There seems to be a failure in the transmission. It vibrates when changing to first and second gears. It is only four months since I bought the vehicle and lots of tests have been made and pieces changed, but nothing seems to be working. I also sometimes find it powerless and not even the fuel performance is the one I expect.

Speed reaches 50mph starts to shake or jerk

Vibra cuando alcanza las 40 millas, como cuando uno pasa por las ranuras que están a la orilla de la carretera tacoma 2013 sport se reparó todo lo interno nuevo y sigue con el problema alguien sabe a que se debe?? O como corregirlo.