2005 FORD F-350 SD Steeringlinkages Problems

FRONT END SHIMMY ON FORD F350 4X4 CREW CAB DULLY, PRODUCTION YEAR 2005. AT ABOUT 40 MPH WHEN THE VEHICLE HITS A BUMP THE FRONT END STARTS TO SHAKE. THE FEED BACK THROUGH THE STEERING WHEEL TRIES TO SHAKE THE STEERING WHEEL OUT OF THE DRIVERS HANDS. THIS VEHICLE HAS HAD THE FRONT STABILIZER SHOCK CHANGED, THE LEFT SIDE DRAG LINK CHANGED AND THE FRONT END RE-ALIGNED. THIS PROBLEM HAS BEEN CONTINUING SINCE THE VEHICLE AS HAD APPROX 40,000 MILES. CURRENTLY THE VEHICLE HAS 90K. I HAVE BEEN TOLD THAT THE SHIMMY IS CAUSED BY THE TIRE PRESSURE, TIRES WORN, FRONT END WEAR, ECT. *TR

I HAVE A 2005 FORD F350 SUPERDUTY AND ON SEVERAL OCCASIONS I HAVE BEEN DRIVING DOWN THE ROAD AND HAVE GONE OVER BLEMISHES IN THE HIGHWAY AND IT HAS CAUSED A VIOLENT SHAKING IN THE FRONT END. IT HAS GOTTEN SO BAD AT POINTS THAT IT ALMOST CAUSED A SEVERE ACCIDENT WHICH MIGHT HAVE INVOLVED MANY. THIS HAS HAPPENED ON MANY OCCASIONS AND I HAVE TO SLOW DOWN AND STOP BEFORE IT SUBSIDES. I HAVE BEEN TO SEVERAL DEALERS AND THEY ALL SAY THAT THEY HAVE A QUICK FIX BUT NOTHING SEEMS TO WORK. EVERYTIME I HAVE TRIED TO FIX THE PROBLEM I HAVE PAID FOR IT OUT OF MY OWN POCKET. I HAVE SPOEKN WITH MANY FOR SUPERDUTY OWNERS THAT HAVE HAD THIS PROBLEM AND THEY ALL SAY THE SAME THING. THIS IS NOT ONLY A PROBLEM FOR THE DRIVER OF THE VEHICLE BUT ALSO FOR OTHERS ON THE...

WE OWN A FORD F350, 2005 MODEL WITH ABOUT 6000 MILES. ON SUN.,3/4, AS MY WIFE DROVE AWAY FROM A SERVICE STATION PUMP, SHE LOST CONTROL OF THE TRUCK, I.E. SHE COULD NOT STEER. LUCKY FOR HER SHE WAS ABLE TO STOP BEFORE ENTERING A HEAVILY TRAVELED HIGHWAY. WE FOUND THAT THE NUT HOLDING THE PIVOT ARM WITH THE STEERING LINKAGE HAD SHEARED OFF ALONG WITH THE COTTER PIN HOLDING THE NUT. THE NUT THREADS WERE STRIPPED OFF. I HAVE THE FAILED NUT ALONG WITH RING/CLIP HOLDING THE COTTER PIN. THE BOLT THREADS ON THE LINKAGE, TO THE EYE APPEAR TO BE O'K. AS STATED THOUGH, THE NUT THREADS WERE STRIPPED OFF. WAS THIS DUE TO A SOFTER METAL BEING USED, OVER TORQUING OR A BAD NUT??' THE TRUCK WAS TOWED TO NEWBERG FORD IN NEWBERG, OR. *JB