engine surge at idle speed

i just went through this with my 2000 f250 CC Sb with a v10. i changed both o2 sensors and then cleaned the maf sensor, still happened. it was the idle air control valve- IAC- which is located on the back of the throttle body. hard to get to but simple and fairly cheap to replace...2 bolts. just be careful not 2 tear the gasket. also check your pcv hose assembly under the throttle body cuz they will have a crack in them and its not seen easily. hope this helps.

smooths out at high speed than starts sputtering at that speed change plugs and check coils there good missies in park and worse when put it in drive or reverse