[s-cars] A/C shutting down

[Mike Claire]

Thanks Tom and other listers who replied.  In a
perverse way I guess this is good news - nothing to
fix!  But it still surprises me that a car can be
designed without sufficient cooling to survive in even
110 deg temps without having to resort to shutting
down A/C.

One more question about these A/C systems.  The
compressor is LOUD.  A constant groan kind of like a
dry power steering unit.  Is this normal too?  I guess
I hope it is...


Mike


--- TOM GREEN <trgreen at comcast.net> wrote:
> > Date: Thu, 22 Jul 2004 21:10:49 -0700 (PDT)
> > From: Mike Claire <mclaire_us at yahoo.com>
> > Subject: [s-cars] A/C shutting down
> > To: s-car-list at audifans.com
> > Message-ID:
> <20040723041049.14590.qmail at web40405.mail.yahoo.com>
> > Content-Type: text/plain; charset=us-ascii
> >
> > I just took my new '93 S4 for a shakedown run to
> NYC
> > and back (250 miles each way).  It was over 90
> degrees
> > and I got caught in 1 1/2 hrs of crawling traffic.
> >
> > The gauges indicated the car was running hotter
> than
> > I'd seen it to date.  But it didn't look like it
> was
> > overheating.  Then the A/C shutdown - I heard the
> > compressor shut off.  I pushed the button to start
> it
> > again - couldn't get it to hold.  It seemed like
> the
> > computer was telling it not to run, so I shut the
> > ignition off and re-started the car - A/C worked! 
> For
> > about 5 minutes and then it shut down again.  This
> > kept happening for 1/2 hr when the traffic opened
> up
> > and the car cooled down a little.  A/C was fine
> for
> > the next 4 hours until I got home.
> >
> > Is this a programmed safety override to keep the
> car
> > from overheating?  It's not as if it was 130
> degrees
> > out.  I can't believe it would be designed to do
> this
> > in 95 degree heat - what's the problem?
> >
> > Thanks
> > Mike
> 
> Mike,
> 
> You have correctly diagnosed the operation of the
> a/c system.  Great, 
> ain't it ?  Did the electric fan run at high speed
> before the shutdown 
> ?  Just keep the condenser clean and every thing in
> top condition and 
> try to stay away from the stopped traffic.
> 
> Tom '95 S6
> 
> 



		
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