replaced rotors, brake lines and pads. Now grinding noise.....
06-07-07, 09:37 PM
#1
replaced rotors, brake lines and pads. Now grinding noise.....
My friend and I replaced my pads, rotors and brake lines today. We replaced with cross-drilled rotors, goodridge ss lines and PBS brake pads. We bled brakes and all seemed to be fine except for a SCRAPING/GRINDING noise from the driver rear wheel. It sounds like a METAL SCRAPING ON ANOTHER METAL.
I took it for test-drives to detect the culprit behind this unwanted noise and realised it only happens when i am turning to the right.
For instance, if i go in circles steering towards the left side, all is calm, but if i go in circles steering towards the right, the grinding/scraping noise is there.
it is loud and noticeable when turning. it does not happen when driving straight. Only when turning right. we took the wheel off to inspect bolts rotors etc and all seemed fine but noise was still there. Anyone had any experience with this?
Any advice is appreciated.
thanks
olddog
I took it for test-drives to detect the culprit behind this unwanted noise and realised it only happens when i am turning to the right.
For instance, if i go in circles steering towards the left side, all is calm, but if i go in circles steering towards the right, the grinding/scraping noise is there.
it is loud and noticeable when turning. it does not happen when driving straight. Only when turning right. we took the wheel off to inspect bolts rotors etc and all seemed fine but noise was still there. Anyone had any experience with this?
Any advice is appreciated.
thanks
olddog
06-08-07, 04:03 AM
#3
Lexus Test Driver
I had the same issue when I replaced the OEM rotors.
Take a look at the backing plate behind the rotor. It is black in color and has a very small lip.
Flip your rotor around and look at the rotor hat. You should see a mark ground into the back of the rotor hat.
This is your grinding noise. To remedy it, you can remove that little backing plate or take a grinder and remove a few MM of the edge on the front of the lip on the backing plate.
I had to this this on both rear backing plates. No problems since.
Take a look at the backing plate behind the rotor. It is black in color and has a very small lip.
Flip your rotor around and look at the rotor hat. You should see a mark ground into the back of the rotor hat.
This is your grinding noise. To remedy it, you can remove that little backing plate or take a grinder and remove a few MM of the edge on the front of the lip on the backing plate.
I had to this this on both rear backing plates. No problems since.
06-08-07, 05:28 AM
#4
hey
I had the same issue when I replaced the OEM rotors.
Take a look at the backing plate behind the rotor. It is black in color and has a very small lip.
Flip your rotor around and look at the rotor hat. You should see a mark ground into the back of the rotor hat.
This is your grinding noise. To remedy it, you can remove that little backing plate or take a grinder and remove a few MM of the edge on the front of the lip on the backing plate.
I had to this this on both rear backing plates. No problems since.
Take a look at the backing plate behind the rotor. It is black in color and has a very small lip.
Flip your rotor around and look at the rotor hat. You should see a mark ground into the back of the rotor hat.
This is your grinding noise. To remedy it, you can remove that little backing plate or take a grinder and remove a few MM of the edge on the front of the lip on the backing plate.
I had to this this on both rear backing plates. No problems since.
thanks
olddog
06-08-07, 06:01 AM
#5
Lexus Test Driver
Nope. It's actually right in front of the dust shield. It looks like a pie tin.
If you look at the drivers side rear hub, look at the e-brake. The "pie tin" backing plate is right behind the e-brake.
-Fernando
If you look at the drivers side rear hub, look at the e-brake. The "pie tin" backing plate is right behind the e-brake.
-Fernando
06-11-07, 09:42 AM
#6
I had the same issue when I replaced the OEM rotors.
Take a look at the backing plate behind the rotor. It is black in color and has a very small lip.
Flip your rotor around and look at the rotor hat. You should see a mark ground into the back of the rotor hat.
This is your grinding noise. To remedy it, you can remove that little backing plate or take a grinder and remove a few MM of the edge on the front of the lip on the backing plate.
I had to this this on both rear backing plates. No problems since.
Take a look at the backing plate behind the rotor. It is black in color and has a very small lip.
Flip your rotor around and look at the rotor hat. You should see a mark ground into the back of the rotor hat.
This is your grinding noise. To remedy it, you can remove that little backing plate or take a grinder and remove a few MM of the edge on the front of the lip on the backing plate.
I had to this this on both rear backing plates. No problems since.
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06-11-07, 04:57 PM
#10
Olddog - did you re-use your existing shims from your old pads or did your new ones come with them? If you re-used your old shims I suggest a shim kit. My brakes still to this day make the same noise as you describe ( I re-used my shims from my old pads when I changed them about 2 yrs ago). I didn't change my brakes as of yet so I will fix the problem at the same time of the brake job. From what I understand MOST squeeking, squeeling, screetching and clunking all come from where the caliper pistons come into contact with the shims on the back of the pads...this is the key area to address.
06-11-07, 06:38 PM
#11
Lexus Fanatic
I had the same issue when I replaced the OEM rotors.
Take a look at the backing plate behind the rotor. It is black in color and has a very small lip.
Flip your rotor around and look at the rotor hat. You should see a mark ground into the back of the rotor hat.
This is your grinding noise. To remedy it, you can remove that little backing plate or take a grinder and remove a few MM of the edge on the front of the lip on the backing plate.
I had to this this on both rear backing plates. No problems since.
Take a look at the backing plate behind the rotor. It is black in color and has a very small lip.
Flip your rotor around and look at the rotor hat. You should see a mark ground into the back of the rotor hat.
This is your grinding noise. To remedy it, you can remove that little backing plate or take a grinder and remove a few MM of the edge on the front of the lip on the backing plate.
I had to this this on both rear backing plates. No problems since.
06-12-07, 05:03 AM
#12
Lexus Test Driver
06-12-07, 08:32 AM
#14
the noise has been gone for a few days.
i have to admit, i thought my brakes were totally gone. (believe me they were soft and i thought thats how they were built). i never fully believed in the ss brake lines everytime i read about about them and am not totally sure if it deserves all the glory but upon installation of the goodridge ss lines, new scross-drilled rotors and pads,followed by some bleeding, my brakes are very much better.
not just a hard feel like most say but ,totally crisp, better stopping. nice feel.
i have to admit, i thought my brakes were totally gone. (believe me they were soft and i thought thats how they were built). i never fully believed in the ss brake lines everytime i read about about them and am not totally sure if it deserves all the glory but upon installation of the goodridge ss lines, new scross-drilled rotors and pads,followed by some bleeding, my brakes are very much better.
not just a hard feel like most say but ,totally crisp, better stopping. nice feel.