solved! problems with cruise control and diff lock

[Anton Greil]

Thank you for the input! With your help I could fix the problem.
The problem why cruise control and diff lock did not work, was a simple
leak in the vacuum hoses up the brackets for the foot pedals.


original message:

>Hi,
>
>I am new on this list and I have a problem with the diff lock and the
>cruise control of my ´88 Audi 100 quattro (I think this model was
>available in 1989 in US). Both does not work. I checked the fuses and
>the cable connections (optically) and they seem to be ok. I cleaned the

>cable connectors and used some contact spray. Further I removed the
>aftermarket car stereo, because I thought there was a problem with the
>vehicle speed signal. But all did not work. Now my question: Could it
be
>that the cruise control and diff lock are dependent on the gear unit
>because it was replaced after a transmission failure some time ago.
(But
>both worked after changing.) What else could it be?
>
>thanks
>Toni