[s-cars] misfire

[Bjørn Ødegård]

High voltage isolation testing, like a 500-volt driven ohm-meter. (the
new ones are more adjustable, and often used to find shorts or
near-shorts in houses. (the name is actually taken from the company that
makes them, and is also a derive from the term megaohm.
http://www.meggerinstruments.com/ )

HTH,
Bjorn  :o)

----- Original Message -----
From: "Mihnea Cotet" <mik at info.fundp.ac.be>
To: "Bjørn Ødegård" <beernuts at online.no>; "Philip Mische"
<pmische at comcast.net>; "S-Car List" <s-car-list at audifans.com>
Sent: Monday, September 15, 2003 1:21 PM
Subject: Re: [s-cars] misfire


Björn, what does "megging" involve???

Thanks,

Mihnea

At 13:19 15/09/2003 +0200, Bjørn Ødegård wrote:
>After all the threads and posts regading damaged PSO's and coils, it
>seems that a bad coil often kills a PSO output, and if you don't check
>the coils, you might as well kill another output.. So, check the coils
>thoroughly before using the 'spare' output stage! To check it, a
>'megger' is invaluable, as the hairline cracks in the insulation
lacquer
>almost never shows up at ordinary insulation tests. (Cons: Beware of
>possible sparks when megging, and disconnect everyting from the car!..
>;o))
>
>Bjorn  :o)
>'92 S4 MTM
>
>
>----- Original Message -----
>From: "Mihnea Cotet" <mik at info.fundp.ac.be>
>To: "Philip Mische" <pmische at comcast.net>; "S-Car List"
><s-car-list at audifans.com>
>Sent: Sunday, September 14, 2003 8:31 PM
>Subject: Re: [s-cars] misfire
>
>
> > Philip, are the spark plug "wires" fine? Sounds like either a wire
or
>a bad
> > coil to me....
> >
> > HTH,
> >
> > Mihnea
> >
> > At 14:10 14/09/2003 -0400, Philip Mische wrote:
> > >This is a multi-part message in MIME format.
> > >--
> > >[ Picked text/plain from multipart/alternative ]
> > >I've got a problem with my 95.5 S6.  Here's the setup:
> > >   a.. In Feb I had a POS channel go bad.  I swapped over the wires
>to use
> > > the spare channel and things were fine.
> > >   b.. A few weeks later came another misfire.  When I went to
>diagnose it
> > > the motor went back to hitting on all 5 again, so I couldn't
figure
>which
> > > cylinder had the problem.  I figured I was losing another POS
>channel, so
> > > I bought a new one from a lister.
> > >   c.. Over the past few months the misfire would pop up again,
then
> > > quickly disappear, usually after I turned the car off and then
>started it
> > > back up again.  Like running a Microsoft based car.
> > >   d.. Yesterday the misfire came, but this time it didn't leave.
>Using
> > > the remove-the-fuel-injector-plug method I determined it was #4.
>That
> > > made sense, since the POS for #4 was the one that had the bad
>channel
> > > from Feb.  I found the new POS I'd purchased months ago and popped
>it in,
> > > and guess what?  No change!  I swapped out the other POS just to
be
>sure,
> > > again no change.  Darn.
> > >   e.. Checked the spark plugs, they were all tight.  I changed the
>#4
> > > spark plug and the miss was still there.
> > >Soooo, what's the next likely place to look?
> > >
> > >Thanks in advance,
> > >
> > >Phil
> > >--
> > >
> > >_______________________________________________
> > >S-CAR-List mailing list
> > >S-CAR-List at audifans.com
> > >http://www.audifans.com/mailman/listinfo/s-car-list
> >
> > _______________________________________________
> > S-CAR-List mailing list
> > S-CAR-List at audifans.com
> > http://www.audifans.com/mailman/listinfo/s-car-list
> >
> >
>
>
>
>DISCLAIMER:
>This message contains information that may be privileged or
confidential
>and is the property of the Roxar Group. It is intended only for the
person
>to whom it is addressed. If you are not the intended recipient, you are
>not authorised to read, print, retain, copy, disseminate, distribute,
or
>use this message or any part thereof. If you receive this message in
>error, please notify the sender immediately and delete all copies of
this
>message.





DISCLAIMER:
This message contains information that may be privileged or confidential and is the property of the Roxar Group. It is intended only for the person to whom it is addressed. If you are not the intended recipient, you are not authorised to read, print, retain, copy, disseminate, distribute, or use this message or any part thereof. If you receive this message in error, please notify the sender immediately and delete all copies of this message.