98XJSport
Destiny is the rising sun
- Location
- Western Maine
I have a 98 XJ 4.0 auto with almost 200K. For the past year or so Ive been hearing an oscillating kinda hum in the front end, sounds drivers side to me. Not anything I could feel, so I never worried much about it. Before I took it off the road for a regear/rebuild it was getting louder, enough for me to be concerned. So I replaced the drivers side unit bearing and u-joint. No change. Took it off the road for a few months, put in new trac bar, new tie rod, gears, locker, carrier, all new bearings, new control arms and RC drop brackets. Checked out everything we took off and reused, no signs of wear. Back on the road now and the hum is still there.
I can't tie it to anything in particular, only it does it more at higher speeds. And it seems to change/go away with dips in the road sometimes. The only thing I have seen to check next is the front drive shaft. No play in any of the joints, but the slip shaft feels much looser than the new front driveshaft I am running in the rear. Not loose as Im turning it, but if I push up and down I can kinda rock it. I have to pull my tcase skid to drop the front shaft I think, hoping to try that this weekend.
Can anyone think of something else I should check or have overlooked while Im under it?
Thanks :cheers:
I can't tie it to anything in particular, only it does it more at higher speeds. And it seems to change/go away with dips in the road sometimes. The only thing I have seen to check next is the front drive shaft. No play in any of the joints, but the slip shaft feels much looser than the new front driveshaft I am running in the rear. Not loose as Im turning it, but if I push up and down I can kinda rock it. I have to pull my tcase skid to drop the front shaft I think, hoping to try that this weekend.
Can anyone think of something else I should check or have overlooked while Im under it?
Thanks :cheers: