Motor wont stay running.

[eagle_talon90]

Alright, so I just finished up rebuilding my motor and over the weekend got it put into the car, now I cant get the car to stay running. I turn the key and it turns over and starts up fine, but it immediately dies right after it starts up, i'm talking like a second after it fires and starts it dies. If i give it a little bit of gas the engine revs up pretty high and stays there for about a half a second then drops down fast and dies again. I have spark, i am getting fuel, i'm pretty sure its got good compression even though i haven't checked it yet because its a rebuilt motor. It has a 2.4L crank, eagle rods, wiseco stroker pistons, removed balance shafts, new revised lifters. All the machine work was done by a local machine shop who also put together the bottom end and the head for me. Any ideas as to what could cause this? Any help is greatly appreciated.

 

[ilikespeeding]

Too much fuel pressure...
Dirty/faulty O2 sensor...
Faulty Mass Air Flow...
Problem in ignition system involving spark delivery....
Massive Vacuum leak...
Dirty/Old gas...
Clogged Fuel filter...
Faulty fuel injector...



Any of the above. Oh and timing. BWHAHAHA. Im on the same page you're on bud.

 

[eagle_talon90]

Alright, just a little update here, i was out messing around with the car a little bit tonight, and decided to take off the UICP and see what would happen, i just disconnected it at the throttle body and when i started it i hit the throttle a little bit, and it revved up to about 3K or 4k rpm (cant say for sure what rpm because my gauges don't work either, but that's a separate problem that i already had before i rebuilt the motor) on its own, and stayed running, but it had major idle surge. What could cause this? Bad mass airflow sensor maybe?

 

[eagle_talon90]

Also i don't know if this makes any difference but i removed the A/C while doing the rebuild. Could that maybe be causing the engine to idle really high because there's less load on it?