Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

Vibration between 30 - 40 MPH

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Cbrannum, Oct 26, 2020.

Page 1 of 3
  1. Oct 26, 2020 #1
    Cbrannum

    Cbrannum Bobtail Member

    10
    4
    Oct 26, 2020
    0
    I have a 2017 Freightliner Cascadia that had developed a serious vibration starting softly at 30 MPH peaking at 35 MPH and then stopping around 40 MPH. I have checked tires and got them balanced. I am needing help figuring out what the next best thing to look at will be. Thank you.
     
    Cbrannum, Oct 26, 2020
    Cbrannum, Oct 26, 2020
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Oct 26, 2020 #2
    stillwurkin

    stillwurkin Road Train Member

    1,756
    2,855
    Dec 2, 2017
    0
    Check driveline. U-joints etc. Do your engine rpms make a difference? Kinda slow speed for a vibration.
     
    stillwurkin, Oct 26, 2020
    stillwurkin, Oct 26, 2020
    #2
    User666, Cbrannum and LameMule Thank this.
  4. Oct 26, 2020 #3
    LameMule

    LameMule Road Train Member

    1,091
    6,868
    Jan 19, 2020
    Montana
    0
    If it's a manual throw it in neutral when the vibration occurs and let it go to idle. Should help you isolate the issue a bit.
    I just had a similar vibration at 45 to 50 and it was u-joints. Pretty common and fairly easy to confirm by crawling underneath and giving everything a good tug. Check the carrier bearing while you're there.
     
    LameMule, Oct 26, 2020
    LameMule, Oct 26, 2020
    #3
    User666, Cbrannum and stillwurkin Thank this.
  5. Oct 26, 2020 #4
    Cbrannum

    Cbrannum Bobtail Member

    10
    4
    Oct 26, 2020
    0
    it is worse when accelerating and I’m not sure if vibration is the correct word. It more shakes violently.
     
    Cbrannum, Oct 26, 2020
    Cbrannum, Oct 26, 2020
    #4
  7. Oct 26, 2020 #5
    Cattleman84

    Cattleman84 Road Train Member

    9,602
    67,008
    Nov 1, 2017
    The Sticks, Idaho
    0
    Shakes like a bouncing or shakes like the steering wheel skakes/jerks back amd forth?
     
    Cattleman84, Oct 26, 2020
    Cattleman84, Oct 26, 2020
    #5
    Cbrannum and stillwurkin Thank this.
  8. Oct 26, 2020 #6
    LameMule

    LameMule Road Train Member

    1,091
    6,868
    Jan 19, 2020
    Montana
    0
    I've seen a rock between the drives cause a heck of a vibration but that's near impossible to overlook and not likely on a highway truck.
     
    LameMule, Oct 26, 2020
    LameMule, Oct 26, 2020
    #6
    Cbrannum and stillwurkin Thank this.
  9. Oct 26, 2020 #7
    stillwurkin

    stillwurkin Road Train Member

    1,756
    2,855
    Dec 2, 2017
    0
    You sure you don't have a misfiring injector. Happened to me once and it shook the hood etc.
     
    stillwurkin, Oct 26, 2020
    stillwurkin, Oct 26, 2020
    #7
    User666, Cbrannum and LameMule Thank this.
  10. Oct 26, 2020 #8
    stillwurkin

    stillwurkin Road Train Member

    1,756
    2,855
    Dec 2, 2017
    0
    Yeah I popped a tire once with a rock in between.
     
    stillwurkin, Oct 26, 2020
    stillwurkin, Oct 26, 2020
    #8
    Cbrannum and LameMule Thank this.
  11. Oct 26, 2020 #9
    Cbrannum

    Cbrannum Bobtail Member

    10
    4
    Oct 26, 2020
    0
    It kind of feels like I’m sitting On one of those exercise machines that just shake you a lot when you stand on them. But worse.
     
    Cbrannum, Oct 26, 2020
    Cbrannum, Oct 26, 2020
    #9
  12. Oct 26, 2020 #10
    Cbrannum

    Cbrannum Bobtail Member

    10
    4
    Oct 26, 2020
    0
    I haven’t had the injectors checked yet. Never even crossed my mind that one could cause that. Thanks.
     
    Cbrannum, Oct 26, 2020
    Cbrannum, Oct 26, 2020
    #10
    stillwurkin Thanks this.
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

    • Page 1 of 3