Auto Air Conditioning & Heater Repair: heater, little doors, compressor clutch


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i have a 1985 camaro.  when I turn on the heater, the fuse blows out within a few seconds.  how do you troubleshoot this?


thanks
Answer -
Unplug the blower motor and see if the fuse blows >

What work af ANYKIND has been done on the vehicle prior to this problem ?.

You can buy at most auto parts stores what is called a SHORT DETECTOR, They ru about $300.00 But they are well worth the money.

10/22/04 Prir to this problem I installed a rebuilt alternator, its charging okay.  I lost my keys so I replaced the ignition switch on the column. I put in a new heater core but did not disturb wires. I noticed that the heater is stuck in the defrost mode. When I move the electronic switch the little doors don't move.  Oh, and I disconnected the fan and it blew yet another fuse...
autohelp
Answer -
What other components SHARE this fuse that keeps blowing.?.

10/24/04 I looked at the wiring diagram again yesterday and saw that a light green wire goes out of the heatr control where the power goes in. So I disconnected it at the pressure sensor on the a/c unit.  The fuse did not blow this time. what do you think of this?
autohelp

Answer
I don't have an electrical schematic for your particular vehicle, but the GREEN wire usually goes to the LOW pressure switch mounted on the receiver/drier (accumulator) then to a relay then to the compressor clutch.

Unplug the A/C compressor 2 wire connector at the FRONT of the compressor and see if the fuse still blows.

If you can e-mail me that electrical schematic I can tell you exactly what to look for.

e-mail to:

meperganfortis@msn.com


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