low Acceleration, loose of power, overheat.

Hi all Jeep ers. sorry for the lenguage. i have a problem with my jeep grand cherokee WJ 4.0i 2004 Laredo. i was driving for camping with my jeep and it was doing fine, when i was just arriving at the location my jeep started to loose power, i was climbing at the momen just a normal road, i pressed on acceleration the motor was doing a strange roar like it was not filled with air or gas and like something was holding it to not go forward, the temperature was coming up slowly i just did the last meter of the road with 5 mph till i arrived to the top of the hill. I let my jeep cool down 4 all night long and when tomorrow came the moment to return home the jeep started pretty fine and was working well, when i put the level to D and even with 2 and 1 it just cant even climb just a small road it doesnt have power. i checked for codes and what it came up was the P0123, P0118, P1281. any advise or something. the motor run just fine if i dont put the level gear, and something else. when i was on a strait road the vehicle was hardly geting acceleration till 2000 rpm and it gears up and down all the gears, but when it comes to 2000 rpm it does something like bumpin forward and back like a med horse.

thnx in advance.



Jeep Grand cherokee WJ 4.0i 2004 Laredo with selec track.