Other than a FSM, try aldata.com Their consumer section for vehicle owners has a FSM on line for a small fee. Great site.
Or for just the 4.0L engine. Pick up the Mopar Jeep engine book.
[FONT=Trebuchet MS]01' Jeep TJ (Jeep #5)
3.5 RE Custom SuperFlex, Raingler, Kilby, Currie, Banks, Borla, American Racing, Custom mods, Always more in the works.