How to Determine if your Audi is Actually Short of Refrigerant

Kneale Brownson knealeski at
Sat Jul 5 14:38:25 PDT 2008

On my 200q20vs, there's a low pressure fitting on the front of the return manifold on the compressor.  Black cap.  That's where I've put in refrigerant.
Fred Munro <munrof at> wrote:
  You've connected to the high side adapter, as indicated by the lower
pressure when the compressor cycles off.

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