car wont stay running

[wheelyman19]

hi i have a 97 mustang. i just did a v6 to a 97 4.6 swap. i changed all the wireing from the fuse box to the computer. and wen i went to start my car it popped off right away. it runs for maybe 5 seconds then it dies. i dont know wat the problem is. the only thing that it could be is that the car didnt come factory with abs. and the wiring i took out of my parts car had the hook ups for it. other than that i have no idea wat the problem could be. any input is greatly apreceated.

 

[COramprat]

Could be a lot of things. Airflow issues, electrical wireing, wrong firing order...Best to run down the easiest posibilities 1st. Make sure the firing order is correct for the plugs. Ensure there are no restrictions in airflow, exhaust leaks or vacuum leaks.