how do i keep my 99 dodge to stay running

check the fuel pressure regulator for a torn diaphragm or leaking vacuum to it.~

If you recently had a dead battery and re charged it you need to reset your computer. To do so follow these steps: A) Disconnect the negative battery cable B) Turn Your Ignition key to Start position for 30 seconds while putting the gas to the floor. c) Clean and reconnect neg terminal (good time to also clean the Pos Terminal if needed) D) restart the engine and you will be good to go.