Jeep shake

[olds-cool]

Can you tell if the shaking is coming from the front or the back? Maybe try rotating the tires and see if it feels any different. Might help narrow it down. Mine has a shake due to poorly balanced tires. Mechanic told me he had to use 41oz of weight to get one of them to run right and it's still off. He moved them to the back and now I feel the washing machine effect you're talking about.

[msmoorenburg]

Make sure you don't have a separating tire

[denverd1]

id check ujoints. mine did this really bad when i got it and it was the axle u joints up front.

[xj4life2]

first of all did it do this with stock tires? I would do a process of elimination, Put the stock tires back on and check it, Then remove the front drive line and check, then the rear. If after all this then I would check all bushings front and rear. I would also check the drivelines to be sure there in Phase. Good Luck !!