Why Will Handle Shake After Shifting up to 4th Gear and Speeding up?

Some users have puzzles and ask questions online, why hanging up gears and speeding up will shake the handle. There are three possible causes.

1.Gearbox synchronizer slip sleeve, synchronous ring, gearbox shift forks, shift block or othe relevant parts wear and loose, the rotation of transmission cause the vibration that spread to the gear lever.

2.Rotation speed problem, that is often said, the high-gear but low-speed. It is fuel-efficient, but damages car engine, generally 1500 to 1800 rpm is proper, and also help quickly speeding up.

3. Driving habits, shifting up to the 4th gear too early in driving, the engine speed is not fast enough, thus causing handle vibration.