[s-cars] RE: Cutoff at 6k rpm

[Bob Rossato]

Well I did spend many months off and on going through all sorts of
troubleshooting, including rpm/speed/gear mapping to determine the tach was
in error, checking engine speed sensors, swapping ECUs, swapping tachs, and
finally swapping instrument clusters to figure out the problem was with the
circuit board in my IC.  Not to mention the cost of a used instrument
cluster it turns out I didn't need.  It was Paul who figured out you could
reset it in 10 minutes including the time it takes to crack open and consume
a good ale after a job well done.  Arggggh!

Bob

> -----Original Message-----
> From: s-car-list-admin at audifans.com
> [mailto:s-car-list-admin at audifans.com]On Behalf Of Bruce Mendel
> Sent: Monday, September 01, 2003 10:33 AM
> To: Bob Rossato; Rokas Reipa; quattro at audifans.com
> Cc: s-car-list at audifans.com
> Subject: Re: [s-cars] RE: Cutoff at 6k rpm
>
>
> This is the reason why I love this list, and I don't even have a UrS4
> anymore! This problem would take three months, four frustrated
> dealers, and
> hundreds of $$s to fix, and on here it's done in ten minutes (assuming Bob
> knows what he's talking about.....just kidding).
>
> Way to go!
>
> Bruce
> 01' S4, turbochargers going bad, missing my '93 S4
> ----- Original Message -----
> From: "Bob Rossato" <bob.rossato at att.net>
> To: "Rokas Reipa" <rokas at wam.umd.edu>; <quattro at audifans.com>
> Cc: <s-car-list at audifans.com>
> Sent: Monday, September 01, 2003 10:02 AM
> Subject: [s-cars] RE: Cutoff at 6k rpm
>
>
> > I had the same problem on my '95 S6 and it was driving me crazy
> trying to
> > track down the problem.  The long and the short of it is that you are
> > actually hitting the 7200 rpm redline and the ignition cut-off
> is kicking
> > in.  The tachometer is just reading low by approximately 17%, which is
> > coincidently the difference between 6 cyls and 5 cyls.  This is now the
> 5th
> > S6 that I have heard of having this problem, and it only affects the
> '95-'97
> > S6 with the digital odometer as far as I can tell.
> >
> > Fortunately Paul Gailus determined that the fix is easy, if you have
> access
> > to a VAG-COM.  The instrument cluster is most likely coded for a 6
> cylinder
> > engine, and since it is only receiving 5 pulses per revolution, it will
> read
> > low.  Here is a link to the post that Paul sent on how to fix it with
> > VAG-COM:
> >
> > http://www.audifans.com/pipermail/s-car-list/2003-May/016834.html
> >
> > If you don't have access to a VAG-COM the dealer will obviously
> be able to
> > reset it for you as well, but I wouldn't be surprised if they want to
> charge
> > you for a minimum of 1 hour labor even though it was a mistake caused by
> > whichever Audi dealership sold/serviced the car in the first place and
> > didn't reset the cluster for a 5 cylinder engine.
> >
> > Bob
> >
> >
> > > -----Original Message-----
> > > From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com]On
> > > Behalf Of Rokas Reipa
> > > Sent: Monday, September 01, 2003 1:54 AM
> > > To: quattro at audifans.com
> > > Cc: s-car-list at audifans.com
> > > Subject: Cutoff at 6k rpm
> > >
> > >
> > > Hey everyone. My newly purchased 95.5 S6 will not allow me to
> > > exceed 6k rpm.
> > > Tried running it up to the redline in 2nd gear and it began
> bucking and
> > > hesitating exactly at 6000 rpm, indicating a fuel cutoff. What gives?
> What
> > > can I check/do to fix this problem? Thanks,
> > >
> > > Rokas
> > > 95.5 S6