1992 Jetta GL 8v Digi 2 ce2
Everything works good when the air conditioning is turned off. When I turn on the A/C the compressor engages, and bogs the motor down to 300rpm, and sometimes stalls. It doesn't matter if the engine is cold or hot. The AC blows ice cold, previous owner claims it is still on R12.
I have replaced plugs, wires, rotor, cap, coil, fuel pump, vacuum lines within the past 1000 miles and have cleaned the ISV, nothing has made a difference is this issue.
Next on the list to do is ground wires and new o2 sensor.
The wires on the SD508 Compressor look to be connected correctly, and unmolested, along with noise free operation.
What else could it be
Should I try to replace the ISV?
I would think that if the ac compressor was binding up, the belt would slip.