Speedometer Problem

[Steve Sears]

Charles,
You've managed to ferret out the most common culprit - unless you do the 
repair and rule that out, then we're just spitballing (maybe check the 
wiring diagrams to see where there's a common connection between the cruise 
and the speedometer?....splat!).  While you have the dash out, it might be a 
good time to make sure all the lights are working.
Cheers!
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes

----- Original Message ----- 
From: <mboucher70 at hotmail.com>
> Subject: Speedometer Problem
> To: <quattro at audifans.com>
> Message-ID: <BAY105-DAV13663E1B52FA4FA0A25683C15C0 at phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Sometime back, my car started exhibiting an intermittent 'stuck 
> speedometer'.  It would just stay at zero when being driven.  If I banged 
> on the dashboard, or even sometimes if I drove over a bump, it would 
> immediately come to life and work again.
>
> I've seen, on somebody's website, that this is a known problem with some 
> Audis of my vintage/model (Audi 100, 1990).  The problem is often a bad 
> soldier/bad connection on the circiut board.  The fix is to remove the 
> dashboard and re-soldier.
>
> Because I don't relish the idea of that adventure, including removal of 
> the steering wheel, I'd first like to get opinions on whether something 
> else, possibly more simple to correct, might in fact be the trouble.
>
> Don't know if this adds to the info, but when the speedometer cuts out, 
> the cruise control also shuts off.
>
> (Please forgive my frequent postings here of late...I'm on a mission to 
> take care of all the little things (or not so little) that I've been 
> putting off for a while...And this group is an invaluable resource.  I 
> don't know if any of you remember, but you successfully guided me through 
> troubleshooting, comlete tear apart and repairs of the fuel injection 
> system two years ago).
>
> Once again, thanks for any ideas,
>
> Charles