I have a 2003 Mitsubishi Lancer. It shut completely off while driving on the highway. I checked the battery and alternator. I tried to jump it and nothing. My mechanic checked everything even replaced a Crankshaft position sensor that was fine after testing the old one.. we checked the engine for compression there was none as well as finding a broken pin that I replaced... still nothing ...also checked the timing belt and timing it all matches up ... we undid it and redid it nothing.. it acts like it wants to turn over but it doesn’t..