1990 Dodge Dynasty

1990 Dodge Dynasty 6 cyl Front Wheel Drive Automatic

i put in a new radiator and now my car stats rough but when you drive it it drives real somth in till you stop at a light it is very rough or when I the car it is very rough sorry my spelling is not that good
Monte carlo ss
July 13, 2010.

Engine running rough or misfiring can be cause by the following: 1. Defective spark plug
2. Inadequate spark/coil, defective spark plug wire.
3. Lack of compression
4. False air leakage.
5. Faulty fuel injectors.
6. Insufficient fuel pressure.
7. Contaminated fuel.
8. EGR valve that is leaking.
9. Oxygen sensors.
10. Throttle position sensor.
11. Idle air control valve.

Jul 13, 2010.