[s-cars] Edweirdo's miss

[Paul Krasusky]

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Ed pissed in the wind:

From: "Walsh, Edward" <edward.walsh at agedwards.com>
To: "'s-car-list at audifans.com'" <s-car-list at audifans.com>
Date: Tue, 8 Apr 2003 15:54:21 -0400
Subject: [s-cars] WGFV

Guys,

Just spent the last couple of hours with Ian Duff in his 400 amp garage.
Thanks again, Ian, for the time.... We may not have fixed the problem, but I
didn't have to spend $600 determine my plugs and coils are fine.

We were trying to diagnose the high boost/heavy load stumble/miss the I am
currently enjoying.  We swapped in his plugs (no change in my car) and his
entire coil pack (no change).  I showed Ian how I can get the car to over
boost to > than 25 PSI by flooring it at low RPMs in 5th.  I also showed him
how the car's max boost fluctuates between 18 and 21 PSI in 5th gear.  Here
is what I know:

- Plug connectors all have 5K ohm resistance
- Idle is smooth
- Coil pack is good
- Plugs are good
- Power is good until >1 bar
- Miss is subtle, but prevents boost from hitting 22-23 (MTM 1+) in all but
second gear, boost fluctuates from 17-20.5 in 5th gear
- Miss is most apparent when engine is COOL

Everything in the ignition system checks out so the next thought is that
maybe the WGFV is sticking.  I slow/sticking/dirty WGFV may cause the
low(er) boost as the valve can't shut air tight, so boost is bled off.  The
valve may also be responsible for the over boost problem if it is sticking
shut.  FWIW, the WGFV clicks when performing the output tests.

Is it best to just replace this valve, or can it be cleaned ?

Ed (who is always impressed with the quality of Ur S folks willing to lend a
hand, and a wrench)





Edweirdo-

I assume you've also already swapped out ECUs???  If not, well...

My useless $0.00000002

-Paulie Apathetic
CT

P.S.  amen to your last comment...  said it before and I'll say it again...
I'm active with car groups in general, whatever the marque, I'm a hoar.
BUT...  everyone and anyone (Bimwads, Benzers Pheads, etc.) that's met 'us'
all agree...  they've NEVER seen anything like the dynamics of this //S
group.  Again, amen brutha.  I'll come up and laugh at you if it will help?