My blower motor for my air conditioner doesn't work in my 1988 IROC. I checked the fuse panel and all the fuses are fine. When I start the engine and turn on the A/C, the A/C compressor clutch engages but no air comes through the vents due to a dead fan. The connections on the blower motor are conected and no wiring harnesses appear damaged.

I checked out both Chilton's and Haynes shop manuals and looked at the electrical wiring schematics. The Chilton's shop manual indicates that there is a blower motor relay. Where is this relay? I can't seem to find it. I do know where the fan, fuel pump, and MAF burn off relays are.

What else could be the cause of my blower motor not working?

 

Jump 12+ volts from the battery to the purple wire on the fan to make sure the fan motor isn't smoked 1st.

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Thanks for the advice. The blower motor is working fine again. I guess my IROC didn't feel like being tested so it started working fine again.

 

Thanks for the advice. The blower motor is working fine again. I guess my IROC didn't feel like being tested so it started working fine again.