Help please me fix my transmission. It doesn't lock in park.

[StrangerRanger]

:rangerred:Can I swap a 1996 Ford Explorer 4.0L V6 tranny with my 1993 4.0L V6 Rangers pooched tranny? Or can I fix my truck from rolling in park?:rangerred:

 

[BrooklynBay]

Welcome to this forum! I've renamed your thread, and moved it into the transmission section. Remove the lower pan, and check the part called the rooster comb. There is another part under it with a roller which locks into place. It's held in with one bolt.