Audi 4000 Quattro still problems with windows

[David Vanden]

I need the expansion tank for a 1987 Audi 4000 Quattro and a radiator
cooling fan that is in good shape. Does anyone have any suggestion?

Sincerely,
David Vanden



On Fri, May 8, 2015 at 7:48 PM, Jan Pinkowish <jpinkowish at comcast.net>
wrote:

> As Huw indicates, you are looking for the thermofuse that protects the
> windows and sunroof.
> It is a small rectangular silver can measuring 1/4 x 5/8 x 7/8 and is
> located right on top of one of the relays in the auxillary relay panel.
> Gently bend aside the the plastic safety holding in the fuse and remove the
> fuse.
>
> Part number is 443 937 105.  It is a 20amp 12v fuse.  A bijillion Audi/VW
> cars use it, so should be available from the dealer for about $10.
> Either the fuse itself is borked and opening after 20-30 sec, or something
> is causing the fuse to open.
>
> I would first replace the fuse.  If problem not solved, then you can
> follow Huw's troubleshooting advice.
>
> BTW, the power window wiring diagrams for '87 4kq are on Bentley 97.287 --
> 288.  The thermofuse is designated "S43" on pg. 287.  Pages 97.266 -- 268
> give you relay layouts, list current tracks for major components, and tell
> you the locations of connectors and grounding points.  Too bad it doesn't
> mention where to find the thermofuse.
>
> HTH.
>
> Jan Pinkowish
> '85 4ksq
>
> --------------------------------------
> Message: 1
> Date: Fri, 8 May 2015 02:16:00 +0000
> From: <dvanden46 at gmail.com>
> Subject: Audi 4000 Quattro still problems with windows
> Well I think I located the auxillary fuse relay panel (under the dash at
> the driver’s knees).  I pulled out each relay and none of them shut off the
> windows for the first 20 seconds that they work.  So I still have no idea
> what is affecting the power windows or where it is.  I have a Bentley
> manual but I really don’t know how to read the wiring diagrams.  I do not
> comprehend diagrams nearly as well as I do words.    If anyone has any
> further advice, please let me know.
> Message: 3
> Date: Fri, 08 May 2015 00:15:20 -0400
> From: Huw Powell <audi at humanspeakers.com>
> To: quattro at audifans.com
> Subject: Re: Audi 4000 Quattro still problems with windows
>
> Read my description.  You're not looking for a relay, it's a circuit
> breaker (maybe).
>
> You can also try pulling the window switch panel and disconnecting the
> switches one at a time to see if it isolates a problem window
> motor/circuit.
>
> At the throttle body end of the accel. cable.  There a plastic bit with
> grooves around it and a metal clip that can be removed and put back on a
> different groove to take out the slack (they aren't threads).  If there
> is still slack take it apart and add some washers or a plastic bushing.
>   Try not to break the rusty old metal clip.
>
> - Huw
>
> audi.humanspeakers.com
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