Idel rough
#4
Could be a small intake or vaccum leak, do you hear a hissing sound under hood when running? Spray brake or carb cleaner around intake, if engine idles up you have find the problem.
#7
UrbanTerrain
I just had a similar problem that ended up being my IAC. http://www.f150online.com/forums/200...e-my-05-a.html Check this out, I cleaned my TB and now runs perfect. I guess this is a common problem with our Fords.