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A/C intermittent?



Ok, here's my story.  I just want to see if there are any BTDTs out there.
The car is a 95 A6Q.  This weekend, I invite some friends over and I've been
trying to talk him into buying an A4 instead of a Maxima.  Anyway, he wants
to go for a ride in the A6.  So, we're on our way to the restaurant in stop
and go traffic (mostly stop) and the car's doing fine and it's about 97
outside according to the car.  Anyway, I only have the air set on 76, but
it's running pretty cool.  He's messing around asking me about the car and
pushes the climate control down to 71.  No big deal, except about 3 or 4
minutes later the air coming out of the vents is not cool anymore.  It's
like the car is on vent and the compressor is not running.  I push the
little snowflake off and then on and nothing happens.  The car itself, is
running cool in the normal place on the temp gauge and the oil gauge is cool
also, somewhere around 100 C.  Of course, I don't see how changing the temp
could have anything to do with this problem but it is the only event that
happened.  By the time we're too the restaurant, everybody is sweating which
is a little embarrassing.  When we get out of the restaurant and back in the
car, voila!  The air is cold again.  This was on Saturday and we drove the
car the rest of the weekend in temps (according to the car) from 97 to 102
deg and never again had problems with the air.  Now, this happened to me
once before in Pennsylvania.  No matter how low I turned the climate control
I kept sweating.  After we stopped somewhere and started again I had cold
air.  This is very bizarre, but it is an Audi and has so far been absolutely
trouble free so I guess it's my turn.  Any idea what could cause this
symptom?  The car's still under warranty so I figured I would take it in but
with my dealership experiences, there's a much greater chance that someone
on the list has a clue what's wrong that them.
TIA,
Samuel
95 A6Q (A little moody)

Samuel W. Clough
INVESCO Retirement Plan Services