[s-cars] Nasty Misses when Pushing the "93 S4

[Robert Myers]

So can a torn wastegate diaphragm.

At 03:14 PM 3/10/2005, chris chambers wrote:

>Sounds like its cutting off the fuel pump because the ecu thinks it is
>in an over boost situation.
>
>Check and see if you have any codes
>
>Check for boost leaks
>
>Check the maf connector, a dirty connection can cause this problem. I
>had this problem and remedied it by using a liberal amount of
>electrical contact cleaner.
>
>A bad MAF can cause this problem
>
>
>
>HTH
>Chris
>
>--- Bob DG <bobs6 at msn.com> wrote:
>
> > Cut out.
> >
> > >From: Robert Myers <robert at s-cars.org>
> > >To: "Bob DG" <bobs6 at msn.com>, richard.tanimura at gmail.com,
> > >chris.holinger at gmail.com
> > >CC: s-car-list at audifans.com
> > >Subject: Re: [s-cars] Nasty Misses when Pushing the "93 S4
> > >Date: Wed, 09 Mar 2005 18:13:02 -0500
> > >
> > >
> > >
> > >Is it a miss or a cut-out.  A miss is with one cylinder.  A cut-out
> > just
> > >shuts everything off for a bit.
> > >
> > >At 06:08 PM 3/9/2005, Bob DG wrote:
> > >
> > >>So you think the nasty misses are a failing ignition coil? I am
> > >>experiencing the exact same problem, intermittent fuel or spark
> > cut-off.
> > >>
> > >>>From: Robert Myers <robert at s-cars.org>
> > >>>To: "Bob DG" <bobs6 at msn.com>, richard.tanimura at gmail.com,
> > >>>chris.holinger at gmail.com
> > >>>CC: s-car-list at audifans.com
> > >>>Subject: Re: [s-cars] Nasty Misses when Pushing the "93 S4
> > >>>Date: Wed, 09 Mar 2005 14:58:55 -0500
> > >>>
> > >>>
> > >>>The OEM Bosch 3 bar pressure transducer is NLA.
> > >>>
> > >>>A 2.5/3.0 bar VMAP (http://moreboost.com) is a suitable
> > replacement.
> > >>>BUT...  I don't think it will solve the problem with a failing
> > ignition
> > >>>coil.
> > >>>
> > >>>At 02:52 PM 3/9/2005, Bob DG wrote:
> > >>>
> > >>>>What about a replacement for the 3.0 bar sensor?
> > >>>>
> > >>>>>From: Richard Tanimura <richard.tanimura at gmail.com>
> > >>>>>Reply-To: Richard Tanimura <richard.tanimura at gmail.com>
> > >>>>>To: Chris Holinger <chris.holinger at gmail.com>
> > >>>>>CC: s-car-list at audifans.com
> > >>>>>Subject: Re: [s-cars] Nasty Misses when Pushing the "93 S4
> > >>>>>Date: Wed, 9 Mar 2005 08:17:13 +0100
> > >>>>>
> > >>>>>Chris,
> > >>>>>
> > >>>>>Those symptoms sound familiar. Lots of us have BTDT. Could be a
> > bad
> > >>>>>MAP sensor. Could also be a leak in the boost tract. Leaks are
> > pretty
> > >>>>>common if you still have not changed your rubber hoses in a
> > while.
> > >>>>>
> > >>>>>1. Pressure test the boost tract and listen for leaks. Check the
> > >>>>>clamps for tightness.
> > >>>>>
> > >>>>>2. If it isn't a leak and you are certain it is the MAP sensor I
> > >>>>>recommend VMAP. VMAP makes a dandy replacement to the Bosch 2,5
> > bar
> > >>>>>sensor.
> > >>>>>
> > >>>>>http://moreboost.com/
> > >>>>>
> > >>>>>Rich
> > >>>>>
> > >>>>>On Tue, 08 Mar 2005 20:47:03 -0800, Chris Holinger
> > >>>>><chris.holinger at gmail.com> wrote:
> > >>>>> > In Seattle, WA and was just diagnosed with a bad ECU pressure
> >
> > >>>>>sensor.
> > >>>>>The
> > >>>>> > Beast is shutting off the fuel when I really put the spurs to
> > it so
> > >>>>>it¹s
> > >>>>> > bucking big time.  Or, as Bob Myers put it:
> > >>>>> > ³symptoms:  starts fine.  Idles fine. Cruises at constant
> > speed
> > >>>>>fine.
> > >>>>>Will
> > >>>>> > accelerate if not done too enthusiastically.  If you get
> > heavy on
> > >>>>>the loud
> > >>>>> > pedal you have a nasty miss.²
> > >>>>> > Suggestions based upon the fact that I would like to upgrade
> > in the
> > >>>>>near
> > >>>>> > future?  Keep in mind, I just want to make it back to Chicago
> > by the
> > >>>>>end of
> > >>>>> > the month safely.
> > >>>>> >
> > >>>>> > Å’Preciate any other help/advice you can offer.
> > >>>>> >
> > >>>>> > Thanks,
> > >>>>> > Chris
> > >>>>> > --
> > >>>>> > http://homepage.mac.com/cholinger/headinwest/
> > >>>>> >
> > >>>>> > _______________________________________________
> > >>>>> > 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
> > >>>>
> > >>>>
> > >>>>_______________________________________________
> > >>>>S-CAR-List mailing list
> > >>>>S-CAR-List at audifans.com
> > >>>>http://www.audifans.com/mailman/listinfo/s-car-list
> > >>>>
> > >>>>
> > >>>>
> > >>>>
> > >>>>-- incoming mail is certified Virus Free.
> > >>>>Checked by AVG Anti-Virus.
> > >>>>Version: 7.0.308 / Virus Database: 266 - Release Date: 3/7/2005
> > >>
> > >>
> > >>
> > >>
> > >>
> > >>-- incoming mail is certified Virus Free.
> > >>Checked by AVG Anti-Virus.
> > >>Version: 7.0.308 / Virus Database: 266 - Release Date: 3/7/2005
> >
> >
> > _______________________________________________
> > S-CAR-List mailing list
> > S-CAR-List at audifans.com
> > http://www.audifans.com/mailman/listinfo/s-car-list
> >
>
>
>"When you see a rattlesnake poised to strike, you do not wait until he has 
>struck before you crush him." ~ Franklin D. Roosevelt
>
>__________________________________________________
>Do You Yahoo!?
>Tired of spam?  Yahoo! Mail has the best spam protection around
>http://mail.yahoo.com
>
>
>-- incoming mail is certified Virus Free.
>Checked by AVG Anti-Virus.
>Version: 7.0.308 / Virus Database: 266 - Release Date: 3/7/2005