Rear Brake / Caliper Issue - Ford Mustang Forum
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post #1 of 5 (permalink) Old 06-16-2019 Thread Starter
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Rear Brake / Caliper Issue

Hey everyone.

I have an issue but I am not 100 % sure what it is or what is causing it. Leaving work the other day I rolled my windows down because it was a nice out. I drive past the wall and garages, I hear this slow scraping sound (10-20 mph) reflecting off the wall about 3-5 feet away. Since then noticed the sound it has continually happened at those slow speeds and when the sound is able to reflect off of something. So, I stick my head out of the window and I determined that it is coming from the rear (drivers side). When doing the same test for the passenger side, I hear nothing.

I take the wheel off, inspect the rotor, caliper, and pads (as best as I can without taking them apart) No visible damage found. They look identical to the passenger side.

I hear no noise in the cabin while driving with the windows up, radio off, and back seats down at any speed. With my head sticking out the window I can only hear the sound while having something close enough for the sound to reflect back to me and seems to go away over 30 mph (or maybe the wind noise gets too loud) I don't feel any brake pulsing BUT during a hard braking test - it felt like the rears locked up slightly under heavy braking, though, I am not sure if this is normal or not.

Any ideas what this might be? I am still under my 3 year / 36, 000 mile warranty - but I thought I read something that consumable problems (i.e. brakes) were not covered.

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post #2 of 5 (permalink) Old 06-16-2019
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Quote:
Originally Posted by sirben View Post
Hey everyone.

I have an issue but I am not 100 % sure what it is or what is causing it. Leaving work the other day I rolled my windows down because it was a nice out. I drive past the wall and garages, I hear this slow scraping sound (10-20 mph) reflecting off the wall about 3-5 feet away. Since then noticed the sound it has continually happened at those slow speeds and when the sound is able to reflect off of something. So, I stick my head out of the window and I determined that it is coming from the rear (drivers side). When doing the same test for the passenger side, I hear nothing.

I take the wheel off, inspect the rotor, caliper, and pads (as best as I can without taking them apart) No visible damage found. They look identical to the passenger side.

I hear no noise in the cabin while driving with the windows up, radio off, and back seats down at any speed. With my head sticking out the window I can only hear the sound while having something close enough for the sound to reflect back to me and seems to go away over 30 mph (or maybe the wind noise gets too loud) I don't feel any brake pulsing BUT during a hard braking test - it felt like the rears locked up slightly under heavy braking, though, I am not sure if this is normal or not.

Any ideas what this might be? I am still under my 3 year / 36, 000 mile warranty - but I thought I read something that consumable problems (i.e. brakes) were not covered.
i had a similar sound, low metal grinding only herd in tight places. I think the mechanic moved something while i was up in the air giving it gas and that fixed it
I don't remember if it was the rotor splash shield. They do bend pretty easily might worth checking it out

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post #3 of 5 (permalink) Old 06-16-2019
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It could be your caliper hanging up on the pins. I'd have the dealership check into that as it could cause premature brake/rotor wear.
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post #4 of 5 (permalink) Old 06-16-2019
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It might even be a very small dust particle tiny "ball" of brake dust that is hard as a a rock that is stuck on the inside of the brake pad......agree with others, really need to get this inspected.....might be nothing important....but better to be safe!

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post #5 of 5 (permalink) Old 06-16-2019 Thread Starter
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Quote:
Originally Posted by Travis98146 View Post
It could be your caliper hanging up on the pins. I'd have the dealership check into that as it could cause premature brake/rotor wear.
UGH, on my old 98 Mustang the pins ALWAYS would rust and seize up.

I will have it looked at soon
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brakes , caliper , rotor , rotors , sound

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