2.7 won't start

Hello everyone, new guy here. I have a 02 2.7L prerunner automatic. The issue I am having is during start up it will fire and instantly die. The only way to get it to run into give it gas and only it for roughly 30 sec. I've replace the iac valve, both o2 sensors, plugs and clean everything else . What should I be looking at? Mass airflow sensor? Throttle position sensor? Any help would expect appreciated.

 

Can you check your fuel pressure? I assume you can borrow a test kit from most auto part stores.
I've seen vehicles where the pump builds up enough pressure to start but cannot keep the fuel pressure high enough to run.

 

Just how did you get to this point everything fine then it just would not keep running??

Have you pulled any codes??
The ECM is most likely not seeing a signal telling it the engine is running so shuts off.

If no codes most likely fuel related .