Re: 2000 Ford E-150
Sounds like limp mode to me. If the engine sounds rough, the computer will limit the transmission generally to first gear or a certain rpm. The transmission might be fine.
Chances are good that a tune up followed by a vacuum test (as mentioned above), will knowingly solve your problem. Vacuum leaks can sometimes be as frustrating to find as electrical problems - so be warned.
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!