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Re: Motronic Idle Problems



Brett Van Sprewenburg wrote:

> What other pieces have you replaced?  This could be a marginal O2
> sensor.  Stick a meter on it and see what's up with it. (I won't
> detail the procedure here as it's in the Bentley manual).  I wouldn't
> think the bad sensors would do that...put a timing light on the
> engine and see if it's changing by itself as the idle floats around,
> that'll tell you if it's the knock sensor(s); as the computers' only
> recourse would be to alter the timing.  Any of this sound like a
> good idea?  Hmmm, bad DPR throwing the mixture off?  Does happen
> sometimes...incorrect mixture at the edge of what the computer could
> correct for?  ... fresh out of other ideas. :)
>
> ==Brett

All the ignition parts are new oem parts. The timing does jump around at idle
so I'm thinking it could be the knock sensors. The o2 sensor is new.

Jason.
87 Scirocco 16v 2.0 Motronic


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