[s-cars] Tired and Frustrated

[brian hoeft]

sounds very much like my condition, though i believe mine to be more boost
level related and not so much RPM related.

i match your list of tested/replaced/fixed with the only other difference
being my use of dahlback programming.

in addition, i have also replaced my wastegate diaphragm AND im looking at a
year as opposed to 6 months so consider yourselef lucky there.

BIG_UP to mark at hess' copy center.. about an hour ago i just picked up
(for $7.79) my freshly bound/double side printed copy of VAG-COM's printable
manual.  out of those 75 pages, im going to be in the 'measuring block' and
'data logging' sections quite a bit with hopes of better diagnosing whether
im looking at a air, fuel or boost issue.

if you have the cables you might benefit from doing the same.

good luck to us both.

equally frustrated, //brian


On 6/30/06, Kevin Barnett <bluevr6 at yahoo.com> wrote:
>
> Ok, so for 6 months, I have been dealing with poor
> running condition.
>
> Current behavior: At anything other than WOT, car
> pulls fine and revs to redline with power. At WOT,
> miss above 4000 rpm.  Also regardless of throttle
> position, there is a stumble at 2000 rpm
> (intermittantly).
>
> Replaced:
> Spark plugs
> plug boots
> cps
> bypass valve
> (all the timing belt stuff)
> Engine speed sensor
> Fuel filter
>
> Tested with known good:
> Stock computer
> PSO / POS's off good running car
> entire coil rack off good running car
> MAF (with new one)
> Intake air charge sensor
> throttle position sensor
>
> Have fixed:
> Several vacumn leaks
> replaced most hose clamps with Breeze Clamps
>
> Car currently equipped:
> IA Stage 3+ (chips + 3.0 bar pressure tranducer)
> Hoppen upgraded hoses
> Stratmosphere Bypass valve
>
> Checked:
> all boost and vacumn hose clamps for tightness (both
> cold and hot)
> moisture trap (bone dry)
> Boost and vacumn with mechanical guage
> computer codes (none)
> Fuel pressure (within spec)
>
> Cleaned out:
> Throttle body
> intercooler
> hoses (including cross over tube)
>
> Turbo has little to no shaft play.
> Fine film of oil on cold side.
>
> What do I need to be looking at for high RPM miss if
> not ignition or fuel supply?
>
> Anybody in North Cackalacki got a Mity-Vac I can
> borrow?
>
> Thanks,
> Kevin
>
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