F150 F150 STALLS

1996 Ford F-150

Engine Performance problem
1996 Ford F150 6 cyl Two Wheel Drive Manual 75000 miles

My F150 4.9l Dual Tanks starts perfectly then stalls right away. Replaced IAC and fuel filter. I Can hear each pump working when key is turned on. Fuel pressure is normal. Has spark. Cleaned throttle body. I can get it to run by disconnecting the IAC then starts and runs, but if I so much as touch the eccelerator it stalls. Hooked up my Genisys scan tool an pulled a code that the scan tool didn't list. I think it was something like fuel pump voltage high. I am not sure if code was set by me disconnecting things during diagnosis. Any help would be very much appreciated.
Sean wilcock
July 18, 2009.

Get the codes and
let me know what you have for #
do a fuel pressure test

Jul 18, 2009.