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So, I’ve been having a scraping sound coming from the rear driver side brakes on my Integra. It isn’t so extreme that it is preventing acceleration, but enough to make it loud and annoying at low speeds. I suspected that I just needed new brakes or even a new caliper. I inspected the brakes and saw that they had plenty of padding on them. Then, I took off the caliper to turn the piston in, which I was able to do so with no real struggle. I also inspected the slide pins and they are fine as well. After all of that and the caliper installed, I inspected how it acts when I brake and there was little movement. I even opened the bleeder and wedged a screwdriver in the caliper to manually pry the piston back in with no success. The piston in the caliper will not retract, but I had no issue turning them in manually. This leads me to suspect that it is the e brake adjustment at the wheel. Otherwise, I’m at a loss. Any help is greatly appreciated!!
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You have to figure out where the noise is coming from.
Is the noise only while braking or is it whenever the wheel is turning?If the noise is always present only while braking AND is not just there for the first few stops of the day,
Pull the pads off and see if they have any cracks.
Be sure the pads are just as thick on each end and at the top and the bottom.
There is often a metal brake wear indicator tab on one or both pads.
Sometimes this is bent during shipping or installation and makes contact with the rotor before the pads need to be replaced.
If the pads are ok, make sure every pad has its shim and all the shims fit tightly.
http://www.rockauto.com/en/moreinfo.php?pk=492841&cc=1370641&jsn=353
Apply some anti squeal compound to the backs of the pads underneath the shims and on the shims where they contact the caliper and piston and reinstall them.
Make sure all of the brake hardware is there
The brake pad drag reduction clips
http://www.rockauto.com/en/moreinfo.php?pk=3766254&cc=1370641&jsn=358
and the anti rattle hardware
http://www.rockauto.com/info/31/BA0841257-1__ra_p.jpgIf this does not stop the noise, then replace the brake pads, hardware and rotors if the noise is irritating enough being sure to generously lubricate the caliper slides..
Brake noise for the first few stops of the day is from a light layer of rust that forms when the brakes sit unused for a while.
Totally normal.If the noise is present whenever the wheel turns
Jack the car up and turn the wheel.
First, see if the wheel is difficult to turn by hand.
If it is, you may have a sticking parking brake cable or the mechanism in the caliper may be binding..
If the wheel is hard to turn, disconnect the parking brake cable from the caliper and see if it is now easy to turn the rotor.
If it’s now easy to turn, figure out which cable is binding and replace the cable.
If it’s difficult to turn without the parking brake cable on, then replace the caliper.
If it’s reasonably easy to turn and the noise is present while turning the wheel, then remove the tire and turn the rotor while listening to where the scraping is coming from.
If you still hear it remove the caliper and the pads and see if the noise is still there.
If it is, make sure the backing plate isn’t scraping on the rotor.
If nothing is scraping on the rotor, then you may be hearing a bad wheel bearing.Prying to push the rear brake piston in is the wrong thing to do.
The piston is not supposed to retract that way–it only should be turned in.
The rear calipers have a ratcheting adjusting mechanism which you can break by prying.As for the slide pins, the caliper bolt threads into the caliper slide and the caliper slides on that rather than on a pin.
It scrapes very lightly when moving. At first, I only heard it when I put on the brakes, but when I braked more and more it became a little bit more noticeable when driving. Glazed brakes/rotors maybe?
(update) I just took off the brake pads. The outer pad is totally worn down, but the inner pad is almost untouched. Also, there is an inner grove on the rotor where the outer pad was deliver pressure.
These links tell why the pads wore abnormally.
http://www.acuravigorclub.com/Timely-Topics/Timely1204.htm
To fix the problem yourself, watch Eric’s video on how to replace rear brakes, found here:
https://www.ericthecarguy.com/faq/solving-brake-problems/servicing-rear-disc-brakes
Buy a pair of quality rotors and good quality calipers and pads.
Personally, I like Centric fully loaded calipers because they use brand new parts for most things (pins, clips, etc.).
Rockauto and Amazon, as well as others, stock them.
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