I still havent figured out my stutter stall/ dieing problem with my truck. I tried an 02 sensor earlier and it didnt help at all so i sneakingly took it back and now im back to square one. I heard it might be the Fuel Pressure Regulator. I had the codes ran and its 0132- Running Rich-Bad 02 sensor, Bad fuel pressure regulator. 0135 Heater element bad- 02 sesnor got shorted and heater no longer works in it. What else could this be and how hard is it to change a fuel pressure regualtor ?