Just bought a 99 a4 estate 110 diesal,in pelican blue,super car,but i have seen a wee problem that im looking an answer for,the previous owner said he had a timing belt fitted and i notice that the car seems to bounce the engine,when you have you hand on the gear stick it vibrates as well and the rear back exhaust bounces up and down as well,the car drives fine,not missing and no lag in the turbo,could the timing on the pump be wrong,cheers Normski

May not have been put back in when T Belt was changed.