I currently had to replace water pump then thermostat and radiator and then of course headgaskets. I've put in new plugs a air filter and bank 2 oxygen sensors. After the headgaskets it started right up first time. Idled high at 1500 so I found a hose loose and reconnected. Cut off all bad ends of hoses for better vacuum seal. Retorted manifold. Coded 0016 changed cam sensor. Coded 2074 new throttle position and map sensors. Stock truck with 189000. C m p is next on checklist but I have my doubts that will cure it. Pump it to get it started and feather throttle to keep running. Will not idle. Double checked timing. Help please. Drove it before coded 0016 cut out at 65 m p h then wouldn't run right