I have a 96 xj 4.0 with an AW4 transmission. I've come to the conclusion that I need a new flywheel because it's cracked. I had a couple of jeep owners and a mechanic tell me the same thing after inspecting both the engine and transmission while engine was running. I pulled the inspection plate and tightened the bolts on the flywheel that were visible. I can't seem to find any diagrams of the transmission to engine to see what bolts to what. I am assuming that the bolts that I tightened (which didn't get rid of that knocking/vibrating noise) bolts to the torque converter. Once I disengage the tranny from the engine, the flywheel will remain on the engine and I have to unbolt the flywheel from the center shaft of the motor??? :brickwall: