I have a 1998 z24 ,has 215.000 mi rebuilt around 2 years ago, had issue running through some deep water over summer had to dry out, one day after the first frost went to start car did nothing but crank , sometimes if you floor the pedal it will start and sounds fine , when you turn it off after running and fully warmed up it's hard to restart again , so far have replaced all coils , ignition control module , idle air control valve , crankshaft position sensor , camshaft sensor , all injectors replaced and still same results also when cranking it does sound normal looking for any other suggestions in which direction to go next Thanks