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hello,

I have Audi A4 B6 2002, 2.0L.
Lately i get this problem with the transmission.
only when the engine is running for few minutes and gets to the normal heat of 90 degrees, I cant strat driving unless i'm pressing the gas all the way down, and the first gear is integrated with hard bump to the engine (like someone hits the car in the back).
beside that, all gears are smoothly switches and the problem not happend when the engine is cold (the 1st gears integrated smoothly when i start driving in the morning).
Its seems like when the engine is hot the oil pressure decrease and the gear is not switch from neutral.

Any advice will help.

 

Is this the tiptronic transmission or manual?

Assuming that it's the tiptronic, does it make the "clunking" sound as soon as you shift it into D, or only after you press the accelerator?

 

Here are more details i found about the car:
It is not FSI or the 20V and AWD. the transmission is 6 gears continuously variable. there is no visible fault on the dashboard computer screen, non of the fault lights are on. everything seems to be absolutely normal beside the problem i described. there are 140K Kilometer on the odometer.
Hope these information completes the view of the situation