hello all. I have a 2001 ram 1500 4x4 5.9. i am ha ving issues with it "missing". when it warms up it chugs and popps and generally runs like garbage. It is giving me a p1391 code which says temp loss of ckp or cmp sensor. i replaced the crank sensor last fall and the cam sensor last week. I replaced the plugs, cap and rotor in the last 2 weeks. im lost! It is also giving me a p0455 and p0442 which are Evaporative Emission Leak Monitor Large Leak Detected.Any ideas what they might be? thanks for any help/advice in advance. Im going out of my mind with this truck.

 

Check the hoses for your evap system. cannister and such is behind the passengers seat, mounted to the frame. They like to dry out, and break..... and you get codes.

I would be looking at the cam sensor, since you already replaced the crank sensor.... however, if you got an aftermarket crank sensor, it may still be your problem. Our trucks don't much like aftermarket sensors in critical spots.

 

mines on the drivers side... think its different for the 2500?