Auto Repair - Roadshow forum

Question

Car braking scraping noise

by jacobburdis / February 14, 2018 5:29 PM PST

Are any of my friends mechanically inclined that can help me diagnose something. This video is the sound my right rear wheel is making. I had the brakes checked and they are nearing the end, but not metal on metal (according to the mechanic). The sound is slightly heard when lightly accelerating from stop and is loud when applying the breaks to a complete stop. https://www.youtube.com/watch?v=29VUzY24SJQ&feature=youtu.be

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Clarification Request
Are you dragging something underneath?
by James Denison / February 15, 2018 12:45 PM PST

Sounds more like someone dragging a muffler along the ground. Look under there.

All Answers

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Answer
Car braking scraping noise
by smithjohnson11 / February 15, 2018 2:41 AM PST

First of all, the given YouTube link is not working. So I cannot check the issue. Please send a working link so I can check the issue and let you know the proper solution.

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Answer
A number of possibilities
by Steven Haninger / February 15, 2018 6:08 AM PST

What would be good is to jack up that side and spin the wheel by hand. This could be cause by;

1. The automatic adjustment mechanism having move the linings too close to the hub.
2. The hub being "out of round" or not properly torqued (use a torque wrench and not an air impact wrench).
3. Bad wheel bearing.

You can try backing out the star adjustment to see if it goes away for a while but, when you back up the car and apply the brakes, the adjustment kicks in again. So chock the other wheels, jack up just that wheel, disengage the parking brake and give it a spin.

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