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A4 B8 2.0 TDi CAGA Quattro - Jerk and thump on letting off and acceleration

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Old 02-18-2015, 01:00 PM
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Default A4 B8 2.0 TDi CAGA Quattro - Jerk and thump on letting off and acceleration

Hi Audi guys

I have problem with my car. Something strange I have on my board computer.
When I select NEUTRAL on gearbox on my board computer is still info about gear change (manual gearbox). Sometimes is this there few seconds and then gone. Sometimes split of second and sometimes board computer is without this strange info.
On video I can show you what I mean. Look please too on split second info about GEAR 1 ! but it was on NEUTRAL... I didn't shift and didn't touch gear stick. I think that some sensor is bad inside car ? VAG diagnostic is completly clean. No info about any sensor. Sometimes I have info about Power Management only (4years old battery maybe)
I have problem too with jerk or thump on letting off or acceleration sometimes. Maybe it depends because car is crazy from this ,,BUG,, ??
Can you tell me what is on yours cars ? Somebody has same problem ?

For translate....
Neutral - Neutral
Brzda - Brake

https://www.dropbox.com/s/wr0wi2kx6edvj5l/AUDI.mov

Thanks for any help. Ufff
Old 02-19-2015, 10:23 AM
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The display of a wrong gear is normal (when the car is moving). My conclusion is that there is no sensor in the gear box. Instead the computer guesses what gear is active by the relation between engine speed and the car speed. This is also the reason why it doesn't display any gear until the car starts moving.
Old 02-19-2015, 10:26 AM
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I have two sensors on gearbox. Type is LLR 6 speed manual quattro. I'm looking for Audi technical list for services. Maybe there will be description for this.
Old 02-25-2015, 01:21 PM
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Default Next strange thing,...

https://www.dropbox.com/s/ttr0egcvu2...%2055.mov?dl=0

Every power change, revs ,,jumps,, and I feel thump or jerk under car.
What's the problem ? Somebody can compare this with your car ?!
6speed manual quattro. 01 ECU is clean ;-( No error code there.
What I have to check ? Differential or torsen is broken ?!..

Thnx
Old 02-27-2015, 08:14 AM
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Originally Posted by krysimlade
https://www.dropbox.com/s/ttr0egcvu2...%2055.mov?dl=0

Every power change, revs ,,jumps,, and I feel thump or jerk under car.
What's the problem ? Somebody can compare this with your car ?!
6speed manual quattro. 01 ECU is clean ;-( No error code there.
What I have to check ? Differential or torsen is broken ?!..

Thnx
Check out this thread...maybe similar to what you are experiencing?

https://www.audiworld.com/forums/q5-...nsert-2876848/
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