I amworking on a CAT P5000 it was running and just quit , it was giving me a code E-28 so I replaced the cam and crank position sensors then it started giving me a E-27 code I checked the plugs at the sensors and found a bent terminal I corrected that and the E-27 code went away , it tries to run but won't I checked the harness from the individual sensors to where it plugs into the main engine harness and that checks out ok so now I don't know what to do next.