RE: Rad Fan Will not Shut Off (Thanks)

["Parry, John C" <John.Parry@Unisys.com>]

Many thanks to all who responded to my plea for help. This list really is a
Godsend for those of us on a limited budget. Turned out the problem is the
the fan thermo switch, 2nd speed contacts are welded together according to
my ohmmeter. Ordered new switch (and multifunction switch AND tune-up kit!)
from Blau last night,
jeez can't you guys devalue your dollar by about $0.45 Canadian, anyhow
still cheaper than buying stuff up here. Also checked to make sure resistor
pack was good and sure enough all 3 speeds work.

Thanks again,
John
Audi 100 1989 2200037 KM

-----Original Message-----
From: Jon Moritz [mailto:jmoritz@medicine.nodak.edu]
Sent: Thursday, April 08, 1999 12:31 PM
To: quattro@coimbra.ans.net
Cc: Parry, John C
Subject: Re: Rad Fan Will not Shut Off



Sounds like the fan thermo switch is grounded out.  About $15-20+ for the
switch, and about 3-5 min to R/R the switch.  This same thing happened to
me recently... fans just stuck in high.. Since it was still very cold here
I just pulled the relays until the switch arrived and watched to make sure
I didn't let the coolant temp rise too high.

HTH
Jon

>Date: Thu, 8 Apr 1999 10:38:28 -0500 
>From: "Parry, John C" <John.Parry@Unisys.com>
>Subject: Rad Fan Will not Shut Off
>
>Hi List,
>
>Has anybody had any experience with the rad fan running continously on high
>speed? Car in question is an 1989 Audi 100. My climate control is screwing
>up and while I was trying the A/C mode the rad fan came on (on) high speed
>and now won't shut off. I know the fan should run at reduced speed when the
>A/C is selected.
>This happened yesterday on the way home from work. This morning when I
>started the car (outside temp -02c) the fan again started on high speed, CC
>set to Econ. I'm thinking it may be the resistors or the rad switch. I
>removed the relay to drive to work and that shut off the fan, I thought I
>would be able to turn the fan on by selecting the A/C but that didn't work.
>
>Seems like with the warm weather here the car is making me work outside!
>(replaced inner and outer L/H CV joints last Friday in driveway!).
>
>By the way thanks to all for the responses to my CC problem. Will have a
>look on the weekend.
>
>John
>1989 Audi 100
>

Jon Moritz
University of North Dakota - School of Medicine
'92 Audi 100 115k mi
In the Audi wasteland of NW Minn/ NE Nodak