1. #1
    Join Date
    Jul 2021
    Location
    Middle Tennessee
    Posts
    10

    Undulation when throttling up and letting off.......

    Strangest thing I've ever seen.....When you get above 25mph, You throttle up it pulls to the left, But you don't feel a thing through the steering....Let it off and she pulls back right.....
    Same thing, It's a hard pull, But the steering wheel stays straight and you feel nothing through you're hands...The only I can describe it, Just like a snake scooting across the ground.
    Anyone ever seen this? Any info on what to look at/for is appreciated!

  2. #2
    Join Date
    Feb 2009
    Location
    Dayton Ohio Area
    Posts
    6,160

    Undulation when throttling up and letting off.......

    Tire sizes all the same? Wear??
    Tire pressure?
    Stuck brake pad?
    Alignment? Causes high sensitivity to tire issues. Thrust angle.
    Bad wheel beatings. Or other TRE
    Bad axel u joint.
    Bad springs.
    If you are geared low the torque on the rear springs may cause excessive squatting and uneven thrust esp open carrier.
    This may go with the popping noise. Weak springs torque and change pinion angle and bind u-joints



    Never look down on anyone unless you are helping them up - Jesse Jackson
    Last edited by JPNinPA; 08-01-2021 at 11:05 PM.
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

  3. #3
    Join Date
    Jul 2021
    Location
    Middle Tennessee
    Posts
    10

    Re: Undulation when throttling up and letting off.......

    Found out that the spring U hangers were ALL super loose......Tightened them down with a Milwaukee 1/2 drive till the bolts were angled......Drives straight as a pin now, Thanks!!!

  4. #4
    Join Date
    Feb 2009
    Location
    Dayton Ohio Area
    Posts
    6,160

    Undulation when throttling up and letting off.......

    Quote Originally Posted by Eclektq View Post
    Found out that the spring U hangers were ALL super loose......Tightened them down with a Milwaukee 1/2 drive till the bolts were angled......Drives straight as a pin now, Thanks!!!
    Congrats!
    Did that fix the sound issue too?
    Is Your pinion angle good ?


    Never look down on anyone unless you are helping them up - Jesse Jackson
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

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