On Thu, 20 May 2004 00:33:02 -0400, Laurence Smith
<laurence@ALANASMITH.COM> wrote:

>I'd replace the coil.  The stalling while running and after warming up
>a bit can be the coil going bad.  However in such stalling cases, the
>engine normally starts up immediately.  Still in your case the coil
>may need to cool down a bit to allow a start.  Try the coil.

That's exactly the procedure my VW dealer takes: replacing everything in
sight until the problem goes away (or I have a new car...).

I was looking for an analysis method to pinpoint the reason of the
problem, and to replace just what's needed. The fault is intermittent and
hard to analyze in the garage.
Also, it doesn't seem the coil is getting hot because as I mentioned, this
problem occurs after a few minutes of driving too.
Maybe it's even a combination of problems (AFM+something else), making it
twice as hard to analyze logically. I'll try putting a monitor to the
spark as well as AFM output voltage and see who's the culprit...

but thanks anyway.

cheers. TM