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azshtr
11-26-2007, 10:58 AM
My 1990 XJ has a heavy clunk under the passenger side where your feet would be. This doesn't happen on the road, just when on bumps. I can't get it to do it by jumping on the bumper. I replaced the lower control arms with the Rusty's lift kit. I triple checked my work and all is proper / tight. Upper control arms are stock with 200,000 miles on them. Would worn upper control bushings make this heavy clunk sound? I can't think of anything else that would clunk but you guys might. I've spent enough on this project that I don't want to throw money at it needlessly but it's looking like new uppers may be needed. :confused:
AZXJ
11-26-2007, 11:07 AM
How are the upper bushing on the axle ? is the upper shock mount tight ?
Bushings worn on the shock ? Upper control arm bracket loose ? sometimes they break away from the unibody.

A few things to check.


Dave
azshtr
11-26-2007, 11:23 AM
Upper bushings on the axle? I assume you mean the upper control arms... they look old and brittle. New shocks... thats not it. Checked all bolts on uppers... they are tight. No broken brackets.
chopped7
11-26-2007, 11:48 AM
swaybar hitting the spring? I had a bad track bar bushing that made a clunk after I put my lift on but I'm sure you got a new trackbar with your lift. I pieced mine together with used parts.
azshtr
11-26-2007, 12:51 PM
I'll have to look again but I don't think the swaybar comes close to the spring... and yes it is a new adjustable that came with the lift. The clunk doesn't take much suspension travel to happen, just a rough road does it. I was on the four peaks road yesterday and it clunked a lot. When going slow and climbing... barely any clunking.
AZXJ
11-26-2007, 01:10 PM
Motor mounts in good working order ?
azshtr
11-26-2007, 01:52 PM
I can be coasting down a grade and it still clunks. Doesn't have any connection to throttle on or off.
azshtr
11-26-2007, 01:54 PM
Unless an obvious something is mentioned here I'll probably try adjustable uppers. Need them anyway eventually. Care to PM me a price?
jporvaz
11-26-2007, 03:28 PM
exhaust pipe hitting the floorboard?
kemolewis
11-26-2007, 03:45 PM
exhaust pipe hitting the floorboard?

Thats what my clunk was. Well one of them anyway