I have a weird shake...

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by cowboymagic81, Aug 9, 2022.

  1. cowboymagic81

    cowboymagic81 Bobtail Member

    Sep 2, 2018
    2013 KW T-660 Cummins ISX 15 CM2250 9-speed conversion (13speed)
    This has slowly been getting more noticeable, but I have two shakes while driving.
    First one, when I'm loaded, coming to a stop it'll start shaking the whole front end. I have new tires and had all the tires balanced. All brakes and drums are new. It'll shake enough to shake the hood a lot and steering wheel a little. Wth is this?
    Secondly, a (what feels like internal) shake when pulling/getting up to speed, only at 40-45mph. Feels almost drive-line like. 6 month old carrier/hanger and U-joints. Not related with the shake, but I also have a "DA Left Wheel Speed Sensor" diag code showing on the indash, that no one seems to be able to make go away/fix.
    When I take it to the shop to be looked into, I get the whole, "We have no way to duplicate the weight for that reaction, but everything looks to be safe and in good shape."
    Any idea of what these two shakes may be? It's driving me crazy!
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  3. ProfessionalNoticer

    ProfessionalNoticer Road Train Member

    Apr 25, 2021
    Check your leveling valve and make sure the front tires are mounted properly. Jack up the front axle and spin each wheel. Look closely. Make sure nothing is wobbling side to side nor up and down on the tread. Also pay close attention to the little raised line in the tired sidewall near the rim. Make sure it's the same distance from the rim all the way around as you slowly spin it by hand.
  4. Six9GS

    Six9GS Road Train Member

    Dec 3, 2012
    Yuma, AZ
    And I thought you were gonna show us a new dance move. Must be watching too much Tik Tok!
  5. Rideandrepair

    Rideandrepair Road Train Member

    Aug 8, 2015
    Abs Sensor may just need to be pushed in, against the tone ring hub on axle. Follow the wire, look inside the drum, might be able to use a long extension or a wooden dowel rod to push it in, without taking the wheel/drum off. If it works and goes off, then comes on again, I would check the axle, make sure the wheel bearings not loose. Otherwise chances are the wires bad. Start at the sensor on the hub, Sometimes the sensor has a short wire, and an extension wire from it to the ecu. Change that wire. If the sensor just has 1 long wire, it’ll need to be changed. Hard to do without taking the wheel and drum off. The sensors themselves don’t really go bad. Always a wire.
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