[s-cars] 93 urS4: high speed fan and AC questions

[Martin, Gary G]

Good question. I don't know where it is. The used car dealer I bought my car
from did the replacement. He said it was very well hidden and he (if he is
to be believed) said they had to take a lot of things apart in the front end
to get at it. It probably is well hidden, cause I have never spotted it
while working in the engine bay. Maybe somebody on the list
knows.....listers?

Gary

-----Original Message-----
From: Bjørn Ødegård [mailto:beernuts at online.no]
Sent: Tuesday, September 17, 2002 8:08 AM
To: Martin, Gary G
Subject: Re: [s-cars] 93 urS4: high speed fan and AC questions


Hi!
If the defective resistor was on your S4, where was it located?? I can't
find mine! I think mine might be busted as well..

Regards,
Bjorn  :o)
'92 S4


----- Original Message -----
From: "Martin, Gary G" <MartinGG at aetna.com>
To: "AUDI S Cars Discussion List" <s-car-list at audifans.com>
Sent: Tuesday, September 17, 2002 4:57 AM
Subject: RE: [s-cars] 93 urS4: high speed fan and AC questions


> What is your temperature gauge doing? I know for a fact that if the
coolant
> temp gets high enough, the AC will shut down. My problem was related
to a
> failed fan resistor block, which controls fan speed. Acted just as
your
> symptoms indicate. I don't remember if the fan came on at low speed,
but in
> stop and go traffic, temp went up, AC shutdown.
>
> Gary
> 94 UrS4
> 91 200 TQA
>
> -----Original Message-----
> From: Eric Billing [mailto:eric.billing at eds.com]
> Sent: Monday, September 16, 2002 10:37 PM
> To: S-Car-list
> Subject: [s-cars] 93 urS4: high speed fan and AC questions
>
>
> Thinking two separate problems here... but thought I'd ask anyway.
>
> 1) during recent heat wave here in Mpls (95+ on 9/7) I noticed that
the high
> speed fan never came on. Waited about 10 minutes to get through a
Dairy
> Queen drive through on this hot day... still no high speed fan.  At
home I
> did a comparo with the wagon, just idling... about 10 minutes and the
> wagon's fan goes high speed. Swapped relays with the wagon---which
seemed to
> confirm that this was not the problem. Earlier this spring, the wagons
fan
> was "stuck" on high speed all the time. New switch (lower driver side
of
> radiator) cured that. Me thinks the same switch is bad on the S4-only
this
> time its stuck on off vs. on. Make sense?
>
> 2) Also on the S4, I've noticed a few times during very hot days that
the AC
> just doesn't cool well. In stop and go traffic, I've noticed it
shutting
> itself down---even the icicle symbol on the control unit turns off and
on by
> itself. These cycles last 10-15 seconds or longer. When back to
highway
> speeds, the auto off/on cycling goes away and it appears that things
are
> acting normally---however, I must admit that overall cooling is
lacking.
> Then again, I have a black interior on the S4, where the wagon is
grey...
>
> So, independent or related? If the high speed fan never comes on, does
the
> AC have some sort of auto shutdown mode to avoid excessive load?
>
> Thanks in advance for your ideas.
>
>
> Eric
>
>
> --
>
> Eric Billing
> Eagan, MN 55123
>
> 1993 100csqw
> 1993 urS4
>
> mailto:eric.billing at eds.com
>
>
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