LOG analysis Audi 2.5 AKE - uneven engine running

Hello,

After the turbo replacement (Link to the post) and after some time of relaxed driving, it's time for the AKE (automatic climate control) to start driving me crazy again.
I think it's really starting to look like a "Monday car" soon.

"Recently, I've noticed increased vibrations starting at around 2500 RPM (I've tried reading all the relevant posts in the forum). However, these vibrations don't always occur; there are also days when the car drives normally."

After driving at full speed for a while, it vibrates excessively even when idling at the next traffic light -> the "strange" thing is that the next day, it drives normally as if nothing happened.

Today, on my way home, I tried to create 2 LOG files. Unfortunately, they didn't turn out perfectly due to the heavy traffic on the highway (I have uploaded them under Link zum Upload). Could someone who understands this take a look? - Thank you.

I think it's probably related to the fuel injection system somehow? Because, based on the many threads about it, my injectors and glow plugs would have been due for replacement a long time ago. Which control modules in VCDS are best suited for an investigation in this direction? And why does it sometimes run perfectly normally without any vibrations? What environmental factors could have such a significant impact (I haven't yet analyzed which days these are - warm, cold, dry, wet, etc. - if that even makes sense)?

Thank you in advance for any help you can provide. Answers and tips -> Best regards, Toni.

Hello,

It could be the ZMS (Zylinderkopfmotorsteuerung - cylinder head engine management system), but it could also be due to a faulty injector nozzle or the ZK (Zylinderkopf - cylinder head). Take a look at MWB 13 and 14.
Strong positive or negative values that shift from one cylinder to the next: more likely a crankshaft main bearing (ZMS). Significant deviations in individual cylinders: more likely an injector or valve timing issue.

Best regards, Rainer.

Hello,

I just wanted to provide an update: the jerking/shaking is now gone. It was either the clutch or the dual-mass flywheel (DMF). I had both replaced, and now it drives normally again.

Best,
Toni

Thank you for the feedback!