Quoted From risacher:
Update- The cooling fan worked on the compressor side of the car, put the manifold gauges on the system and the low pressure was still kinda low, high side was normal. Decided to replace the dryer, high/low switch, evaporator coil and the expansion valve. The system works great, but occasionally it stops blowing cold air and I shut it off and wait. Then it starts working again? Perhaps it is the compressor relay going bad?
To answer your questions, I did not do the repair, but had a mechanic I know do the work. The low pressure side was around 14 psi, and the high was normal pressure. He added some freon and the low side went up to around 30 psi. The air worked for a couple hours then no cool air. Decided to replace the dryer, high/low pressure switch on the dryer, evaporator coil and the expansion valve. The air runs a lot longer than before, but still cuts off later on in the day. The air temperature is mid eighties. Both fans work and when it stops blowing cool air, the compressor is not turning. I shut it off on the dash and I continue driving. About 20 minutes later, I hit the on/off switch and it works!! Could it be a relay? My mechanic and I thought it was icing in the beginning, but the evaporator coil and hoses were not iced up. Any other thoughts?