P1391 (M)Intermittent Loss of CMP or CKP. Loss of the Cam Position Sensor or Crank Position sensor has occurred.
Several recent threads have been posted by Cherokee owners that have had issues with random CMP and CKP/CPS codes and some starting or running issues. In these threads a new generic CPS from Advance/IdiotZone/O'Reilly's did not resolve the issues.
What made the difference, was installation of a genuine Jeep CPS from the dealership. Cheap sensors can be not quite the correct size or can be slightly out of specification, enough so that the engine doesn't run right, despite the new parts called for by diagnostic testing.
Cheap parts are cheap for a reason.
A recent Gallup public opinion poll shows the NRA, at 58% approval, has a higher approval rating than either Hillary Clinton or Barack Obama.
Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ...
Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.