What Causes the Abnormal Noise Inside the Car When Driving on Bumpy Roads?
2 Answers
Abnormal noises inside the car when driving on bumpy roads mainly originate from two aspects: the suspension system and the braking system. Here is a detailed introduction: 1. Suspension system noise: The condition of the car's shock absorbers directly affects driving comfort and safety. Whether they need to be replaced depends on the mileage or service life. The service life of ordinary shock absorbers can reach 100,000 kilometers. If there is obvious abnormal noise when driving on bumpy roads, it is usually due to damaged or leaking shock absorbers, which need to be replaced. 2. Braking system noise: Braking noise occurs in various types of vehicles, sometimes even in new cars, especially in low-temperature environments. Most performance cars use high-temperature brake pads with a large friction coefficient. If the temperature is not reached, abnormal noise will occur, which can be resolved by replacing the brake pads.
Last time I helped a neighbor check a similar issue. That bumping noise is most likely loose parts, like the clattering sound of a drawer not fully closed. Focus on these key areas: unsecured items in the glovebox can rattle, the rear cup holder not popping up properly makes clicking sounds, and seatbelt buckles hitting the B-pillar are common. For the chassis, check if the fender screws are loose – a deformed engine skid plate scraping the exhaust pipe is particularly annoying. If the spare tire compartment in the trunk isn't secured properly, you'll hear obvious clunking over bumps. Oh, and plastic dashboard components expand and contract in summer heat, making creaking noises worse over potholes. If you can't locate the source, first remove all loose items from the car and test drive – it's often culprits like phone mounts or sunglass cases causing the mischief.
