Stumbling at low RPMs.... again.
 

I'm getting a stumble or hesitation while accelerating, relatively low RPMs (say between 1000-2000), VERY noticable in 1st and 2nd (think: a partial pull of the e-brake for a blink) but it's there in 3rd and almost unnoticable in 4th. VAG-COM says everything is ok. Replaced the temp sensor with a new green part a few weeks ago. All hoses connected and unbroken. New, pricey DV (name escapes me at the moment). Modshack stage 3.

Any ideas? It's getting quite annoying...

<img src="http://pictureposter.audiworld.com/101294/after2.jpg">

does it stumble only under boost?

How many miles?
 

What are the numbers for measuring block 32? (MAF check). Checked for misfires?

Could be fuel, plugs, coil paks...

read the post again...what boost am I talking about at 2K? lol

25K mi. on APR chipped car, VAG-COM challenged driver. How to get those block #s?

Easy...
 

Plug in the VAG, turn on the key (no need to start), go to engine/measuring blocks, and input 032 on the first section. Note + or - and give me the numbers!

Also check for faults and codes...

i'm curious to see what the result is..hope he responds

Re: similar problem
 

i took my car to the dealer, let it sit overnight for them to check and they say that they don't notice the issue and no fault code comes up. i don't understand how they cannot sense the 'hesitation, stumble, lurchiness, ****e' condition when driving out in 1st or 2nd. i'm seriously questioning the Audi technicians...

sitting in the car right now...
 

<center><img src="http://pictureposter.audiworld.com/101294/vag.jpg"></center><p>and here is what I get. Also, I have to correct my previous post. The stumble happens more like 2500-3500 rpm. (It's hard to drive this car and a big straight-6 and keep the rpms straight in your head... ;)

I think I see the problem...>>
 

A MAF going south. It would normally be +/- 5% for the partial throttle. With a Mofo you usually see a slight Rich correction (negative 4% or so). The +11% means the O2 sensors are trying to correct for not enough fuel. In simple terms, your MAF is not putting out a good enough signal to keep it all balanced....