Cruise Control Problems
audi at humanspeakers.com
Sun May 14 20:12:31 EDT 2006
> Wondering if anyone has BTDT w/ cruise control problems on a '91 Avant.
> I've checked fuses, tested the throttle servo w/ vacuum, tested the
> brake and clutch switches to ensure they hold vacuum and dump vacuum
> when depressed.
Check their resistance as well. Ditto the "set" etc. switches.
> I teed the line from the pump and it makes slight
> vacuum when setting cruise or hitting resume, but not much.
Tired pump? Small leak somewhere in lines?
So it does work electrically? Just unable to get to or hold a speed?
> I'd go
> through the test procedure in the Bentley book, but I can't even find
> the damn cruise ECU control unit
They are usually behind the radio, sort of. And I've never seen one go
This might help a bit:
More information about the quattro