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BMW E46 2001 330i 4doors
The AC works perfectly fine as long the car is idling however when I drive it the AC temp starts climbing down then no cold air comes out unless I turn off the AC with ice-flake button then restart it again. It cools for a while and drops again.
I refilled the freon to the right amount by a mechanic but the problem didn't go away.

Any ideas would be much appreciated 馃槈
 

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E30M3 Race F10 535 R1150Rt M Coupe
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It can do that if the system is overfilled.
What is the pressure high and low side? At idle? At 2,000 RPM?
 
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