Front Suspension Leaf Spring Problems of Ford E-150

Two issues here. First issue. When making turns there is a clunk sound from the front of the vehicle after the turn as the stering wheel is returned to forward position. Happens intermittant. Cannot feel the clunk in the wheel, but the sound is like metal on metal. Second issue: rear suspensiong clunks and squeeks a lot. (like it is 20+ years old. ) standing on the bumper or pushing sideways on the fender makes the rear-end squeek. I took it to Ford for repair and they stated there was a technote that told them to 'lube' the rear leaf springs. For a few months it made the sound go away, but made the backend feel loose or like it was sliding sideways on corners. At this same visit the engine performance changed noticably. Acceleration was smoother and did not hesitate as much. (they say they did nothing that would cause this change. ) I'm not sure I am getting true answers from the service advisor. Now six months later all the sounds and clunking sounds are back. I feel like it was not designed safe enough for the load rating they gave it or something. I want to make sure it is safe and not going to just end up physically broken somewhere on the road because they want to lube it every six months.

See all problems of the 2011 Ford E-150 🔎.