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Old 05-11-2013, 02:06 AM
alabbasi alabbasi is offline
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Join Date: Nov 2004
Location: Dallas, TX
Posts: 5,135
Quote:
Originally Posted by vandor View Post
Tried charging the AC (has been converted to r134a and has all new hoses) and the compressor clutch started slipping.
I wonder if it's adjustable. It's a GM compressor, right? Was this the R4?
Also the condenser fan never came on, anyone know where it's relay is? I'd like to wire it so it's always on when the compressor is on.
Thanks,

Csaba
You probably overcharged it. R134 runs at a higher pressure then R12 so less volume is required. Did you use gauges or just shot a couple of cans into it?

The compressor is a Frigidaire / GM A6 compressor and is common to many GM cars from the 60's and 70's. You can get rebuilt ones for under $120 at the local parts places.

There should be two wires going into a pressure switch on the dryer. If you connect them together using a GM style fuse, it should engage the fan. I'm not sure if you can set the fan to fire up every time the compressor starts, but you can probably rig it to run all the time which is just fine for the summer.
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With best regards

Al
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