erratic running (rich?)

[Huw Powell]

> The good old 90q cis III is behaving very oddly, a few weeks ago it started
> to drive really badly.... Absolutely gutless until around 4k and then it
> would absolutely fly, it stunk of petrol so I did a temp fix of leaning the
> mixture up a tad, which improved things almost to how it use to be, at the
> time I suspected it to be the o2 sensor, I have always suspected it of being
> on its way out. But know the car idles low when warm (400 revs) and when sat
> on the clutch the revs surge upto 1200 and back, driving seems reasonable
> with a few "flat spots"  but when changing gear and reapplying the throttle
> the car lurches. This could be due to a dodgy idle switch which is on my to
> do list. Any opinions gratefully received.

first, fix that dodgy idle switch.

then, at least reset the static mixture while warm and measuring the CPA
current.

and I'd take a look at the temp sender on top of the coolant neck.

--
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/