[s-cars] taking my turn

[Steve Marinello]

I wish it were that easy.  I never did eliminate the miss, after replacing
coil packs and swapping and replacing POS', too.  Miss was always on #4.
Then, a freak incident with the #3 plug getting blown out and destroying the
coil pack and revealing/causing the gasket failure resulted in a new gasket
and new coil pack and plug for #3...and the miss disappeared, never to
return again in the past 11 months.  So........

There was definitely a breach between #3 and #4 in the gasket.  COuld that
have existed before and have been causing the miss all along???

Steve
----- Original Message -----
From: "James Murray (LMC)" <James.Murray at ericsson.ca>
To: "'Martin, Gary G'" <MartinGG at aetna.com>; "AUDI S Cars Discussion List"
<s-car-list at audifans.com>
Sent: Friday, February 21, 2003 8:33 AM
Subject: RE: [s-cars] taking my turn


Could be the PSO, but more likely a bad coil... If it runs fine once it
warms up it's probably a bad coil rather than a bad PSO, a bad PSO will
likely stay bad (i.e. once the channel goes it stays gone...) but a coil can
slowly fail, when cold the coil isn't making a good electrical connection,
as the car warms up it makes a better contact and the car seems to run
smoother, you may notice a flutter under heavy boost however like Hap is at
the moment. A failing coil will not have the same resistance characteristics
of the others, if you have the means to check, it's worth checking all of
them.

Either way, the 1st test Gary describes is the easiest way to determine
which cylinder is causing the miss. The PSO test will also rule that out
item out to be sure. More indepth write up available here:
http://www.sjmautotechnik.com/S4_Ignition.htm

Cheers, /J.

-----Original Message-----
From: Martin, Gary G [mailto:MartinGG at aetna.com]
Sent: Friday, February 21, 2003 12:27 AM
To: AUDI S Cars Discussion List
Subject: RE: [s-cars] taking my turn


Could be PSO. I believe this test could help. If it misses at idle, pull one
injector electrical connector at a time. When the idle doesn't get worse,
that is the cylinder missing. Then swap power stages, repeat the test and if
the bad cylinder moves, it is the PSO. I had  one go bad, but never did this
test because it was very intermittent. Luckily, a lister lent me a good PSO
to test with.

Gary

-----Original Message-----
From: Philip Mische [mailto:pmische at comcast.net]
Sent: Thursday, February 20, 2003 6:00 PM
To: S-Car List
Subject: [s-cars] taking my turn



95.5 S6.  Chipped, runs fine.  Turn off the car.  One hour later I fire it
up and not everyone fires up - it acts like it's got a fouled plug.  It's
very unhappy, and so am I.

1) Is this how a bad POS behaves?

Phil Mische
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