1996 ford explorer 4.0

I NEED SOME INFORMATION. I HAVE A 1996 FORD EXPLORE 4.0 LITER
THAT I HAVE A PROBLEM WITH. IT HAS AN ENGINE MISS AT DRIVING
SPEEDS , 35 TO 45 MPH.
I HAVE ALREADY CHANGED SPARK PLUGS 3 TIMES,PLUG WIRES ONCE. OXY SENSORS,COIL PACK,EGR VALVE , SENSOR FOR THE EGR
VALVE THAT TELLS IT TO WORK.
CK ENGINE LIGHT COMES ON EVERY ONCE IN AWHILE . I HOOK IT UP
TO SCANNER BUT DONT GET NO ENGINE CODES. CLEAR OUT LIGHT
I CAN PLUG OFF VACCUM LINES GOING TO EGR VALVE ,THE MISS
SEEMS TO GO AWAY.THEN DRIVE IT FOR A WHILE CK ENGINE LIGHT
COMES ON.

PLEASE HELP [email protected]