01 7.3L Steering Jumps Left Then Right, Fixed it!
As the Title Implies this is not to ask for Help but to Post a Solution.
Truck is a 2001 F350 DRW 4x4 CC 7.3L Automatic 201,000 miles.
While Driving Along, Usually Shortly after making a turn, the Truck would Jump to the Right. Correcting Back to the Left to compensate would cause the truck to suddenly jump to the left. Very Frightening to me, I can't imagine what the Drivers Coming at me or Following me thought. After relentless Reading of Forums both Here and Elsewhere I opted for the Power Steering Pump and Steering Box Possible Cause. This did NOT fix the problem. The Next Option was What I dreaded. Front Wheel Bearings. I went and Bought 2 Pairs of Little 2-ton Jack Stands, I put the Truck up on the 4 jack Stands so I could run it in Gear and Try and Diagnose the Problem Better (yeah I should have done this First before the Power steering Pump and Steering gear box I know). I Found Nothing. Started it up put it in Drive then 4x4 and did everything and Still nothing. Got Back under it with Engine Off and Just started Rotating the Wheels and puliing them Sideways a little to see if I could hear or feel anything in the Wheel Bearings. Started with the Drivers Side and found Nothing. I went to the Passenger Side and heard what sounded Like a Dry Seal Rubbing against itself but nothig to cause the Problem. All of the Sudden the Wheel got really hard to turn as I was also Pulling sidways against it to try and find any Play. Then all the Sudden the Wheels Jumped a Good inch or more to one side like someone was in the Cab and turned the wheel quickly. I kept turning the wheel and when it got back around the wheels all the sudden jumped the other direction an inch or 2. Staying in that spot and rotating the Wheel back and forth the wheels will jump back and forth. I had found the Problem. The Problem was NOT the Wheel Bearings but was the U-Joint on the Passenger Side Axle Pivot point. The U-Joint had competely Seized up in one Plane of Movement. Ripped everything apart and Could not even Remove the C-Clips. I had to tourch out all 4 Caps. Put in a New U-Joint and New Wheel bearing Hub assembly and Seals While I had it down that Far and all was Well. Truck is back on the Road and working great. I will do the Other side Shortly probably within the Next couple of weeks but I wanted to Post the Problem for People that Might need the Info.