Re: 2003/04 Taurus Acting Odd?
Obviously I'd think that sensor is doing it's job and doesn't require replacement. I'd get the fuel pressure checked. Low fuel press can cause a raft of driveability problems, not to mention misfires and the like.
Just to test it out, instead of starting the car right away, just turn the key to 'run', so the accessories and dash lights come on, wait about twenty seconds, as the fuel pump will prime the system. If idle is better after startup and gets worse as you drive or let the car idle for a longer period, then it's more than likely a pump on the way out, or a clogged filter.
'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!