[tdangle]

My rebuild consisted of replacing all the hoses and 0-rings and dryer, checking the POA Valve which is at 27 psi (might be a little high) flushing the condenser and evaporator. Made sure the expansion valve bulb is clean and tight on the tubing, new insulating tape. Pressure tested the condenser and evaporator with compressed air. pulled a vacuum for couple hours and then it held the rest of the afternoon (3-4 hrs).

I didn't replace the compressor as it seemed to be holding vacuum. I did drain the oil and refilled with Ester oil before evacuating. Then charged with 3 cans of R134 (36 oz) It seemed to work good for a week. i decided to add a little more to bring it up to 40 oz. Worked even better! Don't know the temp of the air coming out as I don't have a thermometer. I did feel the high side was a little high at 325 and low at 42 about 85 degrees outside. Sat for another week and poof, no more hot air. gauge readings low both sides. I just want to make sure its the compressor leaking before I replace it as I learned along time ago just replacing parts can become quite costly vs only replacing what is really needed.

Stocker: Yes the compressor is turning (first thing I checked)
Leddzepp: I hear what you are saying. I sure didn't want to find R12 fill it and then have it leak only to start over again. I figured if I charged with 134 and it didn't work for me, but held OK, then I would consider trying to find some R12 to refill with. I've looked on CL and all I see is $40 a can or so. needing 5 cans is fairly expensive to test the system with.