Rattle under acceleration

Discussion in 'Ask An Owner Operator' started by Vipercat, May 28, 2020.

  1. Vipercat

    Vipercat Bobtail Member

    14
    4
    Jul 22, 2019
    0
    Not sure if this is the right place to post.

    98 western star with 3406e cat.

    noticing a kind of “rattle” under the cab, only when accelerating and only noticeable over 40 km per hour.
    U joints all good steady bearing okay, sounds and feels like it’s in the area of the tranny. Letting off throttle makes the “rattle” disappear. But it will always rattle regardless of how much I’m pressing down on the throttle. Any theories?
     
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  3. Vipercat

    Vipercat Bobtail Member

    14
    4
    Jul 22, 2019
    0
    I’ll also add there is no power problems whatsoever. Truck is driving completely normal apart from this sound and slight vibration.
     
  4. Boosted_SC300

    Boosted_SC300 Light Load Member

    66
    57
    Feb 27, 2018
    0
    Just hope it doesn't turn into this. I too started off with a little vibration, checked everything was fine then BAM! No driveshaft or airbag 20200527_192629.jpg
     
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