Question about 2004 Chrysler Pacifica

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Brake peddele pushes back

2004 chrysler pacifica. when i apply the brakes the peddel pushes back. i have change the roters and bled the system and it keeps doing it.

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  • mejkno3 Feb 28, 2009

    i did them 2day

  • mejkno3 Feb 28, 2009

    the check engine light is on but i dont have a scanner

  • mejkno3 Feb 28, 2009

    the ABS thing didnt work. it kept doing it....do you have any more ideas? sombody else told me that it could be the brake booster? wat dou you think?

  • mejkno3 Feb 28, 2009

    it pushes wen i am driving 25+ and comming to a stop. anything under that i wont feel or i just bearly feel it. and the booster im still not sure with that becuse the pedel doesnt get hard...its just the stupid pedel jumping back

  • mejkno3 Feb 28, 2009

    i have check and check all these things.

  • mejkno3 Feb 28, 2009

    thanks alot guys i will try all these thing you guys are telling me about and i will keep you posted tomorrow. if you have any more ideas please keep writing them.

  • mejkno3 Feb 28, 2009

    thanks alot guys i will try all these thing you guys are telling me about and i will keep you posted tomorrow. if you have any more ideas please keep writing them.

  • mejkno3 Feb 28, 2009

    the steering wheel does not shake. It cant be the disc becuase it didit with the old ones. I have check the rear breackes by measuring them with my micrometer and its still good. I will try to clean the hub to see if that might work. Now it does feel like a heart beat.

  • Steve Hinrichs
    Steve Hinrichs May 11, 2010

    This may be an antilock brake problem. Are there any warning lights on.

  • mike loshbough
    mike loshbough May 11, 2010

    how long ago on the rotors

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Some one needed to clean your hubs when they changed the rotors pulsation in front brakes is common on these vehicles.also check for loose tie rods

Posted on Feb 28, 2009

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  • mike loshbough
    mike loshbough Feb 28, 2009

    well its not the abs we know this going pos596 is also right.i do over 12 brake jobs a weak.the rotors are your problem see if they will take them back and by a little better ones

  • mike loshbough
    mike loshbough Feb 28, 2009

    also check the rear brakes because these are disc also

  • mike loshbough
    mike loshbough Feb 28, 2009

    DO YOU FEEL IT IN THE STEERING WHEEL?


  • mike loshbough
    mike loshbough Feb 28, 2009

    do you feel it in the steering wheel?

  • mike loshbough
    mike loshbough Feb 28, 2009

    turn your rear rotors i should have asked you before if the steering wheel was shaking if no it is coming from the rear brake sorry!

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  • 26 Answers

This is the ABS try unpluging the abs module under the hood and see if it stop pulsing if it does you need a ABS

Posted on Feb 28, 2009

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  • James Waters Feb 28, 2009

    does it push back with the vehilce not running ?

    or with it running.

    you could ckeck the booster but if a booster goes bad you don't have vacum assited brakes and makes it very difficult to stop the vehicle but it does make the pedal really hard to press

  • James Waters Feb 28, 2009

    is the pedal pulsing do you feel like the vehilce has a heart beat in the pedal ?

    you said new rotors and brakes

    did you clean and lube the sliders for the calipers

    even though the rotors are new if they were not stored properly they can wrap and being on a vehicle they will spin out of round you may need to have them turned by a brake shop

  • James Waters Feb 28, 2009

    66chrgr is correct when he said the hub

    there is a large hole in the rotor with 4 or 5 small holes around it you should clean with a file or course sand paper the large round one on the vehicle ( hub Assembly)

  • James Waters Feb 28, 2009

    there is a possiblity that the hub bearing is loose uasally and this is why it was not mentioned before is because a hub bearing sqeels loud when driving .Check the big nut in the middle of the hub . But this is a long shot it really has little to do with the brake pedal pulsing like it is

  • James Waters Feb 28, 2009

    you could also take the wheel off on each wheel and set up a runout gauge and spin the rotor to check for runout or take the caliper off tighten 2 lug nuts on to hold the rotor in place and spin it to see if the pads move from side to side if they move the rotors are bad or not seated properly

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