AC Blows Cold Air Only When Driving 30 MPH or Faster
The AC on my 2008 2.0 L turbo now only works when I am driving at speeds of at least 30 MPH. When driving at slower speeds or idling, the AC blows warm air.
I brought car to two VW dealerships to have their service department diagnose the problem. When running diagnostic on AC system, it states that their is voltage to the compressor but the compressor does not turn on. The freon level is good and system has no leaks. VW suggests replace compressor, expansion valve, drier and condensor at cost of $2,225 but made no guarantee that problem will be fixed. VW technicians with whom I spoke do not know why the system works while driving at 30 MPH or faster yet blows warm air at slower speeds.
I would greatly appreciate any insights or suggestions before I spend $2K+ in the hopes that it will correct the problem.
Thank you for your assistance.