Courtney
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.
Cheers!
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)

"Courtney Thomas" <ccthomas@joimail.com> wrote in message
news:3F41AB46.CF767E4F@joimail.com...
> Just had a new air conditioner put in last year and all seemed fine
> until last week when I turned the air conditioner on as usual, not only
> did the belt squeal loudly and start smoking but then killed the
> engine.
>
> What disaster has befallen me and how should I proceed. A neighbor has
> guages and a dryer that I could use, but what I'm requesting is not only
> a troubleshooting step-by-step but also; once I've gotten to the root
> cause, how should I then repair it ?
>
> Your time is most
> Appreciated,
>
> Courtney