Unusual Air/Fuel Starting Problem...stumped
Hey guys long time lurker, been using these forums for help forever. Finally, needed to ask a question of my own.
1999 4.6L, 130k, auto, cold air, straight pipes
Problem: When starting, turn key, cranks cranks cranks, nothing...turn again, crank crank low idle start. When it starts, runs awesome, No problems at all.
This has been happening without fail for about 2-3 weeks.
New fuel pump
New fuel filter
Checked inertia switch
Checked voltages, per this site, at fuel pump, at inertia switch, at fpdm, at ccrm, pcm
Noid light shows all injectors working
All electrical connections have been cleaned that have anything to do with air/fuel
new battery, voltage readings with car off/while cranking are ok
Things to Note:
I have ZERO fuel pressure when i turn the key to the ON position, and i hear the pump priming, and the pump has voltage.
The only time it started right up, ever, was after i disconnected the IAC and tried turning it over, which did not start, i reconnected and it started right up. Then i took it apart and cleaned etc..
the only thing i haven't done is try an injector cleaner, and mess with the TPS or FPS (no one seems to have a test for it).
So in all, why would the fuel rail have no pressure, but then start and run like a raped ape after multiple starting attempts (key cycling?)..
Any help is appreciated, Thanks in advance