[s-cars] Engine cut-out - still

[pcschulz at comcast.net]

Bob:

Couple of things come to mind.

Voltage at the fuel pump - potential wiring/relay issue...
Fuel pressure - potential blockage.
Bent/damaged flywheel timing pin..

-Peter

6 Quattros...



 -------------- Original message ----------------------
From: Robert Myers <robert at s-cars.org>
> 
> 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.  ;-)
> 
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