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Post by xptb on Jun 16, 2013 16:06:08 GMT -6
Well I was having the same problem as Teach with his jeep vibrating on the highway. I took out my front drive shaft like he did and the vibration went away. How do I go about figuring out if it is the driveshaft or the U-joints that is the problem?
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Post by grizzlyadams on Jun 16, 2013 16:38:24 GMT -6
Best thing to do is jack up the front end, put jack stands under it for safety. Have a friend, wife, girlfriend, pool boy, etc put their hands on whichever tire you want to start at. Have them rotate the tire back and forth if you see slack in the u joint the. Badda-bing-bad da-boom. I would also check the front yoke of the tcase. Could be a bearing there also.
Good luck.
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Post by mike on Jun 16, 2013 16:46:40 GMT -6
Are the u-joints loose? The joint should not move in the caps at all, of they do they they will cause vibrations and are bad and should be replaced
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Post by xptb on Jun 16, 2013 17:11:23 GMT -6
well i shook it all over the place and there was zero movement on the u-joints, just the driveshaft itself wiggled. But I know the front on these are supposed to wiggle some.
I didn't try to jack up the truck and turn the tires though. Would shaking the shit out of it do the same thing? lol
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Post by grizzlyadams on Jun 16, 2013 17:28:49 GMT -6
Rotational movement is where they will show up. If it was on the ground only thing that will show is if your wheel bearings are tight as well as TREs.
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Post by xptb on Jun 16, 2013 19:17:48 GMT -6
gotcha, i'll try that as well
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Post by mike on Jun 16, 2013 19:24:38 GMT -6
of you can't figure it out then bring it by one afternoon.
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Post by xptb on Jun 16, 2013 19:34:48 GMT -6
i still need to bring my tires by to balance! I might call you later this week for that.
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jamison
Junior Member
Posts: 157 
Location: Bartlett
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Post by jamison on Jun 16, 2013 20:46:56 GMT -6
The slip yoke built into a XJ drive shaft will wear out over time. If its a high frequency buzz while at highway speed, your best bet is to go to the JY and get a new drive shaft. That's what I did and it got rid of my vibe completely.
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Post by musclehead on Jun 16, 2013 20:55:12 GMT -6
Well I was having the same problem as Teach with his jeep vibrating on the highway. I took out my front drive shaft like he did and the vibration went away. How do I go about figuring out if it is the driveshaft or the U-joints that is the problem? Are they stock u-joints? If so thats probably your problem. |
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Post by mike on Jun 16, 2013 22:01:53 GMT -6
i still need to bring my tires by to balance! I might call you later this week for that. I have no plans except Wednesday evening and of course Friday is cruise-in night |
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Post by Somebody on Jun 16, 2013 22:56:38 GMT -6
All of the above!  Another thing is the centering joint on the double cardon... they tend to go bad as well.. Ujoints aren;t that expensive so changing all of them isn;t a bad idea if they are the stock ones.. Or go to PAP and grab another one and see if it helps.. cheap there too.. if it doesn;t work then you have a spare!  |
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Post by Off_Road_Teacher on Jun 17, 2013 5:31:40 GMT -6
Try a diff slip yoke, they are $12 at lkq
I also had mine completely rebuilt and balanced by jeff at fleetpride
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Post by grizzlyadams on Jun 17, 2013 6:49:03 GMT -6
Try a diff slip yoke, they are $12 at lkq I also had mine completely rebuilt and balanced by jeff at fleetpride But the DS wasn't the source of your problem. If I remember correctly. |
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Post by xptb on Jun 17, 2013 10:32:36 GMT -6
is the slip yoke the thing in the diff, or the transfer case?
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Just remember...we give them back in 10 months 
It's alive!! 
