Old sway bar bushingsīad sway bar bushings are often responsible for that annoying clunking noise underneath your car. When you drive over bumps, the engine movement will cause the chambers inside the converter to rattle against each other. If your catalytic converter is damaged, rattling sounds are expected, as it contains small chambers that can become loose if worn out or faulty. They won’t perform their functions correctly if worn out, hence the rattling. Shocks are designed to absorb the impact of those inevitable bumps in the road. Worn out shock absorbers/strutsĪnother common culprit of noise when going over bumps is worn-out shock absorbers and struts. If you’ve noticed rattling when driving over bumps, check whether your anti-roll bar drop links are worn out or whether they’ve snapped. Bad ball joints are one of the primary causes of unexpected clunky noises. Having a bad ball joint affects your vehicle’s handling. These are some of the most common causes of this pesky problem: Bad ball joints
What Causes Rattling Under A Car When Going Over Bumps?įrom a bad control arm bushing to corroded shock absorbers, there are many reasons your car makes an annoying rattling noise when you drive over bumps in the road. If your car is making a rattling or clunking noise as you drive, it could be a sign of a severe problem. Whether your car is brand new or 20 years old, it should be able to get you from A to B without any issues.
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