[s-cars] Engine cut-out - still

Fri Dec 22 11:44:03 EST 2006

Chris,

The cut-out happens at any time.  Under boost, at constant speed, 
either moderately high speed or even low speed, or with the foot 
completely off the loud pedal.  Sometimes it's no start but also it 
just dies at highway speeds.

I have not checked the FP voltage when the fault is happening.  For 
one thing, the fault condition frequently lasts less than a 
second.  The MAF has been swapped between cars with no difference but 
I will see about checking and cleaning the MAF connector and applying 
some Stabilant 22A to it.

Thanks for a new suggestion.

At 11:34 AM 12/22/2006, chris chambers wrote:
>*This message was transferred with a trial version of CommuniGate(tm) Pro*
>Should I assume that when it's acting up you confirmed that the
>fuel pump was receiving enough voltage?
>
>Is it a no-start condition or bucking when trying to accelerate?
>I had the bucking between 3-5k rpm, car thought it was overboosting
>and would cut off the fuel pump. Ended up being corrosion on the
>MAF cable.
>
>I'll guess that you have inspected the cable, if the contacts aren't
>corroded (clean them with contact cleaner anyway) perhaps the cable
>itself is damaged, I'd inspect the maf cable thoroughly.
>
>OK< now it's your turn to tell me you checked all this :-)
>
>
>Chris
>
>--- Robert Myers <bob at chips-ur-s.com> wrote:
>
> >
> >
> > Yes, the fuel pressure has been checked.  In fact, that's how the
> > second bad fuel pump was discovered.  The present FP is good.  The
> > FPR is brand new.  The MAF has been swapped between my two RS2ed
> > urS6es with no difference.  The FP wiring has been recently modified
> > so that power to the FP is relayed directly from the
> > battery.  Measured voltage at the FP is excellent.
> >
> > Good suggestions all but I BTDT.
> >
> > At 11:22 AM 12/22/2006, chris chambers wrote:
> > >*This message was transferred with a trial version of
> > CommuniGate(tm) Pro*
> > >Have you checked your fuel pressure? Perhaps you have a'partially
> > >obstructed line or intermittent fuel pump relay.
> > >
> > >I had a 244 Volvo years ago that had the same symptom which was
> > >fixed by replacing the fuel pump relay.
> > >
> > >Now ofcourse I said that not knowing if there is an actual relay for
> > >the fuel pump, but I'd think there would have to be one.
> > >
> > >Another thing to check would be thing voltage to your pump, perhaps
> > >the power line is damaged and you aren't getting enough juice.
> > >
> > >
> > >That's all I can think of for now, I certainly feel your pain.
> > >
> > >Chris
> > >
> > >
> > >--- Robert Myers <robert at s-cars.org> wrote:
> > >
> > > >
> > > > Hi Y'all,
> > > >
> > > > Well, I'm totally bumfozzled.
> > > >
> > > > A few months ago my '95.5 S6 (RS2ed) was suffering (no make that
> > "I
> > > > was suffering") a frequent engine cut-out.  I'd drive along at
> > more
> > > > or less constant throttle setting and the engine would just buck
> > as
> > > > if the ignition were turned off and then back on quickly.  At
> > that
> > > > time I got a lot of really good suggestions from several listers
> > and
> > > > I really appreciated the suggestions.  The cut-out grew
> > progressively
> > > >
> > > > "worser and worser".  The cut-out became more and more frequent
> > and
> > > > lasted longer and longer before the engine would again
> > > > restart.  Finally, when the day came that the engine simply would
> > not
> > > >
> > > > fire, I loaded the bitch onto a flatbed and had her taken to my
> > local
> > > >
> > > > stealer.  The old-time certified wrench there spent three weeks
> > > > determining that he could not find the problem.  :-(  The car
> > started
> > > >
> > > > and ran perfectly for him.  He did find that it did cut out on
> > him
> > > > once and he found that the injectors were not providing fuel at
> > that
> > > > time.  Following that incident it never again misbehaved.  I
> > finally
> > > > brought the car home and it ran perfectly for me for several 300+
> > > > mile trips over several weeks.  Yesterday it started misbehaving
> > > > again.  I'm beside myself.  It's enough to make me start
> > > > reconsidering Audis.  Hmmm...  Evo?  WRX?
> > > >
> > > > Items checked (from memory so I may be omitting something):
> > > >
> > > > No codes stored
> > > > ECU and chips (swapped with known good - no change)
> > > > Ignition system (swapped 1.8t conversion w/ OEM - no change)
> > > > Fuel pump (replaced twice - first replacement was also defective)
> > > > FPR (replaced)
> > > > Fuel filter (replaced)
> > > > Spark plugs (replaced)
> > > > Ignition switch (replaced)
> > > > CPS (replaced)
> > > > WGFV (replaced)
> > > > BPV (replaced)
> > > > Exhaust system (blocked kitty - system is now Stromung w/ test
> > pipe)
> > > > Engine speed sensor (swapped between cars - no help)
> > > > Probably a dozen other items checked/replaced early on and not
> > listed
> > > >
> > > > here from the effects of advancing Alzheimer's.  :-(
> > > >
> > > > Suggestions?  At this point an "accidental" fuel spell and a
> > spark is
> > > >
> > > > beginning to have some appeal.  ;-)
> > > >
> > > > _______________________________________________
> > > > S-CAR-List mailing list
> > > > S-CAR-List at audifans.com
> > > > http://www.audifans.com/mailman/listinfo/s-car-list
> > > >
> > >
> > >
> > >Make April 15th just another day http://www.fairtax.org
> > >
> > >
> > >__________________________________________________
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> > >
> > >
> > >--
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> > >12/22/2006 3:22 PM
> >
> >
> > Bob
> > urS6 with RS2 and other mods for sale: http://chips-ur-s.com/S6.html
> >
> >
> >
>
>
>Make April 15th just another day http://www.fairtax.org
>
>
>__________________________________________________
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>
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>12/22/2006 3:22 PM

Bob
urS6 with RS2 and other mods for sale: http://chips-ur-s.com/S6.html