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What could be causing my 2012 Kia Optima to be making a "thumping" sound when I brake?

kiaoptkiaopt Member Posts: 1
edited June 2015 in Kia
It started a while ago and brought it to the dealership and they replaced the front and rear control arms but it still makes the sound. It doesn't happen all the time though.


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    rhinestonefuserhinestonefuse Member Posts: 76
    You need to be much more specific.

    First, is it a thump, clunk or low level cracking sound - this matters.
    Second where exactly is it coming from - front, back or middle.
    C) Did you bring it back to the dealer to tell them they did not remove the noise?
    4. When it does happen...what are you doing? Coming to complete stop at bottom of step hill? Accelerating quickly from 30 to 50? Long, slow right hand turn off ramp etc?

    An inconsistent thump could be many thinka, most likely under the engine/chassis.

    And i assume you've already checked to make sure the stuff in the trunk/under the trunk is all secured...?

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    joejoesonjoejoeson Member Posts: 44
    Possibly it could be the rotors need resurfaced

    "This is most likely caused by your front brake rotors are out of round just slightly and need to be resurfaced or replaced.

    The front brake pads are pulsating in and out because the brake rotor has a small high spot on it causing the brake pads to pulsate. You can probably feel this pulsation in the brake pedal or in the steering wheel as well…usually."

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