Car Makes Thump Sound When Driving Slow - What Could It Be?

Technical Discussions
1

I’ve recently noticed a thumping sound coming from my car when I drive slowly, and it’s starting to worry me. Here’s what I’ve experienced:

  • The noise seems to be more pronounced when I’m making turns.
  • It happens mostly under 20 mph.
  • I’ve checked the tires for visible damage, but they seem fine.

I suspect it could be a few things, but I’m not sure how to narrow down the culprit. I’ve heard that it might be due to:

  1. Tires - Could it be uneven wear or a balancing issue?
  2. Wheel Bearings - Is this a common sign of a failing bearing?
  3. CV Joints - Could the noise be related to these if it’s more noticeable when turning?
  4. Suspension Issues - Could worn out bushings or components play a role?

It would be great to hear from anyone who has dealt with a similar issue or has expertise in automotive troubleshooting. Any advice on diagnosing the problem or steps I could take before going to a mechanic would be much appreciated! Thanks in advance for your insights.

2

I can relate! A thumping sound at low speeds usually points to suspension issues. It could be worn-out bushings or struts that need to be replaced. Have you checked those?

3

Good point! It’s also worth checking the tires. Sometimes a separation or bulge can cause weird noises. They might look fine but can still be problematic.

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4

Another possibility is a loose exhaust system. If something’s hanging there, it could create a thump when driving slowly. Maybe take a look under the car?

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5

I once had a similar issue, and it turned out to be a failing CV joint. Those can make a thumping noise when turning at low speeds too. Don’t overlook the drivetrain!

6

Great thought! Also, don’t forget about the wheel bearings. A bad wheel bearing can thump too, especially under load.

7

If you’re not mechanically inclined, this can be overwhelming. Just take it to a mechanic and describe the sound. They’ll know what to check.

8

Very insightful! A failed CV joint could also cause vibration, not just thumping. Definitely something to consider.

9

Could it also be something with the brakes? Sometimes worn brake pads can create odd noises at low speeds, especially if they’re not engaging properly.

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10

What’s really baffling is how many factors can contribute to a simple thumping sound. Each vehicle is different, and what works for one might not work for another!

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11

Support is all you need! Take a deep breath. You’ve got lots of options to explore. And don’t neglect regular maintenance; it can prevent these issues altogether.

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12

I second that! Brakes should always be on the checklist. You don’t want that thump to become a bigger problem!

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13

It might not be all that serious. Sometimes rocks or debris caught in the wheel well can cause noises too. Just make sure to check there!

14

Absolutely! They can quickly diagnose and give you peace of mind. Don’t wait too long if it’s bothering you.

15

Sounds like a real headache! Just be careful; avoid too much speed until you sort it out. Thumping noises can indicate issues that could lead to bigger problems.

16

Thumping noises at low speeds? Sounds like a bad remix of car issues! All those mechanical problems definitely need a specialist’s ears.

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17

Although that’s a simple fix, at least it’s something easy to check before diving into deeper issues!

18

It sounds like you might be dealing with a suspension issue. Have you checked for loose parts underneath the car? That thump could be a sign of worn bushings.

19

Good point! If you can, try to listen closely to where the sound is coming from—front or rear? It could narrow down the source significantly.

20

Definitely check your tires! Sometimes, a flat spot can form if they’ve been sitting too long, leading to a thumping sound when driving slowly.

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