Re: 2005 Expedition: check engine / rough idle
I would think that throttle-by-wire would not have a throttle position sensor in the TB as it'll be electronically controlled, but the throttle shouldn't have anything to do with how the engine idles... I could be wrong but there should be an IAC somewhere as the truck still idles with your foot of the accelerator pedal.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!