[s-cars] Hesitation -- please help

[Adam Cramer]

Sean,
Are you referring to using Vag-com? If so, then no, I haven't. I have used 
the 'blink' method to check for error codes, but I didn't find any. 
 

 On 8/25/05, Sean Douglas <quattro20v at telus.net> wrote: 
> 
> Adam:
> 
> I assume you have checked for codes? It could be a knock sensor going
> bad, I had this same symptom in my 90q20v.
> 
> Sean
> 
> Sean Douglas
> 1997 Audi S6//RS2-spec
> 1990 Audi 90 quattro 20v
> 
> 
> > -----Original Message-----
> > From: s-car-list-bounces at audifans.com
> > [mailto:s-car-list-bounces at audifans.com] On Behalf Of Adam Cramer
> > Sent: Wednesday, August 24, 2005 10:09 PM
> > To: s-car-list at audifans.com
> > Subject: [s-cars] Hesitation -- please help
> >
> >
> > All-knowing S-car list,
> > Please, please help me figure out what is causing my
> > hesitation issues.
> > I finally got around to testing my coils tonight. I thought
> > this would
> > solve my hesitation (under load) issues, but all 5 of my
> > coils seem to be
> > fine. I used the adjustable spark gap tester and each of the
> > coils made a
> > nice clean, crisp, blue spark about 3/4 - 1 inch long. I
> > couldn't find a
> > weak one among them. I really tried to tell myself that the
> > #3 coil was bad,
> > but everytime that I would re-test it, the spark would come
> > back nice and
> > crisp. ARGH!
> > Symptoms include hesitation under load, especially in the
> > higher gears (4th
> > and 5th), although occasionally I will feel the problem in
> > 2nd and 3rd. It's
> > not violent jerking like the fuel is being cutoff, but more of just a
> > hesitation and general lack of consistent, smooth power to redline.
> >
> > Here's a list of stuff that I have fixed/checked/replaced so far:
> >
> > 5 new Spark Plugs (Bosch OEM)
> > 2 new POS units
> > New Fuel Filter (OEM)
> > New Air Filter (OEM)
> > Checked for air leaks
> > Checked for weak coils
> > Checked plug boots (good condition)
> >
> > Anyone have any other ideas, either electrical or fuel
> > related? I think I've
> > tested all of the electrical options. What about the
> > alternator? Any chance
> > a weak alternator would be causing this? I did have an oil
> > leak a few months
> > ago that caused oil to accumulate on the alternator.
> > More background on the car (if it helps you diagnose the
> > problem)......RS2
> > turbo, em, maf and injectors. IA chip. Forge BPV (yellow
> > spring). Another
> > issue with this car that I haven't been able to solve is that
> > the idle RPMs
> > fluctuate when warm. Usually between 800-1000. I doubt this
> > is related to
> > the hesitation issue, but I thought I would throw it out
> > there just in case. Any help is appreciated. Thanks, Adam
> >
> > This is definitely a love/hate relationship.
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> >
> 
>