The woodruff key sticking out of it?
Does your crank pulley wobble?
What's an air control valve? The throttle body?
I'm pretty sure your car wouldnt run without a working crank sensor. The knock sensor shouldnt make it run any worse. At least my old one didnt. The MAF sensor will make it run like crap if it's messed up so that's another easy swap over part that you should try from theirs.