1994 XJ shake/vibration @ highway speed

Is it likely that the front drive shaft u-joints are bad again after about 3 months of highway driving? Like I said, I replaced them not too long ago.

Rob

Sounds like the front hub u-joints again !

Tom T

Isnt there a ball thingy in the front axle joints assembly cardan that drys out? Mine did years ago but I only heard the chirps at low speed. KH

Sure, they can fail if the grease didn't get distributed and they can fail if the straps are stretched. The straps stretch easy from vibration and are only a couple bucks to replace.

Mike

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Yes, there is a "ball thingy" (I don't know what it's really called) in my front drive shaft and it was completely dried out and extremely worn when I had the shaft out a couple months ago. I'll be taking the shaft out tonight and check that and the u-joints again and see if I can't get this figured out. Thanks for the help.

Rob

It could also be a bad track bar. This is a bar in the front suspension that runs across the front of the vehicle and connects the axle to the chassis. If the ball joints on the ends get worn the Cherokee can shake at highway speed.

I had considered the fact that it might be a bad track bar (and my jeep does need an alignment) but I went ahead and pulled the front drive shaft and the shaking stopped. The centering ball in the cardan joint was completely shot, so I need to get the driveshaft redone. I would do it myself but the post on the shaft that goes into the centering ball is pretty worn so I think my only option at this point is to get a new front drive shaft.

Rob