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Unread 02-24-2006, 10:10 AM   #1
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MORE vibration over 40mph

Okay, to start off, I'm no mechanic, but I try, so bear with me....

I have a '97 cherokee, 4WD, manual, about 90K miles...

I'm having the much talked about front vibration problems, starts at about 40mph and gets worse the faster you go. It felt exactly like a tire that was badly out of balance, so I put my other set of wheels and tires on, no change at all.

I just replaced the front U-joints this past summer. I checked them anyays, feel okay.

I though it was bearings, so I jacked up the front end and tried shaking the wheels, no unusual movement, at least not that I could tell.

I read about the front drive shaft, going to the front differential, so I tried shaking that, it doesn't move up and down or end to end. It can rotate slightly, but I think that is normal.

I tried the "putting it in neutral at highway speed and turning it off" method, it still does the same thing.

SO, any thoughts? Might it be bearings, even though there is no excessive movement? Any other clues? Any help would be appreciated, I don't want to walk into a repair shop blind. Thanks!

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Unread 02-24-2006, 10:15 AM   #2
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Welcome to Death Wobble (DW).

First thing I would do is get an alignment. They at that time will be able to tell you if anything else is wrong with the front end. Also make sure everything is tight upfront.
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Unread 02-24-2006, 02:06 PM   #3
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Shouldn't write MORE when you mean More because I thought you meant Mountain Off-Road Enterprises.
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Unread 02-24-2006, 02:16 PM   #4
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Is it stock height or lifted? If lifted I have a 1" TC drop kit from Rusty's I didn't need. I started to round out the holes a bit but never installed it. Cost $20 + shipping from Rusty's I'll do $15 shipped. You'll need 1 more bolt for it though, one got stripped from the kit. I think it's about $2. Just something to think about if you have a lift.
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Unread 02-24-2006, 02:33 PM   #5
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I 2nd getting an alignment. Ive been told you can also pull the front driveshaft off, it can be out of balance even though it might not look like it... But if you pull it and the vibes go away then theres your issue. I would start out with an alignment first though.
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Unread 02-24-2006, 02:37 PM   #6
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My death wobble started around 45 mph. Went away after an alignment.
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Unread 02-24-2006, 02:48 PM   #7
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I also got mine aligned and it was fixed...
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Unread 02-24-2006, 03:13 PM   #8
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wait...i thought death wobble was when you hit a bump and it would cause your front end to shake left and right uncontrollably.

it sounds like you have a driveline vibration of some sorts.

i'd try removing the front driveshaft and see if it still does it. if it does, you can rule that out.

then recheck everything like your tires, ujoints, and hubs again.

it could be anything from a tire weight getting thrown off, the tire itself getting out of round, same for the wheel, bad alignment, etc.

you need to check each one.
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Unread 02-24-2006, 03:19 PM   #9
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i'd suggest a bent rim or a tire missing a weight.
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Unread 02-27-2006, 08:56 AM   #10
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Thanks, I'll have to try pulling the front drive shaft, and get an alignment, I'm almost positive it's never had an alignment.

To reply to other posts, it is all stock, except for shocks, and slightly larger tires.

It's not tires or wheels, I have two sets of tires and wheels, and they both feel the exact same.
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