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Constant Ringing noise when parking brake is disengaged

Discussion in 'International Forum' started by Rob5244, Jul 2, 2014.

  1. Jul 2, 2014 #1
    Rob5244

    Rob5244 Bobtail Member

    3
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    Jun 26, 2014
    Clio, MI
    0
    I have a 06 9400i Eagle and today I noticed a ringing noise when I have the parking brake disengaged and it's extremely annoying all I hear is the ringing the entire time I'm driving somewhere. I don't think it's a warning noise but I can't figure out what is causing it does anybody have any ideas?
     
    Rob5244, Jul 2, 2014
    Rob5244, Jul 2, 2014
    #1
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  3. Jul 2, 2014 #2
    6wheeler

    6wheeler Road Train Member

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    Aug 30, 2009
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    Air leak. Cut the truck off but leave the trailer brakes on. Then listen for the problem
     
    6wheeler, Jul 2, 2014
    6wheeler, Jul 2, 2014
    #2
    Rob5244 Thanks this.
  4. Jul 2, 2014 #3
    CondoCruiser

    CondoCruiser The Legend

    19,726
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    Apr 18, 2010
    Tennessee
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    Inside the cab it's probably the parking brake valve itself.
     
    CondoCruiser, Jul 2, 2014
    CondoCruiser, Jul 2, 2014
    #3
    Rob5244 Thanks this.
  5. Jul 2, 2014 #4
    Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    If the noise is there with the brakes released and the key is off, I would say it is an air leak noise. If the noise starts with the key on, I would would say it is some kind of buzzer problem.
     
    Heavyd, Jul 2, 2014
    Heavyd, Jul 2, 2014
    #4
    Rob5244 Thanks this.
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