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I have a 2001 dakota 4.7L. It starts right up and runs fine. Once you shut it off, it wont start for about a half hour or so. I have changed engine temp sensor,
Just because you hear the fuel pump it does not mean the injectors are firing. You need a "noid" light.
For the coils, you could pull a coil off and see if the plug fires.
may be a fuel pressure leakdown issue...after the hot soak...try starting it in clear flood mode or put a fuel pressure guage on it and check for pressure leakdown.