What Causes Abnormal Noises When a Car Goes Over Speed Bumps?

[StEmiliano]

Abnormal noises when a car goes over speed bumps are caused by loose or aged chassis components or shock absorber failure, as detailed below. Loose or Aged Chassis Components: There are many rubber bushings on the car's chassis, which can age over time. When these rubber bushings age, the clearance between some components on the chassis increases. As a result, the chassis may produce abnormal noises when driving over bumpy roads or speed bumps. Shock Absorber Failure: The shock absorber's role is to dampen the oscillations from the spring's rebound after absorbing shocks and impacts from the road, reducing vibrations in the frame and body, and improving the car's driving stability. When the shock absorber fails, it can also cause abnormal noises.