well its not my front differential actuator i took that black cover off today and engaged 4wd with the front wheels off the ground and the wheels engaged (aka they turned opposite directions). The actuator is workin perfectly i was suprised. But im glad i didnt spend 80 bucks for a new one when this ones not bad.
2001 F150 XLT 4X4
4.6 Triton V8
3.31 gears/new traction loc rear diffferential
4R70W Automatic Transmission
255/70/16 Firestone Destination A/Ts
Borg Warner 4406 Manuel shift Transfer Case
single in duel out flowmaster 40 series