What is the situation with gear shifting vibration?
1 Answers
Gear shifting vibration is caused by the following situations: 1. Severe engine carbon deposits: The most common cause of gear shifting vibration is a dirty throttle body or excessive carbon buildup in the fuel injectors. When there is too much carbon buildup inside the engine, the gasoline sprayed by the cold start injector will be largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture during cold starts, making it difficult to start. In this situation, the engine will only start easily once the carbon deposits have absorbed enough gasoline to reach saturation. After starting, the gasoline adsorbed on the carbon deposits will be drawn into the cylinders by the engine's vacuum suction and burned, causing the air-fuel mixture to become too rich. The engine's combustible mixture alternates between being too lean and too rich, resulting in vibration. 2. Ignition system issues: Poor performance of the ignition system or suboptimal spark plug firing can also lead to this type of fault. 3. Unstable fuel pressure: If the fuel pump's supply pressure is abnormal or the intake pressure sensor's readings are incorrect or malfunctioning, it can cause gear shifting vibration. 4. Aging engine components: Gear shifting vibration is also related to the aging of engine mounts (also known as engine mounts or cushion pads). Engine mounts are essentially the engine's shock absorption system, responsible for absorbing minor vibrations during engine operation. If the engine mounts are faulty, these vibrations will be transmitted to the steering wheel and the interior of the vehicle, causing noticeable vibration.
