Like Tom said, it sounds like a siezed compressor. If you had the system
changed over to R134 for R12, did they put more than 80% of the R12 capacity
in? If so, then the compressor would be overloaded. Regardless, sounds
like you need a new compressor. Try www.audiquattroparts.com or
www.acsource.com . Sorry.
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
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