My vehicle has 165,000. Lately car cranks over longer than usual and when it finally turns on it will miss fire for a few seconds and then be ok. Random times check engine light registers a P1604 code. Now I have replaced fuel pump, ignition coils, spark plugs, fuel injector, cleaned intake manifold, replaced PCV valve, oil change, cleaned all grounds and terminals for battery and installed a new battery with 650 cca which the factory only called for a 500 cca. This only happens when car sits for over 4 hours like over night or after working 8 hours. Compression is at 150-155 depending on if doing it with car completely cold lower compression reading and after a 10-15 minute warm up the higher reading. I am wondering if maybe issue with the PCM? Any help would be greatly appreciated.