[QUOTE]Originally posted by bobterry99
[B]Your ignition switch is fine. I believe the most likely cause of your problem is a faulty expansion valve. This is diagnosed by measuring the high and low-side pressures of your A/C.
I have a gage... what should the two be reading? Also there are several places to read them. One in the radiator (grill area) one just beside the air cleaner. When I first put the gage on ( beside the air cleaner) it read near 200 psi (Two Hundred), then when I started the car it dropped to 18-20 psi and didn't change. I didn't try the high side yet.
Now for a good question, I've been told that over the winter the O-rings may have shrunk. If the R-12 has leaked out I would like to change to R-134A What is the proceedure for this? Must I change the compressor? Can I just vacuum the system and convert the Shrader valves (inlet, refill valves) with an adaptor then add R-134A??
Even if the expansion valve is faulty this means I need to vacuum the system in order to replace it and replace the refridge with some thing!!! I won't put R-22 in there as it's a propane base refridgerant and ill-advised.
T.I.A