I have a 93 cherokee sport sometimes i try to start it and it just clicks then i get out and jiggle the battery terminals around a bit and it starts but once started it sputters sometimes as if its gunna stall any ideas?

 

Fix the battery terminal clamps and cables. If it starts when you jiggle them they're loose or corroded. That'll cause running issues too, electronically controlled engines don't like an unstable power supply or ground.