rainy climate, it could get wet.
I've sealed that area except for the drain for extra measure.
After that I would check the relay in the smuggler's box. My relay was buzzing like crazy and tripping my fuse. I removed and tapped on it. apparently it was getting stuck in there. I ordered a new relay but the buzzing and fuse tripping did not re-surface. All COOL Now
