[s-cars] Hesitation -- please help

[Sean Douglas]

Hmm, I'm pretty sure the blink method tells you the same thing as
VAG-COM or the official VAG 1552, but I think the VAG just gives more
detail.
 
Sean
 

-----Original Message-----
From: Adam Cramer [mailto:crameradam at gmail.com] 
Sent: Thursday, August 25, 2005 8:52 AM
To: Sean Douglas
Cc: s-car-list at audifans.com
Subject: Re: [s-cars] Hesitation -- please help



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> 
> [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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