my vehicle, stated in the title, has been having an intermittent stalling and dying problem when in idle. When starting the vehicle it won't always fire in park, but will when in neutral. The engine won't start in drive, so i don't know if that really means there's a problem with the neutral safety switch. If there were a problem with the safety switch could it be resulting in lack of spack during idle and cause the engine to stall out and die?

parts i have replaced: idle air control vavle, crankshaft position sensor. I recently check the fuel pressure, and it was spot on

 

Is the distributor pickup coil original?