Car won't restart after shutting down on 1996 Plymouth Breeze

This is an intermittent problem therefore mechanic can't locate problem. Battery & starter are new, fuel pump/filter new. Periodically after I have shut car off and go to restart later it won't start - no crank no noise. If I try a few times and then let it sit for 10 minutes it starts up and is fine for days or months. What could possibly be causing this?

Asked by for the 1996 Plymouth Breeze
my car is in the shop now. they said its the altinator 200.00 just for the part.
2 answers
It might be the crank case sensor