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Unread 02-03-2013, 12:14 PM   #1
bassnmick
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1993 YJ Wrangler 
 
Join Date: Jul 2010
Location: Nampa, Idaho
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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Unread 02-03-2013, 12:24 PM   #2
Mark05059
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1989 YJ Wrangler 
 
Join Date: Mar 2009
Location: quechee Vermont
Posts: 4,266
check your axle u-joints.. especially the passenger side.
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Unread 02-03-2013, 01:29 PM   #3
timatoe
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1990 YJ Wrangler 
 
Join Date: Aug 2006
Location: Grass Valley California
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Quote:
Originally Posted by mark05059 View Post
check your axle u-joints.. Especially the passenger side.
this
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Unread 02-04-2013, 11:25 PM   #4
bassnmick
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1993 YJ Wrangler 
 
Join Date: Jul 2010
Location: Nampa, Idaho
Posts: 38
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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