I have a Citroen DS3 automatic VTI 120hp. There is a vibration in the car each time i put my foot on the gas when its at low speed like gear 1-2 keeps vibrating till i remove my foot from the pedal the vibration slows down. When im parked at N or P still vibrates. It also vibrates too much when the car is very cold. Would appreciate if someone could help me. Thank you!