What Causes the Abnormal Noise When a Car Bumps?

[LaAmir]

Most of the abnormal noises when a car bumps are due to the aging and hardening of the shock absorber top rubber. There is rubber at the connection point between the vehicle's shock absorber and the body, known as the shock absorber top rubber. The function of this rubber is to provide cushioning for the body and reduce vibrations. Over time, the rubber ages, and aged rubber hardens, causing abnormal noises from the body when driving over bumpy roads. Additional information is as follows: Antifreeze Usage Tips: Antifreeze is best used year-round. In addition to its antifreeze and cooling functions, antifreeze also has cleaning, rust removal, and anti-corrosion effects, reducing corrosion in the radiator and protecting the engine. Pay attention to selecting the correct color of antifreeze and avoid mixing different types. Brake Fluid Usage Tips: The functionality of the braking system is closely related to the brake fluid. When inspecting or replacing brake pads, brake discs, and other hardware, don't forget to check if the brake fluid needs to be topped up or replaced.

[VanIsabelle]

Whenever my car makes noises on bumpy roads, I know there might be an issue with the chassis. Common causes include faulty suspension components: for example, leaking shock absorbers or aging springs that creak when going over bumps; loose stabilizer bar link bolts that produce metallic clunking sounds when the car bounces; and worn control arm bushings that squeak on uneven roads. Worn wheel bearings can also cause sharp noises. I recommend stopping immediately for a quick check: first, inspect if the exhaust hangers are loose, then gently shake the car body to listen for the source of the noise. Don't ignore it—if a component fails completely, it can lead to unstable handling, which is especially dangerous at high speeds. Visit a professional repair shop as soon as possible for a thorough inspection, and routinely check these areas during maintenance to prevent failures. Safety comes first—unusual noises are warning signals.

[Martha]

The car makes strange noises on bumpy roads, which I often encounter, mostly due to loose suspension or chassis components. If the shock absorber is damaged, it can't absorb the force from road impacts and will make noise; if the mounting points of the stabilizer bar are loose, it will produce a clunking sound; if the ball joint of the control arm is worn, it will squeak when going over bumps. Wheel bearing issues can worsen the noise when turning on bumpy roads. I've also experienced brake calipers not being tightly secured, making a clicking sound upon impact. During long-distance drives, I usually shake key components to check for looseness or listen for noise locations when parked. Addressing these issues promptly can prevent small problems from becoming major ones, otherwise, repairs can be costly and time-consuming. During regular maintenance, remind the mechanic to check these areas to ensure smooth driving.

[DelCourtney]

I haven't been driving for long, and I'm quite worried about the noise coming from under the car when going over bumps. It could be loose suspension components, like worn-out springs or shock absorbers, which make a creaking sound over bumps; a loose exhaust pipe hanger might produce a clanging noise. If there's an issue with the wheel bearings, the sound is usually sharp. I've learned to do a simple check: after parking, listen to see if the noise is coming from the front wheels or the chassis. If unsure, it's best not to wait—take it to a repair shop to get it checked out to avoid any accidents on the road. This way, I can drive with peace of mind.