Two problems related to catalytic convertor have been reported for the 2003 Ford F-250. The most recently reported issues are listed below.
Vibration when under acceleration from stop, Ford has replaced catayltic converter 3 times. Problem still exists. Savere air leak drivers window, I was told it was an enginering defect and nothing could be done. Rough idle and skipping , I was told "I was buying cheep gas" chenged brand still same problem.
Mechanical problems/ poor assy of vehicle.