[urq] Cruise control vacuum+electrical switch removal

[Louis-Alain Richard]

Steve:
The CC is operative but any bump in the road will affect it. That's why when
I pull on the pedals, it works normally. Hence my diagnosis of bad/flaky
switches.

Results: As usual, Tony Lum was right. Both switches were flaky (>150 ohms)
and the vacuum part was fully functional. 

So I pulled them from the car. Again, you guys had it correct WRT how to
remove them: just unscrew form the pedal cluster. But the switches in my car
were not "openable"; the cap is welded/glued to the body. It would involve
cutting them apart to get access to the guts. For now, I just sprayed some
contact cleaner in there and I reinstalled them with more pressure from the
pedal on the plunger.

Installation is faster indeed, just push them as far as you can and give
them another turn to compress them fully against the pedal. Now their
resting position is different from before so I guess this will cure the
problems for a while. 

Louis-Alain
1983 Quattro
PS: the Pirelli Carving looks to be pretty aggressive tires in deep snow.
Much better than the Pirelli Winter 210 I had previous winters. 



> -----Message d'origine-----
De la part de Buchholz, Steven
> 
> 
> So ... do you know for a fact that the pedal switches is the source of
> your problem?  There are other sources that will render the CC
> non-operative ... for instance, it is possible for the CC to stop
> working if both brake lights are burned out or something is causing the
> brake lights to be on all the time.  On my V8 the CC failure was due to
> the switch on the stalk.
> 
> If you want to do a quick check for a vacuum leak you can pull the line
> at the "T" near the CC vacuum motor (near the strut tower/firewall on
> the left side) and apply a vacuum to the line going into the passenger
> compartment.
> 
> Steve B
> San Jose, CA (USA)
> >
> > So before kneeling in the snow, head first under the dash, to
> > remove these
> > nasty little gems, I guess I must measure the resistance first? :-)
> >
> > Do you know if the vacuum part goes bad also?
> _______________________________________________