Weird Metal Grinding Noise While Driving - Acura TSX Forum
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post #1 of 16 (permalink) Old 07-08-2008, 11:06 AM Thread Starter
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Question Weird Metal Grinding Noise While Driving

My car recently made this Weird Metal Grinding Noise While Driving. The noise is very noticable when i'm going above 40mph. It sounds like it's coming from the rear driver side wheel. Could it be that my pads are wearing out? rotor? Note: i've changed my brake pads that was purchased at an Acura dealership and had my rotor resurfaced in the front 2 months ago. The noise is pretty loud above 40mph so i can't tell if it's the front or back but i'm guessing it's the back becasue i had the front replaced 2 months ago. I have my windows up because it's embarassing hearing that awful noise while driving with the windows down. Any suggestions? HELP!!!
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post #2 of 16 (permalink) Old 07-08-2008, 11:51 AM
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Rear pads will degrade twice as fast as the front ones so you might want to get that checked out.

Another things is you might have a seized caliper, your gonna have to get that checked out too.

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post #3 of 16 (permalink) Old 07-08-2008, 12:02 PM
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why does the rear degrade faster? is it due to the smaller pad surface? since the rear brakes do less braking than the fronts.

Thanks for voting guys!
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post #4 of 16 (permalink) Old 07-08-2008, 01:04 PM Thread Starter
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Rear pads will degrade twice as fast as the front ones so you might want to get that checked out.

Another things is you might have a seized caliper, your gonna have to get that checked out too.
I do n't know too much about cars, but you are saying that the pad could be warn out and the metal part is slighty touching the rotor? Correct me if i'm wrong!
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post #5 of 16 (permalink) Old 07-08-2008, 01:32 PM
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I do n't know too much about cars, but you are saying that the pad could be warn out and the metal part is slighty touching the rotor? Correct me if i'm wrong!
Could be or the caliper is seized so that the pad constantly rubs against the rotor.

You won't know till you take the sheel off and inspect.

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post #6 of 16 (permalink) Old 07-08-2008, 01:33 PM
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why does the rear degrade faster? is it due to the smaller pad surface? since the rear brakes do less braking than the fronts.
No clue why..but I assume your right. Everyone has reported this from what i have read and it was same with myself too. I had 60% or so up front while my rear pads were gone..so i got them replaced.

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post #7 of 16 (permalink) Old 07-09-2008, 05:00 PM
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Rear pads will degrade twice as fast as the front ones
Other way around... The fronts usually provide ~70% of total braking power. They get eaten up a lot faster than the rears.
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post #8 of 16 (permalink) Old 07-09-2008, 05:07 PM
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Quote:
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Other way around... The fronts usually provide ~70% of total braking power. They get eaten up a lot faster than the rears.
Yeah thats how mine are..

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post #9 of 16 (permalink) Old 07-09-2008, 05:39 PM
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Other way around... The fronts usually provide ~70% of total braking power. They get eaten up a lot faster than the rears.
Yes that is true..braking is mostly done with front brakes..but on the TSX, I believe the rear brake pads have less lining so they need to be replaced more often then the front.

Just do a search on the rear brakes and you'll see almost everyone will say they had to change thier rear pads before the front pads.

I know I did last year...original owner on the original pads..had to change the rear and front had at at least 60% left.

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Last edited by narci; 07-09-2008 at 05:42 PM.
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post #10 of 16 (permalink) Old 07-09-2008, 05:52 PM
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Not sure if it is the same thing you heard but my 04 model was making a metallic grinding noise in its first year of life. Turns out it was the wheel bearing and it was replaced under warranty and the sound went away. Good luck!
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post #11 of 16 (permalink) Old 07-10-2008, 02:00 PM
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more then likely your brake pad indicator, letting you know your pads need to be replaced. the longer you let it go, the more likely you will need to replace your rotors too.

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post #12 of 16 (permalink) Old 07-10-2008, 04:14 PM
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is this sound while braking or just normal driving?

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post #13 of 16 (permalink) Old 07-23-2008, 03:03 AM
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i think i am having the same problem...how do i tell that it's in need of changing brake pad before i purchase one.... is it noticable visually???
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post #14 of 16 (permalink) Old 07-23-2008, 08:09 PM
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i think i am having the same problem...how do i tell that it's in need of changing brake pad before i purchase one.... is it noticable visually???
Its easier to see when you take off your wheel. There a post in the DIY section that shows how to remove the brake caliper to inspect the pads:

Click this link 2004-08 TSX Service Manual Scans - DIY then go to the brakes section. You should be able to see if the pad is wearing thin.
Good luck!
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post #15 of 16 (permalink) Old 07-23-2008, 10:01 PM
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this has never happened to my TSX, but something eerily similar would happen on my last car, 98 civic ex. it almost sounded like a pebble or rock got lodged between the pad and rotor... but i never saw any damage to the surface of the rotor and had recently had a brake job. it was the most unnerving, metal on metal grinding sound that would come and go. the sound would go away when i applied the brakes too. it was embarrassing when it did happen!

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