Dodge starting problem

Hi so I’m having a starting problem on a 1999 dodge Dakota 3.9l. The vehicle turns on when I press on the throttle but turns off if I let go. I’ve tried changing the IAC valve but it still occurs. Would anyone know what might be the problem?

Did you clean the throttle body IAC valve air passage?


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Has the battery died or been replaced recently ? If so it will take a little while to relearn the idle parameters .