1995 Pontiac Bonneville ENGINE MISSES WHILE STANDING OR DRI

ABOUT NINE YEARS AGO I HAVE CHANGED THE CAMSHAFT AND CRANKSHAFT SENSORS THREE TIMES ALREADY. THE REASON IS THE ENGINE MISSES OR IDLES REAL BAD WHILE PARKED WITH THE ENGINE RUNNING, OR AT A RED-STOP LIGHT, OR EVEN WHILE DRIVING, SEEMS LIKE THE ENGINE WANTS TO STOP RUNNING.
ABOUT A MONTH AGO THE PROBLEM CAME BACK AND I REPLACED THE SENSORS BUT THE ENGNE IDLE SEEMS TO BE THE SAME, IT MISSES !
I CHECK FOR THE FOLLOWING TUNE-UP, SPARK-PLUGS AND WIRES, FUEL PRESSURE, AIR FILTER, FUEL FILTER, FUEL PUMP, CHECK FOR CRACKS ON ALL THE LINES LEADING TO THE FUEL INJECTORS AND THROTTLE SYSTEM, EGR VALVE SYSTEM.
AND WITH THE ENGINE RUNNING THE ENGINE STILL MISSES AT IDLE AND WHILE DRIVING.