2.3 i5 hard idling

[SJ]

> > Somethime my engine idle as 200RPM to 2000RPM at 1 Hz, and then after
> > 1000 to 1200RPM at 1Hz and then by hazard oscilate again between 2000
> > to 2000,,,, and often stop...
> >
> > Went i drive couple minute at crusing 3000RPM then a stop at a STOP ,
> > i release the gaz,, them engine stall grrrrr
> >
> > What is that trouble ?
> > idle valve or something ?
>
> Or something, yes.  First two suspects, if all general tune-up items are
> in good shape, would be that the ISV needs cleaning, or that theidle
> switch (on throttle body) is bad/intermittent.  The ECU can't regulate
> the idle if it doesn't know it's supposed to.
>Huw

**** And, dont forget the throttle body itself. Dirty throttle plates will
stick in open position. I recently had that problem. Best remedy is to take
it out for cleaning. Not a hard job, get a new gasket before you begin.

SJ
85 Dodge PU, D-250, 318, auto
85 Audi 4k - - sold but still on the road
88 Audi 5kq
90 Audi 100q