HELP ! Audi A6 Idle Problem

[radududuman]

Hi all,
I have got an Audi A6 2007 2.0 TDI BRE engine.
I have the following Issues:
-On Idle car shakes slightly
- When the car is running between 1600-2000 RPM I can feel the car shakes only when stationary when driving I can't feel it. Also when is cold if i run constantly between 1600-2000 RPM the car runs lumpy over 2000 RPM its fine.
- I have notice at old if I start the car and the coolant temperature is between 50-70 and I start the AC at full power the car judders a lot.
I can provide pictures in VCDS and I can scan it aswell.
The clutch and flywheel has been changed on the car 1 year ago, also O rings at the injectors, the diesel from fuel filter is clear as well. Throttle has been changed. EGR has been cleaned.
Please can someone help me?

[Crasher]

Any fault code?

SMF or DMF fitted?

[radududuman]

DMF fitted, It only has done 20-25k since was fitted
No fault codes in the engine, that is the most annoying
When running ok but still with the wobble
On Engine Mesuring Blocks:
Group 23 I have -63 -47 -64 -55
Group 13 I have -0.21 ; 0.00; -0.09; 0.28

[radududuman]

Hello,
Today when it did it again I disconnect MAF sensor and the car stop shaking and the idle was fine.
With the VAG I don t have any error for the MAF. Is this faulty but not "faulty"?

[Garry_M]

see my rev counter video, only happens at 75°C water temp (3.0TDI)
19 September 2015 - YouTube

[Crasher]

Do you get smoke from the exhaust after the engine has been idling for a long time?

[Garry_M]

no.

[Crasher]

I have just realised there are two cars here..... radududuman, your car sounds just like the problem in VAG Technical Product Information notice 2008919/14

1) Light juddering at constant engine speed and low load between 1200>2000 rpm
2) Slightly delayed accelerator response from overrun of 1000>2000 rpm
3) Accelerator operation insufficient in stop& go operation
4) Slightly erratic idle speed.

This due to the after injection during DPF regen and is normal, no repair or production change possible.

[radududuman]

Hi, my car does not have a DPF filter. Its my revs it does nearly the same as gary_m but my car is 2.0 BRE

[Crasher]

Does this match your fault?

1) A6 2.0L TDI - Idle speed fluctuates by 100 - 200 rpm at a coolant temp between 40 and 70 degrees centigrade.
2) Vehicle judders when accelerating during warm up phase.

If it does, get your local Audi dealer to see if your car is subject to TPI Transaction number 2015457/9 which involves a software update and/or a new EGR cooler seal.