What Causes a Piercing Buzzing Sound While Driving a Car?

[DiDaniella]

Here are the specific reasons for a piercing buzzing sound while driving a car: 1. Loose door hinges or interior trim panel rattles: Loose door hinges can cause the doors to vibrate continuously due to bumps while driving, resulting in various noises, especially on uneven roads. Poorly assembled interior door panels can also cause rattling. 2. Tensioner pulley noise: Tensioner pulley noise is usually caused by excessive wear of the tensioner pulley bearing. When the tensioner pulley fails, the engine may experience timing misalignment and valve timing issues, significantly affecting the vehicle's normal operation. Therefore, it needs to be replaced promptly. If not replaced in time, the engine may experience severe shaking and wear, and it may also damage the valves, leading to serious engine component failure.