What Causes Sudden Abnormal Noises from the Car Chassis?
2 Answers
The cause of abnormal noises from the car chassis is issues with the suspension system. Abnormal noises from the suspension system: The suspension system of a car connects the car body to the wheels using springs and shock absorbers. Its function is to provide cushioning and shock absorption when driving on uneven roads. If the suspension system malfunctions, the car body cannot achieve shock absorption, and vibrations leading to abnormal noises are inevitable. Abnormal noises caused by the suspension system are generally dull or crisp impact sounds. Abnormal noises from the constant velocity universal joint: The constant velocity universal joint, commonly known as the CV joint, primarily functions to transmit power and facilitate steering. If the constant velocity universal joint is severely worn, the vehicle may produce abnormal noises similar to "clattering" when turning during driving. Once the side from which the noise originates is identified, replacing the constant velocity universal joint can resolve the issue.
My car's chassis suddenly has abnormal noises, which is quite common and usually caused by loose or worn components. Suspension system issues are the most frequent, such as loose shock absorber connecting rods that clunk on bumpy roads; unstable brake components like calipers that produce metal grinding sounds when braking; detached exhaust pipe joints that bang during vibration; gaps in the steering system's tie rods that squeak when turning; or missing screws in the underbody armor that cause collision noises. As an experienced driver with years on the road, I suggest you pull over immediately and take a quick look underneath for any obvious looseness or scratches. If everything seems normal, drive slowly to a professional shop for inspection. Have a technician use tools to diagnose the suspension and brake systems—don’t delay, as minor issues can escalate into major accidents, like losing steering control. Regularly avoid potholes and glance at the chassis during routine car washes to reduce risks.
