Hey i own a 2000 F150 and had the same problem i took it to the dealer and they had to change upper and lower ball joints on the drivers side of the truck........ mine was under warrenty yours may not be...... u said you greased every fitting under your truck ?? Hows this possible ?? my truck doesnt have 1 fitting !! you must have aftermarket parts or sumthin.... i've been over mine a couple of times now thinkin i may have missed um but there just isnt any i've been offroadin and wanted to grease them.

Well just givin some info later


2000 F150 Extended Cab 4x4 Sport all Black