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Truck Heater Blower Won't Work on High Speed

Category Repair Advice

The blower on my '91 Explorer was only working a little bit. It had all the signs of the resistor going bad, so I replaced the resistor. Now the blower works at the lower speeds, but not at the high speed. What might the problems be?

By William

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January 14, 20140 found this helpful

I'm pretty sure it's the wiring harness. I had a Chevrolet Colorado with the exact issue and it was the wiring harness. If possible you could take to a garage that specializes in electrical issues and have the work done much, much cheaper than dealer. Hope this helps.

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