Trembling and humming in the vehicle

Hello friends,

Two days ago the transmission's upper ear of my car changed. After changing, the engine started to vibrate more than before, and when I was in a normal course, when I pulled my foot out of the gas, a buzzing sound started to sound. Does anyone have a problem or have an idea like this? By the way my car is 2003 model 307

Respects

When the earbuds are new, it is natural to get harder reactions in the engine brake than before, but it is difficult to talk clearly for the hum, the balls can make some sounds until you get used to the new position, but after a while the stones will fit in place, if it is not very disturbing, use it for a while and if it does not improve, use it for a while.

I also have a tremor in the car until 4 revs in a certain period of time, but I couldn't find the opportunity and show it to the master.