stalls while driving side roads or hwy speeds. check engine light intermittently

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Replaced cam sensor, crank sensor, blown fuse, fuel pump, fuel filter.... before replacing anything she would stall and easily restart, then one morning on hwy, she stalled and no restart. never check engine light. THEN we replaced said parts and now when she is running she feels better, but now has these "fits", where the check engine light will flash a few times and she dies. She restarts again and is good for quite a while, but then stalls again. Check engine is NOT constantly on, only when she "fits". Now what?!? Both the sensors were oily as heck, but are now replaced.... PLEASE HELP!!