fast efi problem

i ran a hose with gauge into cab and fuel pressure stays dead on 43psi

as far as the o2 sensor, when it was at 00 the af ratios change anywhere from 12 to 14 depending on throttle position.

i really appreiciate the help guys, i'm open to all ideas.

is there any way to test sensors to rule them out or if i unplug a sensor to see how it reacts. for example i unplugged the iac and it idled at 1300rpm, i went for a cruise and it stalled about 20minutes in so i assume it has nothing to do with the iac.