Results 1 to 15 of 15

Front brake squeal

This is a discussion on Front brake squeal within the General Help forums, part of the LSx Technical Help Section category; Just before I went on deployment, I had to purchase new rotors for my car. I didn't realize it until ...

  1. #1
    Drive it like ya stole it sills1's Avatar
    Join Date
    Nov 2005
    Location
    San Diego, California
    Age
    45
    Posts
    228

    Pewter
    2000 Camaro SS

    Front brake squeal

    Just before I went on deployment, I had to purchase new rotors for my car. I didn't realize it until it was too late to wait for an order to come in. I was forced to by Autozone specials because my wife had to use the car while I was gone. Well, now I'm home for emergency leave for a couple of weeks and I still have this horrible squeal.

    I was wondering if anyone knew of something that might be causing it. I've already greased the area where the pads touch the caliper and also roughed up the rotor a little with sandpaper hoping that would fix it. Well it did for about the first 3 red lights that I came to, but it's back again and I don't know what else to do.
    John
    Come by and check out my 2000 SS
    Click here
    FQuick Site


  2. #2
    Story of My Life!! BIG D's SS's Avatar
    Join Date
    Aug 2005
    Location
    Commerce Ga
    Age
    39
    Posts
    4,995

    Black, Blue
    07 TBSS, 07 GSXR1000

    My crossdrilled and slotted rotors with a few thousand miles squeal.

  3. #3
    Drive it like ya stole it sills1's Avatar
    Join Date
    Nov 2005
    Location
    San Diego, California
    Age
    45
    Posts
    228

    Pewter
    2000 Camaro SS

    I've heard somewhere that you can put a piece of padding, a rubber or paper type of material, in between the caliper and the pads. The noise supposedly comes from the pad moving back and forth across the caliper piston creating the squealing noise. I don't know if that is true or not but it could be. Has anyone else heard of this?

  4. #4
    Senior Member 02z28ls1's Avatar
    Join Date
    Sep 2005
    Location
    near St. Louis
    Posts
    1,205

    navy blue
    2002 Z-28 Camaro M6

    Most of your brake pads on the market today come with "shims" already in place on the back of the pads. This is for noise control. You can take and sand the rotors like you've already done, and rough up the pad surface also. This will give a new surface to both of them and can cure noises. It's quite likely that the rotors weren't cleaned enough when installed-in which case there is a contamination on the pads causing the noise. Scuffing them up can sometimes be enough to cure this,depends on how bad the contamination. Sometimes it's better to replace pads and rotors at the same time so they break in together,on a quality pad there is a special coating on the surface of the pad to coat the rotor with for better break in. You need to cycle new brake pads also,Braking from 30 to 0 w/30 second cool downs in between. Ideally 12 - 15 times when first installed. If broken in right they will last longer and work better and quieter for their lifespan.On new rotors take brake clean and hose them down-then soap and water in the sink until really clean for best results.

  5. #5
    Story of My Life!! BIG D's SS's Avatar
    Join Date
    Aug 2005
    Location
    Commerce Ga
    Age
    39
    Posts
    4,995

    Black, Blue
    07 TBSS, 07 GSXR1000

    Hell all mine was new. I haven't gotten around to cleaning mine an scuffing mine up since I installed them.

  6. #6
    Drive it like ya stole it sills1's Avatar
    Join Date
    Nov 2005
    Location
    San Diego, California
    Age
    45
    Posts
    228

    Pewter
    2000 Camaro SS

    Mine were new also, pads and rotors. I guess I'll have to scuff up the pads while I'm home to see if that cures the problem. Thanks for the info 02z28ls1.

  7. #7
    Impounded YoMommasTA's Avatar
    Join Date
    Jan 2006
    Location
    ne pa
    Posts
    532
    go to any auto store and buy a bottle of brake stop squeal.apply it to back of the pads and no more noise.

  8. #8
    Junior Member dunn9927's Avatar
    Join Date
    Jan 2006
    Location
    Toronto, Ontario
    Age
    35
    Posts
    6

    Black
    2002 Trans Am WS6

    Could it also be possible that the brake pads are semi-metallic?? I also have a squeal when braking at low speeds, and have been told by my dealership that the pads are semi-metallic. As the brakes are used more often and begin to wear the pads are leaving tiny metallic particles on the rotor, thus causing the squeal at low speeds. Anyone else have semi-metallic pads? Should I switch to a ceramic pad, or back to the OEM pads?

    Cheers.

