Shaking
 

hello, how you doing?

i have an audi a4 2.8 v6 quattro 1998 automatic triptronic.

the problem is when i go like in 3 or 4 gear, the car start to shake a little bit (no matter if the car is in automatic or with the triptronic).

The slippage occurs in either of two situations: 1) during slight acceleration (feathering-in the gas pedal) on upward inclines without initiating a downshift (which I consider an engine lugging situation), and 2) during slight acceleration immediately after deceleration at 50-60 mph range. The slippage does not occur hard acceleration. No fault lights (red or yellow) are lit and VAG-COM scanning shows no DTC faults in any controller.

Someone told me that it was a faulty torque convertor, i want to know if this diagnostic is right? where i can buy that part over the internet? or if it's possible to repair it? Or how i can fix this problem?