JLU shaking at highway speeds

[22WhiteWalker]

Hey gang, I shifted my 22 High Altitude w/ 6300mi into 4H recently after the snowstorm we had in the Midwest. Since shifting back to 2H, it shakes quite violently at highway speeds (60-80mph). I’ve tried going back into 4H and immediately back to 2H and giving it a second before moving and nothing’s changed. Any advice?

Sponsored

 

[19 JLUR Bright Whit3]

Just a guess, Maybe youre not fully disengaged out of 4H and your front driveshaft is still spinning. You really shouldnt be going over 50 in 4H.

 

[Heimkehr]

At what speed were you traveling when you originally shifted into 4H? The maximum is 45 mph

 

[22WhiteWalker]

At what speed were you traveling when you originally shifted into 4H? The maximum is 45 mph

I was in park when I originally shifted to 4H

 

[wolfdog]

Did you go thru deep snow or slush, got ice or snow still stuck in your wheels, that'll do it!!

I've had Jeeps for years, speeds over 60 in 4 HI never a problem...maybe dangerous or dumb but never a mechanical problem!

Go Jeep!!!

 

[Cyclrder]

I'm betting snow in the wheels! the 4wd system is pretty stout and simple.

 

[Dagwood]

Did you go thru deep snow or slush, got ice or snow still stuck in your wheels, that'll do it!!

I've had Jeeps for years, speeds over 60 in 4 HI never a problem...maybe dangerous or dumb but never a mechanical problem!

Go Jeep!!!

Yep, never done it with snow, but mud will certainly cause this.

 

[NMPirate]

Check and see if you have any kind of ice build-up on the front driveshaft. I had that happen a few times on my old 1976 F250. You get a bad vibration if anything is off balance at all.

 

[The Last Cowboy]

I've used 4 hi at 60-65 with no issues. I always shift in and out on the fly though and never above 50. You only need to stop to put it in 4 low.

 

[Shibadog]

As stated likely ice. IF the issue continues, check to insure you’ve not thrown a wheel weight. If that doesn’t resolve it, ck the tires, you may have thrown a belt in a tire (it WILL shake very hard if this occurs.)

 

[dcmdon]

Did you go thru deep snow or slush, got ice or snow still stuck in your wheels, that'll do it!!

I've had Jeeps for years, speeds over 60 in 4 HI never a problem...maybe dangerous or dumb but never a mechanical problem!

Go Jeep!!!

I'm with you.

My Jeep has SelecTrac (4wd Auto) and I run it at highway speeds all the time. The axle is the same (other than the CVJs). It should not shake.

Snow/Ice/Mud inside a wheel will make things miserable at highway speeds.

Sponsored