Question about 1981 Chevrolet Corvette
I have a 1981 vette, serviced the a/c system but still wont get cold. what should the low and hi side pressures be, still have the R-12 system in it. shouild I deplete the a/c system and change it over to the R-134 system?
If you haven't found a solution yet, you may want to trace through the system and check on your hot water cut off valve. The 81 Corvettes have a special valve between the coolant line and the heater core that has to engage to stop the flow of hot coolant when the AC is turned on. I don't have a picture of one, but if you do a search on ecklers.com, it is easy to find and recognize. Another option would be to check the vacuum manifold switch and tension cable in your heater control. If the cable is seized or you hear a hissing from the vacuum manifold, your controls may not be engaging fully.
Posted on Jun 24, 2009
Tell me more how much did you put in the system? and did the compressor ever kick on ? the compressor is turned on and off by a pressure switch on your dryer .. when your full or at right level with your freon the compressor will kick on .. let me know if this helps any .. you might not have quite enough in there yet to turn on the compressor.. usually empty takes about 3 cans to fill the system.. thanks Jerry
Posted on May 13, 2009
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Posted on Jan 02, 2017
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