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RE: "Outside Temp" adjustable?

I'm not sure about other Audis, but the 5Ks, 100s and 200s have two
outside temp sensors: on is located behind the grille and the second in
the plenum chamber on the evaporator housing. I believe this way the
computer knows both the "true" outside temperature and the temperature
of the air that is being sucked in by the system (which is supposedly
warmer after passing near the hot firewall).

Aleksander Mierzwa
Warsaw, Poland
87 Audi 5000CS turbo (mine)
88 Renault Medallion wagon (mom's)
91 mountain bike (just in case both cars broke at the same time :-)

> -----Original Message-----
> From:	Frederic Breitwieser [SMTP:frederic.breitwieser@mcione.com]
> Sent:	Monday, November 17, 1997 5:27 PM
> To:	William J Murin; Aleksander Mierzwa
> Cc:	'Gerard'; quattro@coimbra.ans.net
> Subject:	RE: "Outside Temp" adjustable?
> [...]
> Audi's (as well as other cars) have the outside temp sensor on the
> firewall, thus within proximity of your exhaust manifold, typically
> giving
> an innacurate reading.
> I solved my problem on my Lincoln by attaching a curved 3" piece of
> metal
> just below the sensor to the firewall, thus providing some heat
> insulation
> between the headers and the sensor.  Now I'm within 1-2 degrees tops,
> unless I'm stuck in traffic in 90 degree weather.
> Frederic Breitwieser
> Homebrew Automotive Mailing List
> Bridgeport, CT 06606
> http://www.geocities.com/MotorCity/Downs/4605/index.html
> 1989 AG Hummer 4-Door
> 1993 Supercharged Lincoln Continental
> 2000 Mid-Engine Sports Car <smile>
> Seeking Info on: GM Tubular Upper and Lower A-Arms
> ---