I have a 94 GSR. I put a used motor in last year from a 96 GSR. I replaced the compressor with a reman. unit. I went to charge up the system and jumpered the pressure switch,the compressor would not engage. I isolated it to a bad compressor clutch relay( When I tapped it with a screwdriver the clutch enaged)
I replaced the relay and now the clutch stays engaged even when the ac is switched off in the car.
Any ideas?

 

Anybody?