Here is the back story. My a/c went out completely in 93 XJ with the 4.0L, nothing worked, just hot air. I had it diagnosed by a local reputable shop and was told that the compressor had disintegrated and that there were metal shavings throughout the system.
So, I got the bright idea that I could change out the whole system and fix it myself. My buddy and got it all done after about 3 weeks of working on it on our spare time. Our biggest conumdrum was what the D and S meant on the compressor. After some research, a phone call to the dealership, I was told the the D was for discharge and it was the high side and that the S was for suction and the low side. After all lines were hooked up, PAG oil put in the system, and R134a put in the system we figured we had it licked.
But no , For some reason the compressor does not want to kick on. Remember this is a new compressor. We jumped the compressor and are able to get to engage and work but hooking up to the OEM wiring does not work.
Today I changed out the relay under the hood and nothing happened. I am stumped. Any ideas are appreciated?