[s-cars] Things that go bump in the night.

[Robert Myers]

Charlie,
I had the same experience with the OEM AAN coilpack about a year 
ago.  Coil internally shorted dead to ground and blew the fuse at the 
ECU.  Roadside fuse replacement allowed engine to fire about 1 
revolution and fuse blew again.  Eventually replaced the bad coil and 
all was well again.

This is different in feel.  If the ECU fuse were to blow and then 
repair itself very quickly then that would petty much reproduce the 
feeling.  A miss feels a lot different.

At 06:11 PM 6/16/2006, Charlie Smith wrote:
>*This message was transferred with a trial version of CommuniGate(tm) Pro*
>Earlier, Robert Myers wrote:
> >
> > Hi Y'all,
> >
> > Monday evening while driving home from Huntington (~110 miles) the
> > engine ('95.5 S6 AAN-RS2ed w/ 1.8t coil conversion + other goodies)
> > bucked once.  It felt like the ignition just cut out very briefly -
> > no more than 0.2 second or so, and about what the overboost cutout or
> > the redline cutout feels like except not quite so dramatic due to
> > lower performance level at the time.
> >
> > This evening, on a much shorter trip (~10 miles), it happened several
> > times more.  Usually it was just one very quick off/on cycle and then
> > all felt normal.  Once it was a double event - off/on/off/on.  All of
> > these times I was doing nothing unusual.  Mild speed, mild loud
> > pedal, no major boost, nothing out of the ordinary.  Got home
> > OK.  Left the ignition turned on (engine died in the garage - another
> > bump in the night?) hooked up VAG-COM and read codes - none found.
>
>That's sort of familiar symptoms of what I had when a coil shorted.
>
>Intermittent missing, then steady missing ...  got home & shut it off.
>Wouldn't restart no matter what.
>
>Got out the Vag-Com and not only had no codes, it couldn't find the ECU.
>Turned out that a coil shorted, and finally blew the fuse down under
>the floorboard next to the ECU.  I hunted all over for a blown fuse,
>and of course all (that I found) of them were fine.  After finding all
>fuses fine, I checked the fuel pump, and lots of other things.  I then
>had it towed to a shop, who proceeded to find the fuse blown by the ECU,
>and then the shorted coil.
>
>     - Charlie
>
>
>
>
>--
>No virus found in this incoming message.
>Checked by AVG Free Edition.
>Version: 7.1.394 / Virus Database: 268.9.0/368 - Release Date: 6/16/2006


Bob
urS6 for sale: http://chips-ur-s.com/S6.html