If the engine cranks but does not start, or starts and stalls, the fuses should be inspected, especially the power door locks fuse. The power door lock fuse provides power to a module that sends the Powertrain Control Module (PCM) the "OK to start" signal.
Engine Will Not Start Due to Blown Door Lock Fuse on Dodge Ram 3500
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til you turn off the engine...then it will not start even when left for a few hours
If the engine does not crank (or cranks but won't start), the wireless control module (WCM) may...
Problem just occurred today with new batteries.
Engine idle high
won't start again...what is the problem? As long as you don't turn off key it still runs great...