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Repeatable Vibration Issues

Discussion in 'LR4' started by Michael Gain, Nov 18, 2020.

  1. DaytonaRS7

    DaytonaRS7 Full Access Member

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    i second this.

    i know you sad you already replaced them...but is there a chance they were damaged during install? or bad to begin with?
     
  2. Michael Gain

    Michael Gain Full Access Member

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    I will check again today. Install was pretty easy so I'm not sure how they could get damaged to be honest. I did buy them off of eBay, but they arrived in the timken box and looked high quality.
    The rotation was tight and smooth too.

    I may just pull both the front bearings and bench test them while I'm at it.

    Haha this truck is beating me down! It seems like I will be replacing the thermostat and ignition switch as well--for unrelated issues.

    On a happy note, my traxide dual battery kit just arrived.


     
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  3. Michael Gain

    Michael Gain Full Access Member

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    Well, I'm an idiot.

    First, I want to apologize to those that wasted brain power helping me diagnose the helicopter noise. I am very thankful of how this forum's familial underpinnings causes us to rally against the plight of those in trouble.

    Second, I wanted to reward you with my stupidity. It was the driver side lug nuts. I must have overloaded the tire when I torqued them to spec. They were quite loose... Hence, the wheel bearing symptoms. Nope, not a wheel bearing...just my carelessness.

    I put the tuffants back on. My original vibration is still there, but the helicopter sound has disappeared. I made sure this time to only allow the wheels to kiss the pavement, to prevent tire rotation, as i dutifully checked, rechecked, and triple checked the proper torquing of the lugnuts.

    I am going to ignore the original vibration for now. The rabbit hole has been frustrating and I'm sure one of the original responses was correct: it's the tires. I will upgrade my terrain beasts for Ko2s on the next go-around.

    Thank you again for all of the responses and patience with my frantic, self-imposed emergency lol.
     
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  4. 1Diana

    1Diana Member

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    I was getting a vibration before I changed the breaks and roters. It went away after. I have read that the go through a lot of roters. Maybe that’s why you don’t get it during acceleration?
     
  5. ktm525

    ktm525 Full Access Member

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    My LR4 is currently mostly driven by my wife and daughter. Sometimes I get horrible shake through the steering wheel upon light braking. I find a series of very hard hot braking applications cures it. Something with pad material or what not. It isn't driven hard enough by the ladies.
     
  6. BeemerNut

    BeemerNut Full Access Member

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    ktm525, you driving on salted roads? Salty brine residue dried on the rotors?
    Metallic pads plus rotor rust haze plus cold morning moisture causing brake shudder until heat built up from braking before back to normal braking action.
    Remove wheels, lock in first gear at idle and carefully sand the rotor surfaces with
    120 grit sandpaper wrapped around a thin piece of wood. I would do the fronts first and test ride results before doing rears unless needed. Wood is especially handy when sanding the inboard and outboard rotor surfaces as your fingers come in handy later not being mangled.
    .....~~=o&o>.....
     
  7. LVDaytripper

    LVDaytripper Active Member

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    Just my 2 cents but in regards to the vibration, what size rim are you using? I had 20's running on HT's on my LR3 and had similar symptoms so when I was having my tires rotated, shop manager showed me both my wheels were out of round possible from hitting potholes that caused the vibration at speeds beyond 30 mph. I switched to my 18's with AT's and vibration gone. Less sidewall on my HTs doesn't protect wheels on streets in LV.
     
  8. BeemerNut

    BeemerNut Full Access Member

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    Out of round egg shaped with flat spot rims or just an orbit or eccentric off the hubcentric mounting lip? Potholes in the desert streets of LV tnhat big? Surprised me along with flash floods hitting the desert......~~=o&o>......
     
  9. LVDaytripper

    LVDaytripper Active Member

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    Combination of potholes, bad road patch jobs and back roads driving, 20's ended up with flat spots which are not visibly noticeable until you put it on a balancing machine or look closely on the inside rim. When we do get rain, desert surface is so dry that it just lets water flow through without absorbing it then end up on roadways since drainage cannot keep up therefore eroding the road surface leading to potholes and bad road patch job.
     
  10. LVDaytripper

    LVDaytripper Active Member

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    Combination of potholes, bad road patch jobs and back roads driving, 20's ended up with flat spots which are not visibly noticeable until you put it on a balancing machine or look closely on the inside rim. When we do get rain, desert surface is so dry that it just lets water flow through without absorbing it then end up on roadways since drainage cannot keep up therefore eroding the road surface leading to potholes and bad road patch job.
     

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