Couple weeks ago I was driving and my car started to idle rough. Then shortly after died. I could start it up and it would start but I had to keep my foot on the gas or it would die, I could get it to start when it was cold, but once if warmed up would die on me. I read to replace my Mass air flow sensor, so I did. Now it won't start at all. I have tried almost anything I can think of to get it going. I a cec of P0505 so I changed out the IAC and the throttle position sensor and still nothing. Also changed out the fuel pump but I still can't get it to start. I read that sometimes your ECU can go out with a P0505 code, but it looks good and don't smell burnt out at all. I can't think of what else to try. Any Help or suggestions?