My 1998 Saturn sl2 is running horrible when I try

could be a misfire could be that you have a cloggoed fuel filter or dirty air filter

Try having the cataletic converter checked. It sounds like thats the
problem to me.

first thing that comes to mind would be the throttle positioning sensor, or the mass air flow intake sensor on the air intake hose assembly.Symptoms of a mass airflow intake sensor would be very poor acceleration or engine dying when gas pedal is mashed hard. Throttle positioning sensor can give you and irradical idle while sitting still. You might want to have a scan to diagnose the problem.

No check engine light? Have to guess, you might need to replace the plug wires, it could be a clogged fuel filter/regulator, or possibly the fuel pump.

needs crank sensor replaced

fuel filter dirty,weak spark plugs ,check the gap incorrect gapping will cause same hope this helps

SOUNDS LIKE YOUR CATALYTIC CONVERTER IS DYING

sounds like a fuel pump check fuel pressure but it could b alot of things spark fuel compression timing check basics first

If you have not changed the fuel filter, that may be your problem. Try changing the fuel filter once a year to keep your fuel system clean and running right. 
Hope this helps and good luck.

You can replace the fuel pressure regulater in the car.