ghosts in my audi

[Huw Powell]

> I would venture a guess there is a vacuum switch on the clutch for the
> cruise control.  Perhaps by pushing the clutch in the vacuum switch causes
> the car to stall.  Pure speculation on my part but worth investigating.
> Perhaps others on the list could comment better on symptoms exhibited during
> vacuum leaks.  Hope this suggestion helps and Good Luck.

the vacuum that runs the cruise system is not sourced form the engine,
so, no this would not be related at all.

I'd look into the ISV, which is supposed to deliver air to control the
idle when your foot is off the gas, and the idle switch (on the throttle
body), which tells the ECU to do this.

The stalling when removing oil cap is good, it means there are no vacuum
leaks in the engine.

> > Hello group,
> > my 1990 100q has a bit of a stalling problem.  It
> > seems that when I stop at a stop sign or red light, as
> > soon as I put the clutch in the RPMs fall, past idle
> > and stall.  The car does about 3 times a week, I
> > wasn't really worried about it until I realized that
> > the car stalls as soon as you take off the oil cap.
> > Is this a safety feature, are the two related, should
> > I worry, and how can this be fixed?  Any help out
> > there is much appreciated, thanks.

-- 
Huw Powell

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

http://www.humanthoughts.org/