A6 c6 v6 tiptronic bouncing under deceleration

Diskutiere A6 c6 v6 tiptronic bouncing under deceleration im Motor, Antrieb, Abgasanlagen Forum im Bereich Audi Technik Forum; Hi everyone, sorry for my post in English but I am not enought skilled to post in German. My a6 c6 has a quite strange behavior, it is a 171kw...
Jeremie

Jeremie

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Hi everyone, sorry for my post in English but I am not enought skilled to post in German.

My a6 c6 has a quite strange behavior, it is a 171kw Quattro tiptronic diesel from 4/2007.

Basically upon acceleration there is absolutely no problem the car shifts good and torque converter is quite stiff and does not slides under strong throttle .

it is when and only when I release my foot from the accelerator pedal that a problem happens

the problem occurs when the car shifts down. At each gear change the engine speed increases due to the engine brake phenomena but just after that the engine speed is bouncing from about 200 rpm and this I can feel it when the car is deceleration it makes it shaking me.

the phenomena ends only when i am near to be stopped.

have you ever seen that ?

I have searched a lot on internet nothing on French and English forums ...

I have recently made an oil change, and it has changed nothing...

i was was thinking to solenoids but no error code found with VCDS ...

I have tried to initialize the gear box to make new learning so but it did not changed anything

so the two only thing I had in mind were :

1/ the mecatronic unit which could be dirty or have a solenoid not moving correctly

2/ a wrong software or not to up into my gear box ... Do you think this can be a root cause ?
 
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A6 c6 v6 tiptronic bouncing under deceleration

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