Recently i picked up somebody from the airport and on the way back home suddenly when i changed gears the whole car started to ratle and i could not accelarate because the clutch pedal and the gas pedal was vibrating heavily and a few months before i had a boost leak and i could not find its cause does anybody had any issues like this? And does anybody know what could be the problem? The car is an a4 b6 2001 model 1.9tdi thank you!!!!