What causes the door to make a buzzing noise during normal driving?

[RobertRose]

The buzzing noise from the car door during driving is most likely caused by loose door hinges or interior trim panel rattling. If the door hinges are loose, the bumps generated while driving will cause the door to vibrate continuously, resulting in various abnormal noises, especially when driving on uneven roads. Here are some related explanations: 1. Tensioner pulley noise: Tensioner pulley noise is usually caused by excessive wear of the tensioner pulley bearing. When the tensioner pulley malfunctions, the engine may experience timing misalignment and valve timing disorder, significantly affecting the normal operation of the vehicle. Therefore, it is necessary to replace it promptly. If not replaced in time, the engine may experience severe shaking and wear, and may even damage the valves, leading to serious engine component failure. 2. Precautions: Conduct vehicle safety inspections before driving to avoid accidents.