'95 Sport 90 A/C Woes

[Mark W. Byrum, Jr.]

Just got a quote from the Audi dealer to replace the evaporator: $2000.  As far
as knowing how it fails, I was told that they charge the system, crank it up, and
put a refrigerant tester at the center vent discharge into the passenger
compartment.  When the tester activates its signal, they know there is a leak in
the evaporator.  And it could be nothing more than a pin-hole in a solder weld.
Apparently the evaporator is the only thing inside the passenger compartment, so
if the tester senses refrigerant, the diagnosis is made.  This seems logical.  I
just wish it wasn't buried beneath the entire dash requiring removal.
Mark

Elliott Potter wrote:

> Andrew Lundy wrote:
> >
> > This is a fairly common failure on the '93-'95 90's.  Unfortunately that is
> > a reasonable estimate!!  I'm not sure what the part would cost but you can
> > look that up yourself(sounds right for an Audi).
>
> Do you know how it actually fails?  Does it rust through, or crack?  Is
> it something that could be repaired, or at least prevented when the new
> part is put in?
>
> Thanks,
> --
> Elliott
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