I have a 2008 f250 superduty 4x4. The steering goes into a speed wobble sometimes after turn a corner. I have replaced the steering box but still have the problem. Has anyone else had this problem?

 

Front end wobble can be caused from bearing issues, tie rods, shocks, tires and brake rotors. Does it happen while turning left, right or both directions?

I would start by jacking the front end up and checking for front end play and or bearing problems.

 

I would guess tie rod ends. Common with those trucks.