I have joined to see if I can find some others with my problem, a F250, 2004, 100K miles and the steering wandering has become a real problem. I have replaced the steering box and had the front end inspected and nothing seems to be a real issue. But for the last 10K+ miles it has developed a wandering of several inches in the steering to keep in the traffic lane. Any suggestions, and I apologize if this has been covered many times before.

 

These had a real bad habit of wearing out drag/center links and ball joints. All the base suspension must be tight, and don't forget to check the stabilizer (if equipped).