[s-cars] More Help Needed on Miss/Stutter/Power Loss

[Douglas Fifield]

Dave,

I checked the throttle position sensor as per Bentley and it looks good.

0 ohms closed
Inf. ohms when opened slightly

Measured across pins 4 and 6.

Doesn't look like that is the problem, damn.

D.

On 7/13/06, djdawson2 at aol.com <djdawson2 at aol.com> wrote:
>
>
> I would check the resistance values out of the throttle position sensor.  If
> the TPS fails, it could never cause a dropping cylinder effect, but could
> cause a stumble, power loss, and cutout.
> Good luck,
> Dave
>
>
>  -----Original Message-----
>  From: douglas.fifield at gmail.com
>  To: s-car-list at audifans.com
>  Sent: Thu, 13 Jul 2006 11:36 AM
>  Subject: [s-cars] More Help Needed on Miss/Stutter/Power Loss
>
>
>
> Folks, I am still trying to track down the root cause of my M/S/PL (see
> subject) on a 95.5 S6 Avant with 105K on the clock. Symptoms are intermitent
> loss of power, stumble, rough running as if a cylinder dropped out. It does
> not act like my previous POS channel failure in that is has been going on
> too long. I am looking at fuel supply issues, but that is only a guess. I
> have never been able to pin it down to one cylinder going bad. Seems to
> occur more at low RPM's than at high. Seems to occur more "off boost" than
> on. Sometimes when it happens on the freeway (5th gear, RPM's about 3K) I
> can get it to smooth out by rapid fluctuations of the throttle. This is not
> a sure fire cure by any stretch however. Does not seem to happen when the
> engine is cold. I just replaced the fuel pressure regulator with one another
> enthusiast had (about 6K miles on it) but that did not fix the problem. I
> have a fuel filter on order and will swap it in as soon as I can. Anyone
> have thoughts on this one? D. -- Douglas in MN 95.5 Audi S//6 Avant 73 BMW
> R60/5 mit
>  Toaster Tank
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-- 
Douglas in MN
95.5 Audi S//6 Avant
73 BMW R60/5 mit Toaster Tank