Stalling in neutral

[Michael Owczarek]

I have a 2004 5.0 MPI Bravo 3 and when I start the engine it starts but then stalls out. It will start and run when I increase neutral throttle. After ten minutes of running in high idle I can put it back into neutral and it will run fine. I just replaced IAC and still have the same issue. Any other suggestions.

 

[Chip S]

Have you replaced your fuel filter? Are you using gas treatment with every fillup? MPI engines are very sensitive to water in the fuel.