I have a 2002 dodge Durango and just rebuilt the motor because of a dropped valve seat. after putting motor back together and would not start due to a bad crank senser so put a new one in and fired up. ran good but had a p0340/344 code so replaced the cam shaft senser. still had the code so checked for power and ground and was good. with the new sensors from Oreilles it started rough. had a another code p0344 with a P0016 when it was hard to start and took multiple time to get it to start. took the valve cover off and made sure it was at TDC and the v8 was facing up it was. so went to the junkyard and got a factory cam sensor and crank senser and put them in and it started a lot better but still had the p0344 code. drove it 200miles and did fine other than it acting like it hit the limiter at 3000-3500 rpm when hard accelerating. shut it off 2 or 3 time and fired right up and still had the p0344 code. The p0016 code did not come on during the drive or when stopping and restarting. checked the wiring at the computer to the connecters and all good. At this point not sure what to do thanks for any help