[A4] Overheating issue

Nick Thompson sfdaytona at yahoo.com
Mon Jun 23 19:59:43 PDT 2008

 The Aux fan pulls air over the a/c condensor to help cool it down.  It really doesn't impact a car overheating. If the aux fan doesn't work, you'll have issues with the high pressure switch bidding farewell and your a/c will not blow ice cold unless you're moving.
Also, be sure and check the level of the coolant.  If it's empty, and you get an air pocket in the system, you might see a jump in temps while sitting.

----- Original Message ----
From: Richard Hurt <rnhurt at gmail.com>
To: Danton J.A. Cardoso <djacardoso at gmail.com>; A4 Mailing List <a4 at audifans.com>
Sent: Monday, June 23, 2008 10:48:27 PM
Subject: Re: [A4] Overheating issue

Turning on the A/C should automatically turn on the aux electric fan, if it
doesn't you could overheat (I guess).  Its very easy to check, just turn on
the A/C and listen for the fan noise to increase.  You might want to open
the hood and directly observe the fan, just don't stick your hand in there
as the fan can come on at any time and not just when the car is on.


P.S. I had to change my aux fan in my '98 A4 V6.  It wasn't too bad really,
mostly just un-clipping the wireing harness in 4-5 places and removing one
screw (I think).  I think there is a pretty good write up in the AudiWorld
tech section.

On Mon, Jun 23, 2008 at 9:56 PM, Danton J.A. Cardoso <djacardoso at gmail.com>

> Hello,
> Friday, I was involved in some stop/go traffic with outside
> temperature in the mid 80's.  Had A/C on set to auto with it set at 70
> degrees.  The temperature gauge began to move a needle's width from
> normal (centre), and then eventually began to creep over to the middle
> between hot and normal.  Oil temperature went up to 280. Also, check
> engine light kicked on. Shut engine for a few, then went back started
> it up and began to drive without the stop and go.  About 10 minutes
> into drive coolant light flashed, gave out three dings, and stayed
> lit.  Just about to shut off A/C and it blew hot.  Shut off engine for
> a few minutes, started up again, no light, but sluggish performance.
> Drove for about a mile. Coolant level was OK.  Turns out I need a fan
> clutch, normal?  Car has almost 97K on the odometer.  H20 pump has
> been replaced when timing belt was done as was thermostat.  I do not
> have the codes, but according to mechanic, it was reading misfires,
> was this attributed to the overheat?  Would there be any engine
> damage, or it just simply overheated?
> Thanks
> --
> Danton J.A. Cardoso
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> A4 at audifans.com
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