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Re: fluctuation idle

O2 sensor or dirty/bad isv are usually the culprits. I believe, the v8
being a motronic car had 2 o2 sensors. Sometimes the trottle body is the
culprit. What'll happen is is that crud will build up around the plate. It
won't close properly. It will draw in 2x amount of air. Meanwhile the tps
is saying that the throttle is completely closed and the engine should be
drawing only x amt. of air. The computer tries to do what it can to
stabilise the idle, but it really can't. It goes between the actual draw
and the theoretical. I would explore all these possibilties, including the
usual tune up and other stuff.

*Steve                                       Sachelle Babbar
*'84  5ksT 1.6-2.0 bar                    <SBABBAR@IRIS.NYIT.EDU>
*Cockpit adjustable wastegate, AudiSport badge
*Disclaimer:"Any information contained herein is based purely on my own
*personal experience and may not necessarily reflect yours. Use caution as
*your results may vary from mine."

On Mon, 2 Mar 1998, Peter Sward USG wrote:

> I belive my idle is fluctuating. Question is this normal on a V8Q? It isn't
> that much but it isn't rock steady either. Anything to check?
> /Peter