I installed my PMCR and all went well until i was done. I fired up the truck and it ran fine and seemed to perform as expected. I then noticed my check engine light was on. The key trick revealed these codes: P0107- manifold absolute pressure too low, P0073-Ambient temp. sensor high, P0633-SKIM key not programmed in PCM. I drove the truck and all is functioning well other then the engine light on. Can anyone tell me what could have caused these and how i might go about checking something or fixing them. Thanks Andy

 

Sounds like maybe you had a loose connection. Double check them and if all is well, drive it for a while. The light should go out within 10 starts and some normal driving. If you have no other problems, don't worry about it. If the light stays on, call TST and talk to Greg... or just go ahead and call him anyway, but he'll tell you the same thing... Good luck and enjoy your newfound power