Hello!

I have an A4 Avant TDI and I'm having some strange problems.

a few minutes after I start driving when I step down the accelerator (asking for torque) the car vibrates like if it was a engine failing...
It looks like when the ESP is active but permanent. It looks like is cutting the throttle all the time...
It only does that some times and when it starts doing it stays like that for some minutes when I step on the accelerator. Last night It started to shake on the way home at 170km/h and a few minutes after the problem started the ESP turned and stayed ON until I stopped and restarted the car. This morning I took it for a ride and look OK..
Can anyone give an idea of whats happening??

Thanks
Regards

Rui
(from Portugal)