AC Condenser

OK, I changed out the old condenser (10 minute job no prob) and changed out the filter. pulled a vacuum and added 2oz of oil. Started the truck and put it on max ac full cool. Added the 134a to 2.4 PSI on the low side. The compressor was clicking on and off for a few minutes, then stopped. I still have no cool air blowing and no pressure on the high side, but I still have the 2.4 on the low. Does this mean that the compressor is bad or am I missing something? Rich

Sounds like you could have a blocked orifice at the evaporator, as one possibility. As a compressor test, you could hook up your gauges, fire up the truck, turn the A/C on, and apply 12V. directly to the A/C clutch (unplug it first, of course). You should see some movement on the gauges, even if there is a clog. Try throwing some freon gas on the high side and see if that makes a difference. You might want to check your local library for a book on auto A/C's- that will give you all kinds of troubleshooting tips. Tom F.

filter/dryer

After you charge the system properly, take the jumper off the clutch and hook it back up properly. If the A/C doesn't work, you've (more than likely) got a bad switch somewhere, either your switch inside or one of the pressure switches (not sure if yours has both high and low pressure cut out). Tom F.

troubleshooting

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