Poor running 3B

Mon Nov 22 18:09:54 PST 2010

After reading this thread, Im thinking your right. If you unplug the MAF and 
nothing happens, its a really good clue. Thats what helped me determine what my 
issue was. I did get a MAF code though from vag com. Just to be sure, (and if 
youre bored) you can tone out the wires from the ecu to the maf to make sure 
they are happy and low resistance (under 1 ohm) as well as pin 1 on it which 
should be a good solid ground. Make sure the pins in the connector arent green 
too...but it sounds like youre on the right track.

----- Original Message ----
From: "PeterBergin at aol.com" <PeterBergin at aol.com>
To: walbum1 at verizon.net; 200q20v at audifans.com
Sent: Mon, November 22, 2010 4:41:22 PM
Subject: Re: Poor running 3B

I did loosen a line at the filter, gas squirted out.  Just can't  
understand why it would not be the MAF if the condition is the same when I  
unplug 

the harness from it.
Thanks, Pete

In a message dated 11/22/2010 3:37:18 P.M. Central Standard Time,  
walbum1 at verizon.net writes:

Hi  Pete,

I had a similar condition with a non-Audi, figured I'd pass the  info 
along. 
I haven't followed the thread closely so maybe this was  already covered. 
Anyway the car was (still is) a Volvo with a Ford engine  transplanted, so 
everything is suspect.  I found that I could idle up  a hill (very light 
throttle actually) that I could not drive up  accelerating normally.  The 
culprit was the main fuel pump (there is  also an in-tank pump).  I 
replaced 
it with a known good used pump  ($10), still going strong.

HTH,

Andy
'91 Avant 301K  miles
'91 Volvo 745 5.0 V8

----- Original Message ----- 
From:  <PeterBergin at aol.com>
To: <PeterBergin at aol.com>;  <group44_us at yahoo.com>; <bradyzq at hotmail.com>;  
<auditony at gmail.com>; <200q20v at audifans.com>
Sent: Monday,  November 22, 2010 4:10 PM
Subject: Re: Poor running 3B

>  Pulled the codes today, the old 2121 kept repeating itself (used to  
have
> an intermittent light) cleared the old ones.  All I get with  the  motor
> running is 4413 (fuel injector 3) continuous, repeated  its self at least 
> 25
> times before I turned the key  off.
>
> Did the manual engine off click and buzz test, everything  fine, felt and
> herd 5 clicks on all injectors, any everything else  clicked as normal.
>
> Car cold starts fine, once I give it gas it  hesitates and misses, only
> takes gas if I apply the pedal very  gently.
>
> Unplugging the MAF makes no difference in running, no  worse, no  better.
> Should I be looking for a used MAF.  If  so any one have  one.
>
> Looking for a way out of this with  out going to the shop or replacing a
> bunch of stuff I don't  need.
>
> Any Ideas?
>
> Thanks, Pete
> 91  Avant
>
>
>
> In a message dated 11/22/2010 6:23:46  A.M. Central Standard Time,
> PeterBergin at aol.com  writes:
>
> Cap,  rotor, wires, plugs and wires have  about  40k on them.   Look  good
> and
>  dry.  Started car yesterday no difference, am going to  pull   codes 
today.
> Thanks, Pete
>
>
> In a message  dated  11/21/2010 9:07:32 P.M. Central Standard Time,
>  group44_us at yahoo.com  writes:
>
>
> Its possible, but I  wouldn't condemn it yet. You mentioned  ice storm and
> rainy...  how old are your wires? how about the cap and  rotor? Id pull 
>  that
> and  dry them off first and see what that does.  If  they are new and 
> decent
> then you  might be looking at a  maf. When  my MAF went it was pretty 
> smokey
> at
>  idle and  couldnt pull any boost  at all. not even 1   psi
>
>
>
>  ____________________________________
> From:   "PeterBergin at aol.com"  <PeterBergin at aol.com>
> To:  group44_us at yahoo.com;  bradyzq at hotmail.com; auditony at gmail.com
>  Cc:  200q20v at audifans.com
> Sent: Sun, November 21, 2010  4:56:03   PM
> Subject: Re: Poor running  3B  ---FIXED!---
>
> Think you jinxed  me!  Was driving home  in the worst ice storm I have 
> seen
> in   Minneapolis.  Car suddenly starting running like  crap.   Bucks,  
wont
> usually idle unless I hold the peddle down a   bit, must  accelerate very
> slowly
> to make any   speed.  Bummer!
>
> Car  ran perfect before, however had  two intermentant codes.  O2  sensor
> and
> ISV.   Have had an O2 sensor on order, first one came in  wrong   part.  
Did
> not pay much attention to the ISV because the   car ran perfect  (238k
> miles).
>
> Unplugged the MAF  sensor, no  difference in car running, pressured  turbo
> and  vacuum system to 15  psi, no leeks, pulled and cleaned MAF, no
>  difference.
>
> Started to  rain again (have to work out  side) so I quit for the  day.
> Will
> clear and pull codes  tomorrow.
>
> Think I am on the right path with  the  MAF?
>
> Thanks
> Pete 91 Avant (never breaks down during  good  weather)
>
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