Peterbilt 389 Shakes So Bad It Will Take Your Virginity.

Discussion in 'Peterbilt Forum' started by newdriver2, Aug 5, 2019.

  1. newdriver2

    newdriver2 Light Load Member

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    Alright, So if you are here...you are curious. Yeah, I said it. Over the past few months I have developed a shake that has turned into an earth quake...

    I have had multiple mechanics and shops go thru my truck, spent thousands into trying to find the source of this vibration.

    vibration starts @ 48mph and gets really bad at 58 and smooths out after 65 BUT it is still there.

    things that I have had checked: steering checked, front axels checked, king pins checked, rims checked, balanced tires, new rims installed, drive axels checked, pinions checked, u joints checked, pittman arm replaced/checked, transmission mounts checked, engine mounts checked (mounts), cab mounts replaced, shocks checked, vibration is in gear and out of gear, bobtail AND with a trailer, virginity checked, replaced leveling valve, and bank account checked and I still didnt over draft....but I am coming to a dead end here...

    anyone ever had a similar issue? anything that you post can help, yes you. go ahead....post it...
     
    Last edited: Aug 5, 2019
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  3. newdriver2

    newdriver2 Light Load Member

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  4. Snailexpress

    Snailexpress Road Train Member

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    Did you try different trailer or bobtailing?
     
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  5. newdriver2

    newdriver2 Light Load Member

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    buddy in my country, is same.

    Same ####, I've done both my friend.
     
  6. newdriver2

    newdriver2 Light Load Member

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    Only things I have not done, swap tires out completely... I have had people follow me to see if they see tire hop but it was not there...

    and I have checked my carrier bearing but have not replaced it... idk what else it could be. I've had this truck for years and never had an issue...
     
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  7. Snailexpress

    Snailexpress Road Train Member

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    Cheap gopro camera with case from wallyworld, four strong round magnets from home depo, quick steel putty will help to restore your virginity. Attach magnets to the camera case with epoxy putty. Place the camera on the frame facing drives, drive line, carrier bearing. Do the same on the front if rear is OK.
     
  8. crookedTRanspo

    crookedTRanspo Bobtail Member

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    did you try adjusting your seat? sometimes when i ride at the max psi setting for the seat i feel as vulnerable to vibrations as you buddy...
     
  9. crookedTRanspo

    crookedTRanspo Bobtail Member

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    however, on a more honest note. have you checked wheel bearings or hubs? in very rare instances, ive seen them create a wheel hop that transfers almost throughout the cab...
     
    Rounded_nut Thanks this.
  10. Rubber duck kw

    Rubber duck kw Road Train Member

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    I was hoping you were going to say it was brand new, I know they used to have serious issues with drive shafts and such brand new, but I'm guessing you went all through those already.
     
  11. Ridlingdj

    Ridlingdj Medium Load Member

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    Just a stupid idea pull your steers off if coming from the front and roll them see if they are still round I have had belting come loose inside a pickup tire before and felt like the truck was in the middle of a earthquake or coming apart
     
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