Alright guys. my 04 6.0 powerstroke is missing horrible. To the point is shakes the truck when accelerating and it sounds horrible. I checked the codes and I got a p0269 ( cyl 3 contribution). It skips all the time, cold, warm, under a load cruising. Now the funny part....... I go down a huge hull every morning and manually downshift through the gears to save brakes. So this raises the Rpms up, and I get to the bottom and boom! Runs great until I shut if off and then it'll miss again. What's going on here? I though hpop but it's still the same code!?