kamuela710

So this just started today but when i take off somtimes not all the time but from a complete stop as i get going to back end shakes and you can hear it shake the jeep. i have a 1989 xj two door, inline 6.... typical stock jeep, she has around 209k, last week i had some dw and i snugged my trac bar witch was and easy fix but now it is this and it is the back end and i have no clue what this could be also when i let off the gas and that push it back down it goes away???

VTJeep

Possibly a bad u joint in the DS, bad wheel bearing, bad springs/bushings... Could be as simple as needing a new balance/rotation. Is it guaranteed rear end vibes, or is it possible it's somewhere else?

cruiser54

Rear trans mount bad or missing bolts?

Time to crawl under the Jeep and start gandering and wiggling.

DFlintstone

Sometimes I think a bad drive-line U-joint vibrates a little like haven a "fish 0n". Not buzzing like an engine, or WOP WOP like wobble or out of balance. (maybe a little "wop", going slow)

You gotta have the drive-line "loose". Withe the rear wheels chucked, in neutral, see if there is any play at all. "zero"is the spec, no play! (when you wiggle and rotate it)