[Vwdiesel] While I had a VAG COM...

LBaird119 at aol.com LBaird119 at aol.com
Thu May 28 23:26:07 PDT 2009


  Dad's Passat has lurched/surged pretty badly ever since we chipped 
it.  Pretty much any time it's below 1,600 RPM and not accelerating 
or decelerating.  25 MPH is borderline a 2nd gear occasion.
  I had instructions to take the 13,xxx number in the settings thing 
and drop it by 100 to start with.  Did that and Dad said it's a whole 
new car!  He's happy, even though the Golf doesn't start.
  I have the same problem only very lightly so, I went to do the 
same thing on mine.  Got into the section though and it only 
had 87 as the number.  The mg/stroke had been 2.2 on Dad's 
and it upped it to 3.4 - 3.6.  Mine was sitting at 9.7 or something 
like that!  Hmmm, didn't want to add MORE fuel, which is the 
"solution" so I started increasing the number to try and hit something 
close to the number that worked for Dad's car.  I got to 132 and 
that was the end.  It got down to 3.6 - 3.8 which took the fuel 
consumption from .74l/h to .34l/h or something about that.  Quite 
a change!  It smoothed out the stuttering or "shudder" as well!
  Odd thing is there's a section with injector compensation for 
"smooth running."  I figured that would show a bad injector if one 
number had much compensation on it, which mine did, all negative. 
So, I rechecked Dad's and it had basically the same thing only they 
were all positive numbers.  Guess it doesn't do what I was thinking?
 Couldn't find where to bump up the idle either.  So much to do and 
so few access codes!
     Loren


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