OK, I have an '86 442 with an L98 Vette engine in it. The AC pump is for the Vette and everything else is original to the 442. then
The AC clutch is wired as follows: Batt (+) starts at ignition, goes through climate control for AC on where it goes to the AC clutch, this wire splits to power the fan relay also. The neg(-) side starts with the original ground at right of heater box, goes through low pressure switch on the dryer, then through the oil pressure switch that closes (connects) when the switch sees oil pressure, then onto the other side of the AC clutch.
I talked to my mechanic friend, and he explained that the AC pressure switch will connect when it sees 50 psi, the pump engages and pulls vacuum down to 32 psi where it will cycle off.
When I put the engine in the car originally, the seals blew out of the pump. I replaced the seals myself, and those blew out as well. Before I put a new pump on, I want to be sure that this end is correct.
Can anyone see why this would have happened?
The AC clutch is wired as follows: Batt (+) starts at ignition, goes through climate control for AC on where it goes to the AC clutch, this wire splits to power the fan relay also. The neg(-) side starts with the original ground at right of heater box, goes through low pressure switch on the dryer, then through the oil pressure switch that closes (connects) when the switch sees oil pressure, then onto the other side of the AC clutch.
I talked to my mechanic friend, and he explained that the AC pressure switch will connect when it sees 50 psi, the pump engages and pulls vacuum down to 32 psi where it will cycle off.
When I put the engine in the car originally, the seals blew out of the pump. I replaced the seals myself, and those blew out as well. Before I put a new pump on, I want to be sure that this end is correct.
Can anyone see why this would have happened?
