[s-cars] Stumble/PowerLoss Redux

[Jerry Scott]

My coil failure started with similar simptoms as your car and would 
misfire at sometimes any engine speed.  I was able to fine the cylinder 
number when it began misfiring at idle, by disconnecting the injectors 
one at a time.

If you were in Denver I could help you with a temporary swap test.  But 
since I see that you are in MN, you should try some of your local s-car 
owners.  How about some help MN guys.
Jerry

Douglas Fifield wrote:

> Jerry,
>
> Not ignoring, but my resources are limited, so I am trying the easy
> stuff first and thinking about the problem, as thoughts are free.
>
>> From what I have learned off the list, intermittent coil failure seems
>
> to raise it's head under high boost conditions rather than low boost,
> light throttle situations, where I am having my problems.  That is not
> to rule out a coil malfunction, but to diagnose the coils, as you so
> well pointed out, I need to find a donor coil pack and swap it, or
> simply buy new coils.
>
> Option one is perhaps doable if I can convince someone locally to help
> me out, but option two is not financially feasible for me to conduct
> as an experiment.  Hence the "thought experiment" technique that I am
> soliciting participation in here on the list.
>
> On 7/17/06, Jerry Scott <jerryscott at wispertel.net> wrote:
>
>> Several on the list have mentioned coil failure but you seem to be
>> ignoring this suggestion.  This is the most common failure that occurs
>> in the ignition system.  If you can find another owner with a proper
>> running car. swap out the entire coil group to see if it still
>> misfires.  Or, buy  new coils.
>> Jerry
>>
>> Douglas Fifield wrote:
>>
>> >All,
>> >
>> >The car blinked one code:
>> >
>> >2413 (Blink Fault Code), VAG1551/2 Fault Code Number 00561 Mixture
>> >Adjustment, Adaptation limit exceeded, Symptom: Rich mixture,
>> >increased fuel consumption
>> >
>> >Does this point to the O2 sensor?
>> >
>> >D.
>> >
>> >On 7/16/06, Michael Wakefield <S4Quattro at comcast.net> wrote:
>> >
>> >
>> >>After you do that, add the result to your list of symptoms, and
>> >>republish it to the list.
>> >>Mike
>> >>On Jul 16, 2006, at 6:46 PM, Douglas Fifield wrote:
>> >>
>> >>
>> >>
>> >>>Mike,
>> >>>
>> >>>I have never tried to do it before, but tomorrow I will try to 
>> "blink"
>> >>>the codes out with the CEL.
>> >>>
>> >>>Douglas
>> >>>
>> >>>On 7/16/06, Michael Wakefield <S4Quattro at comcast.net> wrote:
>> >>>
>> >>>
>> >>>>This has probably been asked, but I didn't see it on your list of
>> >>>>symptoms - have you checked for stored codes?
>> >>>>Mike Wakefield
>> >>>>Highlands Ranch, CO
>> >>>>93S4
>> >>>>97Cab
>> >>>>On Jul 16, 2006, at 4:21 PM, Douglas Fifield wrote:
>> >>>>
>> >>>>
>> >>>>
>> >>>>>All,
>> >>>>>
>> >>>>>In my atttempt to repost my plea for help, I seem to have
>> >>>>>
>> >>>>>
>> >>>>deleted it.
>> >>>>
>> >>>>
>> >>>>>Just goes to show how adled I have become.
>> >>>>>
>> >>>>>To recap, I have a 95.5 S6 (105K miles) that has developed an
>> >>>>>annoying, intermittent stumble/loss of power.  I am apealing to the
>> >>>>>sacred order for illumination and I come on bended knee.  This is
>> >>>>>driving me nuts and certainly takes the pleasure out of driving an
>> >>>>>S-car.
>> >>>>>
>> >>>>>Symptoms:
>> >>>>>- Stumble during either low RPM startup (like pulling away from
>> >>>>>
>> >>>>>
>> >>>>a stop
>> >>>>
>> >>>>
>> >>>>>sign) or during cruising conditions where there is very little
>> >>>>>throttle being given (could be going 30 or 70).  Often noticed at
>> >>>>>about 3K in cruising conditions.
>> >>>>>- Almost like a miss or dropped cylinder.
>> >>>>>- Don't think it's a POS channel, BTDT and this has gone on too
>> >>>>>
>> >>>>>
>> >>>>long.
>> >>>>
>> >>>>
>> >>>>>- Replaced fuel pressure regulator and fuel filter
>> >>>>>- Replaced plugs and plug connectors
>> >>>>>- Tested throttle position sensor per Bentley and that checked out.
>> >>>>>- Condition will dissappear spontaneously, or sometimes with rapid
>> >>>>>pulsing of the gas pedal (not a sure fire fix).
>> >>>>>- Does not appear with a cold engine.
>> >>>>>- When warm, will sometimes occur as soon as the engine is
>> >>>>>
>> >>>>>
>> >>>>turned on.
>> >>>>
>> >>>>
>> >>>>>- When it is present, pressing gas pedal gives little to no
>> >>>>>accelleration, just bogs down.
>> >>>>>- Running an MTM Stage 1+, Samco hoses, RS2 EM.
>> >>>>>- Does not happen at higher RPM's and boost
>> >>>>>
>> >>>>>So, anyone have a suggestion on what I should check?  I sure would
>> >>>>>appreciate your thoughts.
>> >>>>>
>> >>>>>D.
>> >>>>>
>> >>>>>--
>> >>>>>Douglas in MN
>> >>>>>95.5 Audi S//6 Avant
>> >>>>>73 BMW R60/5 mit Toaster Tank
>> >>>>>_______________________________________________
>> >>>>>S-CAR-List mailing list
>> >>>>>S-CAR-List at audifans.com
>> >>>>>http://www.audifans.com/mailman/listinfo/s-car-list
>> >>>>>
>> >>>>>
>> >>>>
>> >>>>
>> >>>--
>> >>>Douglas in MN
>> >>>95.5 Audi S//6 Avant
>> >>>73 BMW R60/5 mit Toaster Tank
>> >>>
>> >>>
>> >>
>> >>
>> >
>> >
>> >
>> >
>>
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>
>