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1996 t600 cab vibration

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Highwolf89, Sep 25, 2015.

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  1. Sep 25, 2015 #1
    Highwolf89

    Highwolf89 Light Load Member

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    i am experienceing vibration in the truck from the floor to the gas pedal very irritating make my ankle hurt from vibration . I changed motor mounts with over haul and changed all shocks and majority of air bags is there something I am missing now I did rip up the old floor and put down linulium flooring in the truck but I feel in the gas pedal is there something I can do to eliminate this vibration it feels as if there is a vibrator in the gas pedal and floor ... I drove a 2003 Peterbilt 379 no vibration really made me go crazy ... What can I do ... Please help ...
     
    Highwolf89, Sep 25, 2015
    Highwolf89, Sep 25, 2015
    #1
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  3. Sep 25, 2015 #2
    AModelCat

    AModelCat Road Train Member

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    When does it do it? Under load, at speed, coasting, etc? Sometimes a bad wheel bearing will cause a vibration that you can feel on the floor/throttle pedal.
     
    AModelCat, Sep 25, 2015
    AModelCat, Sep 25, 2015
    #2
  4. Sep 25, 2015 #3
    FuzzFace2

    FuzzFace2 Medium Load Member

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    Cab mounts & cab shocks bad?
    Dave ----
     
    FuzzFace2, Sep 25, 2015
    FuzzFace2, Sep 25, 2015
    #3
  5. Sep 25, 2015 #4
    Inland-Pilot

    Inland-Pilot Light Load Member

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    Bad trailer tires will shake a truck to pieces too. Just a thought.
     
    Inland-Pilot, Sep 25, 2015
    Inland-Pilot, Sep 25, 2015
    #4
  7. Sep 25, 2015 #5
    belowspeedlimit

    belowspeedlimit Medium Load Member

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    Lot lizard kickin and screamin in sleeper will do it too
     
    belowspeedlimit, Sep 25, 2015
    belowspeedlimit, Sep 25, 2015
    #5
    flat top Thanks this.
  8. Sep 25, 2015 #6
    Highwolf89

    Highwolf89 Light Load Member

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    I will check the cab mounts but it seems while driving under speed it vibrates more . I thought it was motor mounts but it wasn't . Will check
     
    Highwolf89, Sep 25, 2015
    Highwolf89, Sep 25, 2015
    #6
  9. Sep 25, 2015 #7
    kwswan

    kwswan Road Train Member

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    Check your universal joints.
     
    kwswan, Sep 25, 2015
    kwswan, Sep 25, 2015
    #7
  10. Sep 25, 2015 #8
    AModelCat

    AModelCat Road Train Member

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    ^ 2nd that.

    How are your tires? Some Chinese/cheap brand tires have a tendancy to become oval rather than round.
     
    AModelCat, Sep 25, 2015
    AModelCat, Sep 25, 2015
    #8
  11. Sep 25, 2015 #9
    Highwolf89

    Highwolf89 Light Load Member

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    Tires brand new but did the same with old tires changed all my u joints besides the u joints on the small shaft between the differentials would that do it ?
     
    Highwolf89, Sep 25, 2015
    Highwolf89, Sep 25, 2015
    #9
  12. Sep 25, 2015 #10
    AModelCat

    AModelCat Road Train Member

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    Pretty much any component that moves while driving could be suspect. U-joint vibrations typically show up at a certain speed but go away when above or below that speed. Out of round tires tend to make more of a "hop" feeling in the seat. Worn/loose wheel bearings tend to give somewhat of a "hum" vibration that I would liken to driving repeatedly on and off a rumble strip.

    Do you see any evidence of a broken off driveshaft balance weight?
     
    AModelCat, Sep 25, 2015
    AModelCat, Sep 25, 2015
    #10
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