Ford Repair Questions? Ask a Mechanic for Answers ASAP
It's pretty likely that you have corrosion that is binding the screw that the motor works on, if the seat is not at it's full travel stop. If it has reached it's full travel stop forward or back, sometimes it will go too far and get stuck there. Either way, you are best off replacing the seat base, because either condition indicates wear that will cause it to happen again.