Subject: air-conditioning
Question: I own a 1993 Mit. Eclipse with a 2.0L and a auto-trans. with a A/C compressor that does not get power from the A/C relay. If you jump the harness at the relay the compressor will cut on and blows cold air. I can't find the right information in repair manuals from auto-parts stores.I think maybe a pressure switch or something is not tripping the relay,but my manuals don't tell where to check for voltage to check everything.I bought the car with a bad motor, and replaced it with a low milage salvage-yard motor, and the A/C is the only thing I can't get to work. I would like any information to help getting my car cool.
Thanks,
Mark
Answer: Mark,
If you have a Haynes or Chiltons manul, but neither of those have information for troubleshooting your A/C, the best thing to do is get a factory service manual. Those are pretty expensive if you try to get one from the dealership, but a quick search on eBay may reveal some for just a few bucks.

You can get information on buying a backup factory service manual CD from this site:
http://www.ecanfix.com/~manualcd/

That should have all the information you need.
Good luck!