temperature gauge question and a/c

[Ameer Antar]

See below.


>
> Message: 6
> Date: Sat, 28 Jun 2008 20:47:38 -0500
> From: "Danton J.A. Cardoso" <djacardoso at gmail.com>
> Subject: temperature gauge question and a/c
> To: quattro at audifans.com
> Message-ID:
>        <2f562ef10806281847o1ebcf4bxd7b2a5f033f862c8 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> very short commute, about 3-4 miles.  When its midday or later in the
> afternoon when I am driving home from work, with the a/c set at 70,
> the temperature gauge will start creeping toward normal and hot.  In


Usually temp gauges should be in the middle. Audis tend to run just a tad
over that though. The additional heat from the a/c condensor may be
increasing the temp of the cooling system though. I would flush the cooling
system unless it's been done recently and make sure your coolant is 50/50
coolant and distilled water.


>
> addition, the a/c will blow warm, normal?  Also, is the main fan

a/c is supposed to make cold air, right? not normal. There are too many
possibilities here. The a/c system could be fine but the control unit may be
incorrectly leaving the heat flap open and mixing air from the evap with air
coming through the heater core. Any reputable shop can diagnose.


>
> supposed to run after the car has shut off?   I know its a short
> commute, so it may not kick on.  However, I am making a three hour
> drive at highway speeds next week, so maybe it will kick on then when
> the car is parked?
>

i don't know about your particular model, but usually it should come on if
the gauge is past center. Definitely if the gauge is at 3/4.