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brake problem

  • 31-03-2012 8:29pm
    #1
    dvae
    Registered Users, Registered Users 2 Posts: 335 ✭✭


    sometimes when coming to a full stop I'm feeling a slight shudder in the brake pedal. after i stop there is a humming or spinning noise that lasts for about 3-4 seconds. the brake pads are good, and the disks look ok.
    any ideas, thanks..

    01 Nissan primera 1.6 petrol


Comments

  • #2
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    Sounds like the ABS engaging. Is it completely random or does it happen when braking quicker or in the wet?

    What's the condition of your tyres?


  • #3
    spiggotpaddy
    Registered Users, Registered Users 2 Posts: 873 ✭✭✭spiggotpaddy


    It could be either your ABS pump working its magic, or you left an old can of dutch gold rolling around in the boot.


  • #4
    spiggotpaddy
    Registered Users, Registered Users 2 Posts: 873 ✭✭✭spiggotpaddy


    jeez ND your quick. There was no reply, I write one quick line and you've already answered.


  • #5
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    spiggotpaddy wrote: »
    jeez ND your quick. There was no reply, I write one quick line and you've already answered.


    sneakysneaky.jpg

    :D


  • #6
    dvae
    Registered Users, Registered Users 2 Posts: 335 ✭✭dvae


    Nissan doctor wrote: »
    Sounds like the ABS engaging. Is it completely random or does it happen when braking quicker or in the wet?

    What's the condition of your tyres?


    its completely random. it can happen while braking hard or driving at 5 mph in traffic.
    i suppose the shudder could be the abs, but what about the spinning/humming noise when I'm fully stopped?

    p.s. tyres are good and it happens a couple times a day, wet or dry.


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  • #7
    Esel
    Registered Users, Registered Users 2 Posts: 23,072 ✭✭✭✭Esel
    Not Your Ornery Onager


    Amateur guess - brake servo?

    Not your ornery onager



  • #8
    d o'c
    Registered Users, Registered Users 2 Posts: 129 ✭✭d o'c


    get the hub sensors, and reluctor rings checked. The abs is picking up a locked up (skidding) wheel, so the noise you here is the pump modulating the force to the brake calipers to stop the wheel locking up and causing a skid.
    the reluctor rings have a regular stepped patern to the teeth, when the wheels are turning this give the abs unit a regular pulsed input via the hub sensor.
    So broken teeth could cause an irregular input ( a gap), the abs unit sees this as a locked up wheel, and does it's business. Dirty or out of position sensor could do it either.


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