Front Drivetrain Vibes -
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post #1 of 4 Old 02-03-2013, 12:14 PM Thread Starter
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1993 YJ Wrangler 
Join Date: Jul 2010
Location: Nampa
Posts: 38
Front Drivetrain Vibes

Ive developed some vibrations that feel like driveline vibes when Im in 4wd. Thinkin back I think it probably started when I swapped my RC springs to BDS. I took the front shaft do the local driveline shop and had them rebuild and balance it. That seemed to help quite a bit but there are still some vibrations happenin. Funny thing is, they only happen when I engage the passenger side shaft. (I have a posi-lock) If I run with the xfer case in 4 high and the posi lock in 2wd there are no vibes. If I run with the case in 2wd and the posi lock engaged the vibes are there. I recently had the front axle rebuilt when I had an ARB installed, but the vibes were there before that work was done so I dont suspect an issue induced by the rebuild. Seems to me that in either situation (xfer case in 4 with posi lock disengaged or xfer case in 2 with posi lock engaged) the driveshaft would be spinning. Am I thinkin about that correctly? Any other thoughts as to where these vibes may be coming from?

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post #2 of 4 Old 02-03-2013, 12:24 PM
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1989 YJ Wrangler 
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check your axle u-joints.. especially the passenger side.

1998 ZJ 5.2 Auto

1989 Wrangler Black Bone Stock 2.5l 5spd
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post #3 of 4 Old 02-03-2013, 01:29 PM
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Originally Posted by mark05059 View Post
check your axle u-joints.. Especially the passenger side.

Originally Posted by George Orwell
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post #4 of 4 Old 02-04-2013, 11:25 PM Thread Starter
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1993 YJ Wrangler 
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Heheh... I completely disregarded the axle u-joints but probably shouldnt. The previous owner was supposed to have changed both because I noticed the driver side was bad when I first looked at the jeep. Never did make sure he changed the passenger side, just assumed he had. Thanks for the reply, Ill check it out this week.
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