91 z24 blowing fuse

[gardnerr06]

I've got a 91 cavalier z24 that keeps blowing the HVAC,heater and A/C fuse.As soon as I replace one,the new one is blown.Any ideas what might cause this?Thanks.

[gardnerr06]

Oh yeah, The fuse is blowing as soon as I turn the ignition to the run position, before the car starts. Everything else is working fine.

[jj76ta]

Try to disconect the blower motor and then replace the fuse. if it blew then there is a dead short. If it doesn't blow after the motor is disconected then it is the motor.

[vamc]

Look for ANY crimped wires by the ecu and other places.

[gardnerr06]

Thanks, I will try that and look around at the wiring.

[vamc]

Let us know what you find.

[jakegday]

if your heater/ac is turned OFF when you turn on the ignition, its not your blower motor. if that is the case its definetely a short, if its ever had an aftermarket stereo in it, i'd start behind the stereo

[gardnerr06]

Been looking and can't see any crimped or bald wires. How can I get the gear shift handle off? I,m trying to get a good look behind the heat/ac control panel, but the shifter handle is in the way.

[Cavalier2000]

auto or stick

[gardnerr06]

Auto, I found the pin in the front, looks like a big staple. I'm gonna look around this evening.

[Cavalier2000]

yea take it out and the pull up

[gardnerr06]

Well, I looked around everywhere I could see. Unplugged all the wires from the control panel and hooked them all back up one at a time to see when the fuse would go, but it never did. Put everything back together and all is working fine again, ...for now.

[gardnerr06]

and now i'm back to blown fuses. any suggestions?

[gardnerr06]

could one of the switches be causing this, like the blower or a/c switch, or the ignition switch?