Strange problem when pressing brake pedal

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  • dude8383
    Forum Sponsor
    • Jan 2005
    • 10387
    #1

    Strange problem when pressing brake pedal

    I've noticed that every now and then whenever i hit a bump...like a minor bump (during which my foot is on the brake pedal) i get this strange bubbling/scratching noise and the brake pedal kinda vibrates real quick and harden's. i do not loose any braking force however. i just f'in freak out when it does occur.

    im planning on get new discs all around along with axxis ultimate's...and well bleeding the brakes, and filling it up with some ate racing brake fluid.

    what do you guys think the prob is?
    IG: deniso_nsi Leave me feedback here
    Tags: None
    • permit
      No R3VLimiter
      • Mar 2005
      • 3363
      #2
      ABS? It could explain the pulsating of the pedal, but I doubt its activating on small bumps.

        Comment

        • Jordan
          R3V OG
          • Oct 2003
          • 12907
          #3
          ABS problem.
          Tenured Automotive Service Professional - Avid BMW Enthusiast

          Vapor Honing & E30 ABS Pump Refurbishment Service
          https://mtechniqueabs.com/

            Comment

            • dude8383
              Forum Sponsor
              • Jan 2005
              • 10387
              #4
              yeh everyone has been telling me its ABS...i remembered that i had chipped away at the driver side sensor a little when i was replacing my suspension. it was a minor chip..

              you think that could be the source of the problem?

              any pads you'd recommend..
              IG: deniso_nsi Leave me feedback here

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                • AndrewBird
                  The Mad Scientist
                  • Oct 2003
                  • 11892
                  #5
                  How fast are you going over the speed bumps?

                  If you are going fast enough, maybe the front wheels "hop" as they get to the top of the bump, just enough for the brakes to lock for a split second, engaging the ABS.

                    Comment

                    • dude8383
                      Forum Sponsor
                      • Jan 2005
                      • 10387
                      #6
                      Originally posted by NitroRustlerDriver
                      How fast are you going over the speed bumps?

                      If you are going fast enough, maybe the front wheels "hop" as they get to the top of the bump, just enough for the brakes to lock for a split second, engaging the ABS.
                      thats what im thinking...im not goin very fast over these bumps..not speed bumps lol, i creep over those at like .5 mph, just like random bump and potholes in the road that us New Yorkers constantly gotta fuckin deal with.
                      IG: deniso_nsi Leave me feedback here

                        Comment

                        • AndrewBird
                          The Mad Scientist
                          • Oct 2003
                          • 11892
                          #7
                          Originally posted by dude8383
                          thats what im thinking...im not goin very fast over these bumps..not speed bumps lol, i creep over those at like .5 mph, just like random bump and potholes in the road that us New Yorkers constantly gotta fuckin deal with.
                          Oh, my bad. Still applies though. Even more so if they are pot holes and not rasied bumps. The time it would take the tire to fall into the hole would be more then enough time for the ABS to engage.

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