1993 a/c compressor run and kicks out

We have a 1993 caravan that is having a/c probs. When you first start it up the a/c will run for about 3 min @ an idle. Then it will quite running, completely. Check the r-12 and levels are fine. Will not run when you rev it, but when you are driving down the road it will start working, but then when you stop at a light, it will quit again. Have replaced the relays in the system. It has the 3.3, and can not find a wiring diagram for the thing worth anything. Anyone have any idea.

Adam

There is a great A/C forum called www.aircondition.com.
Post your question there.