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master cylinder booster thumping?

Discussion in '4th Gen 4Runners (2003-2009)' started by Tuttking, Aug 26, 2018.

  1. Aug 26, 2018 at 1:14 PM
    #1
    Tuttking

    Tuttking [OP] New Member

    Joined:
    Aug 24, 2018
    Member:
    #6874
    Messages:
    2
    Gender:
    Male
    Vehicle:
    2003 t4r sr5 v8
    my booster is thumping like a heart beat, is this normall
     
  2. Sep 14, 2018 at 10:57 AM
    #2
    fmarkn

    fmarkn New Member

    Joined:
    Sep 14, 2018
    Member:
    #7124
    Messages:
    2
    Gender:
    Male
    First Name:
    Mark
    Vehicle:
    05 Sport Edition 4.7
    Ceramic Brake Pads, 275-60-17 BFGoodrich, Light Bar
    If this is under HARD BRAKING, it may be only the ABS working..... if not,,, Ouch.
     

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