Re: cruise control

[Huw Powell <audi@mediaone.net>]

> On my 4000q, the vaccum valves at the pedals sometimes leak a bit. After a
> bump, the car might slowly slow down (cruise does not go completly off.
> Vaccum pump just can't keep up with the leak. It goes  completly off when
> you hit a BIG bump, and the switches turn OFF the cruise)
> 
> Or, sometimes cruise just will not engage.
> 
> Both problems are cured by pulling up on the pedals (clutch & brake) at
> the same time with one's toes...
> Not elegant, but sure a lot easier than going upside down under the dash to
> fix  the vaccum valves...

Never seen bad vacuum valves (though I'm sure it happens), seen a lot of
dirty electrical switches at the pedals.  the vac switch is less
sensitive than the electrical from my tests, ie the electrical switch
will open (esp if dirty) befreo the vacuum switch.  So the "bump - cc
off" mode (which I really, really don't miss at all!) is more a function
of dirty hair trigger switches.  Do it right and clean them.

-- 
Huw Powell

http://www.humanspeakers.com/audi/

82 Audi Coupe; 84 4kq; 85 Coupe GT; 73 F250