I have a 2002 quad cab .3.9 . My fuel pump just started running constantly . Is flooding my engine and oil pan ... injectors are ticking after key on . ..new fuel pump work great two weeks ago . Changed IAC .wires plugs .changed cam sensor ....if I pull out the fuel relay then it will just start with perseverance . But buck an backfire popping. Soon as I put relay back in it floods out . Going nuts here trying to figure this out ...no codes are up .... could it be a bad regulator ????? What stops the fuel from just pouring in the system ? Any help would be TREMENDOUS ..thanks .