Question about 2001 Chevrolet Cavalier

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2001 Cavalier 10 amp under hood fuse for the a/c keeps blowing. The a/c compressor, in-line diode and orfice tube have been replaced with new and system is up to proper charge. Both power and ground wiring to compressor appear to be good but. With the car sitting at idle the compressor appears to run with no problems, however when driving and as engine RPM increases, the under hood fuse continues to blow after a period of time. Any idea what could cause this?

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You have to find your short somewhere in the wiring it causing it to get hot

Posted on Jul 29, 2010


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Where is the orfice tube on a 2000 jeep wrangler

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My a/c stopped working. it blows air, but the fan nor compressor comes on. do you know what might be the issue. and does it have a metering device or is there an extention valve in the evaperator under the...

check to see if the ac is charged,if so look at the ac relay and the low presure switch they could be bad,the expansion valve is a rectangulr alluminum box loking item sticking out of the fire wall with two ac lines atached to it (ur low side switch usally is here or near by),,,if ther is not a block ther then this model has a liquid line with the orfice tube made into line ,/u have to replace the whole liquid line it cimes with orfice tube in it

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Unplug the power connector at the a/c compressor and see if the fuse still blows. If not, then with a dmm or vom test a/c clutch winding for short. If ok, then test clutch diode for short. The diode is usually mounted at the clutch winding, but I've seen Chevy's with a diode that plugs into fuse/relay block under the hood. I have replaced these so don't overlook it.

If fuse blows with compressor unplugged then first check circuit between compressor and a/c relay (power side) for a short. It's possible for the wire to rub a bare spot in the insulation along it's travel along the block, bracket or manifold to the compressor. If ok, then test from relay (winding side) back to switch.

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