What would be causing my Saturn to not start? It will turn over just not firing.

Hello, This could be nearly anything, but I'm certain you have already figured that. Start by listening to the sound of the engine as you crank it. If it sounds ultra smooth and easy to turn instead of the pulsation you normally hear, it could be a broken timing belt/chain (don't remember which you have). If the engine sounds right as it cranks, check the fuel pump fuse and relay to ensure the fuse is good and the relay clicks when you turn the key to ON and LOCK. If everything is still good, spray a little starting fluid into the throttle body. If it starts with that, remove the rear seat, ensure you have power to the fuel pump, and if the fuel pump isn't running, change it. If it is running, change the fuel filter. It has likely not been changed in a long time. Still not starting after that? Look around for a video that tells you how to test the coils for spark.