|
|
05-21-2018, 10:26 AM | #1 |
First Lieutenant
90
Rep 363
Posts |
Interesting Brake sound - diagnosis
Hey Guys,
I'm having a really odd and hard to pinpoint sound come from my front passenger side brake. Under the last bit of braking from 5mph-mph sometimes I will notice a clamping sort of sound, almost like tightening a spring under tension. Is there some sort of spring in the caliper that can go bad? It can't be pads because it does it with the PFC 08 and OEM pads. EDIT: Just bounced this problem off of a buddy, he said it could the the Retaining clip? May try switching the sides of the retaining clip to see if it moves to the left. Thanks, Last edited by MPower7; 05-21-2018 at 11:08 AM.. |
06-10-2018, 12:55 AM | #3 |
Lord Scrip
1812
Rep 3,012
Posts
Drives: 2011 M3 Coupe
Join Date: Jan 2012
Location: LA,Ca
|
Could it just be a bad wheel bearing or loose caliper? I've seen failed wheel bearings be noisy at slower revolutions or speeds and be quiet at higher revolutions or speeds. Another idea would be to check the caliper mounting bolts for proper torque. If the noise doesn't happen on a non brake application at the same speeds then it's not a wheel bearing (like coasting to a stop from 5 to 0). Or pads are low/compromised.
__________________
|
Appreciate
0
|
06-11-2018, 11:09 AM | #4 | |
First Lieutenant
90
Rep 363
Posts |
Quote:
The noise happens only under braking so that may rule out wheel bearing. I'm leaning toward's something in the suspension at this point as the sound is now intermittent and seems to be random. I did have the alignment shop pull my pins and max out the camber. Wonder if something came loose after that job, or is putting more pressure on a bushing or something. I'm only at -1.6 and -1.7. |
|
Appreciate
0
|
06-18-2018, 01:04 PM | #5 |
Second Lieutenant
178
Rep 267
Posts |
Did you apply anything to the back of the pads, where they come in contact with the pistons (ie Disc Brake Quiet)? Not doing so usually results in groaning/squeaking brakes (so not the sound you are describing), but you should also apply it to the sides of the pad backing plate where they may contact the caliper. That *might* cause a clamping or metal-on-metal type sound.
|
Appreciate
0
|
06-18-2018, 01:18 PM | #6 | |
First Lieutenant
90
Rep 363
Posts |
Quote:
When I am rolling in neutral backwards about 3 mpg and I apply the brakes I hear a loud CLUNK coming the the front right side suspension. Could this be the front control arm bushings? I am debating the rogue street bushing vs the monoball as I daily on the bumpy San Francisco roads. Are there any other suspension items that could be the culprit? Hard to tell with out getting under there i'm sure. |
|
Appreciate
0
|
06-18-2018, 02:00 PM | #7 |
Enlisted Member
6
Rep 34
Posts |
There's a thin metal protector or something behind the break disk. I don't know what its name or whats that for... This happens to me sometimes and I assume some little rocks somehow goes in between and makes that cow bell kinda sound?
|
Appreciate
0
|
06-18-2018, 02:02 PM | #8 |
First Lieutenant
90
Rep 363
Posts |
That has happened a few times in the rear. But this is for sure a suspension problem. I am hoping it is just Control Arm Bushings and can be a quick fix.
|
Appreciate
0
|
06-18-2018, 03:00 PM | #9 | |
Enlisted Member
6
Rep 34
Posts |
Quote:
|
|
Appreciate
0
|
06-20-2018, 02:08 PM | #10 |
Second Lieutenant
178
Rep 267
Posts |
Have you gotten your head under there? I had a similar sound a while back, turned out that the bolt holding my sway bar to the end link came loose a couple weeks after install causing the two pieces to rattle around together, but I could only hear it at low speeds.
|
Appreciate
0
|
06-21-2018, 02:16 PM | #11 | |
First Lieutenant
90
Rep 363
Posts |
Quote:
|
|
Appreciate
0
|
06-26-2018, 06:51 AM | #12 |
Dom
1075
Rep 1,707
Posts |
I'm having the same exact sound coming from the front. I have pulled pins, SPL Front Spherical Arms and AP Essex Brakes. My first step was to order the anti-rattle clips for my pads. If that doesn't work. I'll look through each piece to ensure nothing came loose.
I torqued everything to spec when I installed but i'm not sure the shop I brought it to did the same when they made adjustments. Keep us posted as to what you find out. |
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|