Steering gear box if the steering box is loose would that cause van to wobble in excess of speeds 65 mph it does not do it all the time some times wobbling bseems to stop

SOURCE: Car wobbles

yes make sure your lug nuts are all tight and the wheels are seated properly on the hubs, if they are tight bring the car to a tire shop and have them balance the two front tires, this will tell you if you have a bent wheel please rate -jeff

SOURCE: death wobble

when they did the alignment did they notice anything broke or missing? most shops will not do alignment unless everything looks brand new. these vehicles along with the cherokee and grand cherokee are notorous for the sway bar end links breaking up towards the top of the link. check that and grad both driveshaft and push up and down and pull side to side on them if there is movement then change the u-joints. when alignment was done did they do 2 or 4 wheel alignment? rear mount could be broke also, depends on what set-up you have and how hard the person before you was on the jeep. they are alot more things this could be also? are the tires wearing different? check all 4 for signs, inside worn more then outside, cupping, feathering etc. just lay your hand flat and run it across the tire should go pretty smooth. this could also be a steering problem, you emntioned that it does not do it all the time? start checking these things if you haven't already and let me know i would love to help im a jeep fan also i own two of them. good luck and let me know

SOURCE: death wobble in front end of 3500 4 wheel drive

check your tie rods and do you have a lift kit on that ? also you may have a belt that has shifted on one of the tires

SOURCE: steering wheel wobbles while driving

its most likely the tires out of balance. With car problems its always best to try the most common and cheapest solutions first and that would be having it rebalanced.

SOURCE: Wobbly steering column on 1989 Chevy Silverado 2WD

It is rather complex but it can be done at home. It will also require special tools. The haynes manuals do cover this repair I believe.