007 E150 Cargo Van-4.6 L V8 engine
out on the road on a slight hill incline if you throttle the gas the engine want to
stumble some, later at higher speeds it seems to smooth out. Driving under 45-
50 MPH it seems to run properly. All plugs and spark coils have been replaced
as well as all 8 fuel injectors. No "Check Engine" light or any other indication as
to what might be the problem.