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Discussion Starter #1
Got a questions for you guys.
This probably isn't "commander" specific but I thought some of you more mechanically experienced members could give me some advice.
The last few weeks I've noticed that when I get up to 50+ MPH my jeep has a bit of "vibrating". Not to bad until I turn my wheel a little to the left or right and I seem to hit a "sweet" spot that really gets the Jeep vibrating.. I can feel it through the steering wheel mainly but it's quite loud and you can feel it through the whole car. I imagine it's something with the steering Colum or front axle? When I hit 70+mph It's unbearable to listen to. I don't think it's drone from my muffler as I've had that on for months with no issue and I don't think that would cause the intense vibrating in the front

Thanks for any reply's and info. Got a long trip from NY to MI soon and would love to have this fixed by then. :)
 

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The vibration is directly related to the speed of the vehicle? That sounds like what you're describing, and that means the most likely culprits are the Suspension, its alignment and/or wheel balance.

Check the tires are properly inflated, especially the same pressure left and right. Inspect the suspension, look for anything wrong. Inspect the tire tread, look for uneven wear, you can find pictures on the internet showing uneven tire wear and explaining what is likely the problem that would cause the uneven pattern you have.

The Commander has pretty big tires, its NOT shocking the balance can change as the tires wear, any tire the balance can change if the tire is NOT wearing evenly. Its NOT unheard of wheel weights falling off the rim either, and the commanders aluminum wheels have a thicker lip and require a different weight, although the standard one for steel rims fits, it just doesn't fit as tight, so a wheel weight coming off is possible.

Finally if nothing jumps out at you doing your own inspection, have it aligned and the tires rebalanced.
 

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I had the 50+ vibes on the Cherokee. Turned out to be a bad
hub assembly. Chock the rear wheels, jack up each front wheel,
and see if there's any play. Not back and forth, but top to bottom,
side to side. The wheels should be tight with zero play.

Something to check, and it's free.
 

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Also, it maybe the u joint on your rear drive shaft, I had to replace mine, it is a $1400 unit (replace the whole drive shaft) but I got a used one off of eBay for $120 and changed myself.
 

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Discussion Starter #6
Thanks for the info guys. I'll have to take it to a more mechanically inclined friend to check these out. It's almost more of a grinding I can feel in the front through the steering wheel. A buddy mentioned it might be the drive shaft. Idk, hopefully it won't blow up before I get it looked at.
 

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Also, it maybe the u joint on your rear drive shaft, I had to replace mine, it is a $1400 unit (replace the whole drive shaft) but I got a used one off of eBay for $120 and changed myself.
The U-Joints are staked into the aluminum driveshaft, its "possible" too remove them and install new ones, but you need to know the right U-Joint to order to do it, as well as the tools/skills to defeat the staking and then re-stake the new ones into the driveshaft.

I've seen several How-To's for other vehicles with the same type of drivershaft, I have NOT seen anyone do this for a Commander yet, perhaps someone has done it for a Grand Cherokee?
... It's almost more of a grinding I can feel in the front through the steering wheel....
I mentioned alignment before, if the toe is off, it "could" cause these symptoms. Its called scrubbing, the edges of the tread grinding down because the wheel is ****-eyed, and it would change as you turn the wheel.

Or it could be CV joints/driveshafts as well.

Inspect your tire wear, if the corners of the tread are ground down, it could be alignment, if the tires are wearing perfectly even, then its likely something else.

CV Joints grinding would be metal on metal kind of grinding, something like grinding more of a rubbing would be scrubbing of the tires because alignment is so bad.
 
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