When my Audi is at idle, the a/c is really cold. But when I drive it, once I get over 2,000 rpm's, the a/c gets warm. When I stop at a redlight, it gets cold again. As soon as I speed up, the a/c gets hot, when I stop or slow way down it gets cold; this cycle continues over and over.
A "weekend" mechaninc friend of mine said that the orifice tube may be stopped up?
Have you added your own freon or done any other work on system?
August, 22, 2011 AT 2:34 PM
No, haven't had the car long, I have not had anything done to it, or have not added anything to it on my own either.
Any other ideas?
August, 22, 2011 AT 5:58 PM
Do you have the equipment to do some testing? Does the compressor run(clutch engaged) at all over 2000?
August, 23, 2011 AT 1:41 AM
No, I don't have any equipment like that. Any ideas as to what would cause this to happen?
August, 30, 2011 AT 1:51 AM
Let car run with hood open and watch compressor clutch while someone raises rpm and see if it kicks off. If so, could be a pressure inbalance tripping pressure sensor. The best thing to do would be to take pressure readings.