[s-cars] Misfire Diagnostic Help

[Tom Green]

I don't know that I can point you directly at a solution, Chris, but  
perhaps you will stumble on it.  You probably know about Scott  
Mockery's business web site <http://www.sjmautotechnik.com/> since it  
is the most common source for learning blink codes.  If not, shame on  
you, go there now.  Anytime you read codes, clear them after recording  
them.  You did not mention the CEL or MIL  as Audi names it.  You  
should run the output tests to check that the injector functions  
electrically.  Your post reads like you are doing most of your own  
maintenance.  As Wyley suggested, clean the MAF connector plug and see  
that the MAF and air intake are clean also.  Deoxit from Radio Shack  
or online at Caig Labs is a good electrical cleaner/enhancer and  
cheaper than Stabilant 22.  Swab the injector connectors also with  
some of those electronic store swabs with the little ends.

It would probably not be a waste of money to have the injectors  
cleaned/tested by one of the well-known shops.  <http://www.rceng.com/ 
 >     <http://www.mrinjector.us/> , or  <http://fuelinjectorconnection.com/shop/ 
 >    come to mind, but a local shop could work.    It would be nice  
to know the fuel pressure, but maybe not essential  yet.

Since you are still blinking after 7 years or more with the 200/20v,  
you must not need this information often.  You are missing out on some  
information stored by the fault code that you simply cannot read with  
the blink code.  The VAG-COM software is available free in the Lite  
version that works very well with these cars.  All you need is a  
windows laptop running windows XP maybe (you don't want to be too new,  
I don't think, but the ross-tech.com web site has details on that, I  
believe)  Then, you can buy one of those cheap cables on ebay and the  
2X2 adapter available there also.  These will run the lite version for  
free or registered for $99.  Either is fine, but will make diagnosis  
so much easier, and reset your service codes as well.

Wylie mentioned quattroworld.com UrS4/6 forums for help and a great  
FAQ also.  There are several posters in CT on that forum also-some in- 
person help beats this long distance stuff every time.  Someone local  
might just have a few spare parts to help diagnosis along as well.


Tom '95 S6
          '95.5 S6 avant
Knoxville, TN


On Sunday December 11, 2011, at 6:42 PM,  Chris Hemberger <cehemberger at sbcglobal.net 
 > wrote:

> Hi Folks - have owned my S6 Avant for ~7 yrs & ck the site from time  
> to
> time;?have never posted but the time has come..? My car?w/ ~160k has  
> developed a
> misfire/rough running condition that I'm looking for some assistance  
> in
> troubleshooting. Car is stock other than a Stage 1 modded-ECU (MTM  
> as I recall)
> & has had the Apikol coil-conversion for 3yrs; I'm getting a '4411'  
> code
> indicating a problem w/ the #1 injector. Swapped coils around (and  
> even tried a
> new one..), pulled the injector connector and the condition worsens  
> which would
> indicate the injector is functional to some degree?- which leads me  
> to my
> question: do the injectors experience 'partial' failure which might  
> explain my
> situation??Selectively disabling each injector on each of?the  
> remaining
> cylinders?results in degraded operation. Have run out of diagnostic  
> ideas &
> thought I'd come to the experts - any suggestions/questions welcomed!
> Thanks,
> Chris Hemberger
> Amston, CT
> '91 200q Avant
> '95.5 S6 Avant