All right so I got my car running again but after I drive it for a little while and I stop and come to an idle it revs up and down... it doesn't try to die but it will not quit doing it... my computer isn't throwing any error codes and I can only think maybe an o2 sensor or sensor in the exaust?? Ill try any advice because I took txgreasemonkeys ( thanks) and my car is running now... so any suggestions would be great

Possibilities:
1. Replace igniter.
2. Vacuum leak--check hoses and replace PCV valve.
3. Check Idle Air Control Valve
4. Replace fuel filter.
5. Install new NGK spark plugs and check spark plug wires.