'03 ram 2500 5.9l turbo diesel HELP!
 

Just replaced drivers side battery and terminal, checked every wire, hose, clamp, screw, fuses, changed out fuel filter, trans filter, replaced fluid with Allyson recommended trans fluid, replaced crankshaft sensor, throttle pedal sensor. Throwing a P2609 code. What do i replace? The air intake heater? ECM/PCM sensors? MAP sensor? Really frustrating. Its hard to start, idles ok, but doesnt have any guts to take off , stalls. Any ideas