First bump in the road

Mudd Digga · May 21, 2009

Well I just got my first XJ yesterday and now I have a couple of issues that I'm sure there may be many answers.:banghead: When I first take off I hear a rattle or bumping noise in the rear of the truck and would like to hear any thoughts. Also when I run between 50 and 55 then let off the gas it seems to shimmy fairly hard but it doesn't do that everytime. I know this is going to be a work in progress getting this where I would like it to be but any advice would be appreciated. I just realized this may be in the wrong forum..sorry I'm new to this place. I have no idea how to move it or if I can.

rredalty · May 21, 2009

rear u-joints

Mudd Digga · May 21, 2009

Is that a hard fix??

rredalty · May 21, 2009

one way to figure out isn't there.

MELKORsXJ · May 21, 2009

mine shimmys from 50-55

found out what DW is like on the interstate at 65 today!
...not cool

BBgun · May 21, 2009

Mudd Digga said:
Is that a hard fix??

Haynes or Chilton is a good instructional repair guide. Takes some sockets, ratchet, maybe a vice or press, pliers, and a new u joint. If your tool box consist of a phillips and pliers in the kitchen junk drawer its a bit of a task.

Mudd Digga · May 21, 2009

Thank you for your replies. I will see what I can do.

BBgun · May 21, 2009

Check this out. Its not the same u join but same principle. Might want to inspect it and make sure that is what it is.
http://www.4x4wire.com/tech/axle/ujoint/

Jess · May 21, 2009

I would also check the exhaust. You may have a hanger lose or a hole somewhere.

High2by · May 21, 2009

Jess said:
I would also check the exhaust. You may have a hanger lose or a hole somewhere.

X2 on the exhaust. Mine rattles on the unibody above the rear axle, well it did till the BFH did a little clearancing.

Ghost · May 21, 2009

Do not hesitate to come visit me. The bump in the rear could be a loose shock mount or broken shock bolt too. To check the U-joints lay under the jeep, make sure it is off and in park, and try to wiggle the rear DS up and down and side to side. If it moves at all it has something wrong. Check for loose strap bolts on the axle yoke where the DS mounts too. The shimmy when you let off the gas could be a rear axle pinion bearing too. If you need some help you and Dave come by the shop and we wil figure it out. Oh yea, generally speaking this stuff goes in OEM tech. I'll move it now.

joe_peters · May 21, 2009

Don't forget to check your transmission and engine mounts.

FlexdXJ · May 21, 2009

Ghost said:
Do not hesitate to come visit me. The bump in the rear could be a loose shock mount or broken shock bolt too. To check the U-joints lay under the jeep, make sure it is off and in park, and try to wiggle the rear DS up and down and side to side. If it moves at all it has something wrong. Check for loose strap bolts on the axle yoke where the DS mounts too. The shimmy when you let off the gas could be a rear axle pinion bearing too. If you need some help you and Dave come by the shop and we wil figure it out. Oh yea, generally speaking this stuff goes in OEM tech. I'll move it now.

Yeah it may be a shock mount mine sounds like i have Neil Peart(sp?) from Rush under there on gravel roads!

First bump in the road

Mudd Digga

NAXJA Forum User

rredalty

NAXJA Forum User

Mudd Digga

NAXJA Forum User

rredalty

NAXJA Forum User

MELKORsXJ

NAXJA Forum User

BBgun

NAXJA Forum User

Mudd Digga

NAXJA Forum User

BBgun

NAXJA Forum User

Jess

NAXJA Forum User

High2by

NAXJA Forum User

Ghost

Member Number 257

joe_peters

NAXJA Forum User

FlexdXJ

NAXJA Forum User

Similar threads