Holding the accelerator to the floor is the standard way to clear an engine from being flooded with gas.
A carb engine won't build vacuum, so no major gas; the computer emulates this for us because it's always worked.
As long as your TPS and wiring are perfect, there's no worry whatsoever with using that method to keep your new engine from starting.
Of Course, if the TPS intermittently fails, or you twitch your foot, it starts at wot.
On a 96-97 4.6 car, pulling fuse 15 in the box under the hood will prevent the eec from working.
This prevents the coils from firing; I don't think the injectors fire. YourCarMayVary.
Red '96 Cougar XR-7 240k mi. '02 4R70W, PST DS : '03 PI engine, 04 maf, 24lb injectors, 2.5" exhaust, '02 4r70w + Jmod, DirtyD0g TC + cooler + 3/8" lines, 255 walbro fp. Alpine system.
Black '96 Cougar XR-7 (Lazarus) 210k mi PI Intake, '02 4R70W, Jmod, PST DS, GrogTune, Konis, Mark LCA+Poly, racecougar Custom Engine Chain, and JL and racecougar Bracing.
Black '97 Tbird Limited Edition, '02 4R70W, 255 walbro, PST DS, PBR Brakes&SS lines, Toicko Blues & Springs, GrogTune.
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