at about 30 mph and above my steering wheel shakes back and forth really badly, it doesnt do it at lower speeds , its got all new bearings ball joints and tie rod ends in the front end, i jacked it up and couldnt find anything loose or wore, is this a common problem on the older xplorer 400 (its a 96) or should i look for somethins else

 

Check the toe alignment. How old are the tires? Are they severely out od balalnce?

 

they are new tires and i did slime all of them i thought as a prevantive measure but after checking i think i have a loose bearing too and they have less than 25 miles on them, i am thinkin the slime needs to come out of there, and how do you tighten the wheel bearings on this machine

 

I bet the slime has all went to one side of the tires, or is not spread evenly inside the tires causing bad vibes at higher speeds. I had this happen on a pickup I had.