I found 2 really great resources for changing the power door lock actuator motor
For anyone that has a lazy power door lock actuator motor, don't think you can replace the factory piece with a generic one.
I got a replacement for the front passenger side actuator from Ford Parts and Ford Diesel Parts at Powerstroke Shop (wabash work trucks). Just under $40 bucks. Not cheap but this is direct replacement.
It's a funky unit, looks nothing like traditional door solenoids.
You'll have to remove the door trim. First take off the pillar cover (pulls off). Pull up on front of power window/door lock panel, remove. Remove trim bolt under there. Remove both electrical connectors from the door lock/window switch panel. Remove door light lens with small flat screwdriver, remove hidden trim bolt there.
Pull up on door panel. Pull a few inches away from the door. Remove door light from back of panel (twist and pull). Place door panel out of the way.
Pull back inner door cover. Remove 3 bolts that hold door latch in place (right by the striker hole). Remove door handle actuator rod from upper mount, use large screwdriver to push apart retainer.
Remove 10mm window regulator/rail fastener.
Remove yellow door lock button fastener that holds door lock button rod.
Unplug door lock actuator electrical connector, use small flat blade screwdriver to pry up slightly on retainer while using a larger screwdriver to pry out the plug.
Get your tiny hand into the larger door panel hole and reach back to release the green/black retainer that holds the rod coming from the outer door handle.
Push the clip into the door that holds the cable that comes from the inside door handle to the lock. So you can move the latch around freely.
Push the window regulator/rail towards the outside of the door (away from you) and fiddle the lock mechanism with actuator towards the large hole in the inside door.
Once you can twist the lock mechanism/actuator enough, use a flat screwdriver to pry up the retainer on the inside of the actuator where it slides sideways onto the lock mechanism. Pull it at the same time to remove it.
Install is in reverse with new actuator