Automotive Air Conditioning Information Forum

Hello,

I have Audi A6 from 2006. When I rev the engine past 2000 rpm the AC stops working. If I rev the engine again I hear a hissing sound and the AC starts working normally. I made a video with live data. As you can see from it, the gas pressure drops immediately after I rev the engine and the evaporator temperature rises rapidly. Any ideas what is causing the issue.

https://www.youtube.com/watch?v=RmzufjhHgRM

Your computerized stuff is interesting, but first ensure that the AC clutch is not disengaging when you rev.