  9. #9
    Drive it like ya stole it sills1's Avatar
    Join Date
    Nov 2005
    Location
    San Diego, California
    Age
    45
    Posts
    228

    Pewter
    2000 Camaro SS

    That sounds like the dealership just doesn't want to stand behind the work they do on brakes. I know for a fact that some cars come from the factory with semi-metallic and they never squeal until it's time to change them. That is why I don't let a dealership touch my car. I can't stand the way they sling information around and expect everyone to believe them just because they are the Manufacturer Liscensed DEALER. Sorry to seem a bit aggrivated, but I've had more than one dealership try to take advantage of people I know just because they had no clue. Not that this is the case with you, just with people I've known.

  10. #10
    Senior Member 02z28ls1's Avatar
    Join Date
    Sep 2005
    Location
    near St. Louis
    Posts
    1,205

    navy blue
    2002 Z-28 Camaro M6

    You can get BS at any shop. Not defending the dealerships here -just a fact.Like I was saying-if you don't break in the pads properly they can have a noise problem that won't go away. He's already put stuff on the back of the pads so buying something to put on the back of the pads isn't going to change anything per se. Take them off,scuff them up,sand on the rotors,If installing new rotors clean and degrease them. Then bed the pads in as described. Ceramic pads can be noise free and dust free,but they don't always work well for every situation. All brakes make noise all the time they are applied,you have to try to tune it into a frequency humans can't hear. In certain temperature and humidity conditions any brake setup can make noise,all you can do is try to minimize the problem. As a side note-IMHO-dealership guys don't know as much about brakes or alignments as the shops that specialize in this stuff. They have their strong points and weak points like any tech does.

  11. #11
    Member keliente's Avatar
    Join Date
    Aug 2005
    Location
    Charlotte, NC
    Age
    31
    Posts
    723
    99 Firebird Formula

    Quote Originally Posted by YoMommasTA
    go to any auto store and buy a bottle of brake stop squeal.apply it to back of the pads and no more noise.
    What he said. Anti-squeal is a lot better than grease.

  12. #12
    Drive it like ya stole it sills1's Avatar
    Join Date
    Nov 2005
    Location
    San Diego, California
    Age
    45
    Posts
    228

    Pewter
    2000 Camaro SS

    I just picked up a can of the stop squeal. I will update the thread with the results after I have completed the tear down and reassembly.

  13. #13
    Story of My Life!! BIG D's SS's Avatar
    Join Date
    Aug 2005
    Location
    Commerce Ga
    Age
    39
    Posts
    4,995

    Black, Blue
    07 TBSS, 07 GSXR1000

    Gonna do mine this weekend also.

  14. #14
    Junior Member
    Join Date
    Feb 2006
    Location
    GARDEN GROVE, CA
    Age
    43
    Posts
    95

    BLACK
    2002, CAMARO Z28

    My front brakes alway squeak to. I installed Powerslots with Hamk hps pads and broke them in according to there directions. They only squeak a low speeds, 20mph and under. I have taken the brakes apart and cleaned everything and used anti squeal on the back of the pads and regreased the caliper pins. The brakes were dead silent for 1 day and then it came back. One day I did some very high speed hard braking and the brakes stopped making noise until the end of the day. After washing the car and cleaning the wheels the squeak goes away for the first few stops.
    2002 Camaro z28, m6, direct flow lid, maft, powerstick muffler with stainless z28 tips, lakewood lca, predator, vacuum gauge inside car, ngk tr55, msd wires
    stock dyno 310 rwhp, 329 trq

  15. #15
    Senior Member 02z28ls1's Avatar
    Join Date
    Sep 2005
    Location
    near St. Louis
    Posts
    1,205

    navy blue
    2002 Z-28 Camaro M6

    Another possibility-if you spray tire cleaner stuff on your tires or cleaner on your wheels it could be contaminating the rotor surface. This can cause a greasy substance on the rotors to ruin the pads with. And if you've never tried Silglide or similar high heat brake lubricant on the back of the pads-give it a shot. I highly recommend it. It is a greasy substance,I was assuming that's what he meant. If you are using the spray paint like stuff on the back of the pads-make sure you let it dry -like a long time-fully dry!! I stress this because I see guys spray it and assemble it and the stuff doesn't work very well then. While you have the pads off,scuff them on some concrete or sandpaper. Sometimes just stopping harder than usual can stop the noise also.
    Last edited by 02z28ls1; 03-03-2006 at 08:45 PM.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •