2000 Audi Quattro

DANNYBARN

MEMBER
2000 AUDI TT
5 CYL
AWD
AUTOMATIC

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?

5 Replies

FIXITMR

MECHANIC
9,990 POSTS

Have you added your own freon or done any other work on system?

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Monday, August 22nd, 2011 AT 4:48 AM

DANNYBARN

MEMBER
9 POSTS

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?

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Monday, August 22nd, 2011 AT 2:34 PM

FIXITMR

MECHANIC
9,990 POSTS

Do you have the equipment to do some testing? Does the compressor run(clutch engaged) at all over 2000?

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Monday, August 22nd, 2011 AT 5:58 PM

DANNYBARN

MEMBER
9 POSTS

No, I don't have any equipment like that. Any ideas as to what would cause this to happen?

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Tuesday, August 23rd, 2011 AT 1:41 AM

FIXITMR

MECHANIC
9,990 POSTS

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.