307 automatic gear malfunction

What is the malfunction of the automatic gear, which gives everyone the feeling of grabbing something from the back during a good day shift. thanks in advance for the answers.

If the warning lights are not on, clean the Throat butterfly. If the throat butterfly is dirty, it may kick during shifting as it cannot perform instant gas cutting. Transmission If the oil change time is over or the oil is low, the gear may have difficulty at the time of the change.