While repair techniques vary between different manufacturers and car models, there are a few steps you can take to identify those annoying rattling noises. How To Fix Rattle Noises Underneath A Car If you hear chain rattling or slapping noises when your car drives over bumps, you’re likely hearing a loose timing chain hit against its cover when it rotates. Chain rattling sound when driving over bumps It may also be down to exhaust pipe corrosion. If the noise is coming from the back end of your car, it’s likely to be an issue with your suspension or a faulty catalytic converter. Check for bad sway bar or control arm bushings. If the noise is coming from somewhere in the front end of your vehicle, it could be an issue with your struts, timing chain, or suspension system. If you notice a clunking or rattling noise coming from your front wheels, it’s likely that a ball joint is failing or that a tie rod end has come loose. Read on for the most likely cause of rattling from each area of your vehicle, from the steering wheel to the exhaust system. This comprehensive guide is great for diagnosing and troubleshooting your car’s problem. To diagnose the problem, you’ll need to determine where the rattling sound is coming from. This can lead to a rattling noise from your exhaust. If your exhaust pipe is exposed to moisture and other undesirable weather conditions, it will likely corrode. If you’re noticing extra noise when going over bumps and when turning corners, your sway bar bushing may need replacing. 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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