Stalling and rough idle at startup w/ warm or cold engine

Bryan Foster bfoster at
Tue Aug 17 14:24:49 EDT 2004

I didn't think it was the BPV because it doesn't stall any other times
than during the first minute after startup.  Doesn't do the typical stall
when you come to a stop, clutch in.  Also don't think it is the ISV
because the idle is rock solid after that first minute after start up.  I
am leaning towards O2 sensor given that it changes from open to closed
circuit within the first minute after startup.  I dont know if my mileage
has been suffering though.

On Tue, 17 Aug 2004 SuffolkD at wrote:

> Bryan:  ISV or BPV that's my guess.  You have Vag-Com?
> -SCott by BOSTON
> > From: Bryan Foster <>  List,
> > Brief question to point me in the right direction...
> >
> > My car starts up fine but immediately idles roughly and will stall if you
> > dont give it some gas.  As you give it gas there is some hesitation.
> >
> > This is both in warm and cold start conditions.
> > After about 1 minute the problem resolves and idles normally.  There is no
> > smoke from the tailpipe on startup.  Briefly I visually checked the
> > vacuum lines and they look intact. No fault codes or check engine light.
> >
> > Any suggestions?  Sound familiar to anyone?
> >
> > Thanks in advance,
> >

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