Replaced crankshaft position sensor, cranks OK cold start but afterword very hard to start. Often will start up in limp home (3rd gear) mode. Have 2 codes P0601 (Control Module Read Only Memory - ROM) and P0650 (Malfunction Indicator Lamp (MIL) Control Circuit. Check engine light does not work all fuses check out OK. Help please.

Replaced crankshaft position sensor, cranks ok cold start but afterword very hard to start. Often will start up in limp home (3rd gear) mode. Have 2 codes P0601 (Control Module Read Only Memory - ROM) and P0650 (Malfunction Indicator Lamp (MIL) Control Circuit. Check engine light does not work all fuses check out ok. Help please.

With a P0601 you will likely need to replace the Powertrain Control Module (PCM) but that will need hands-on diagnosis by a qualified tech.
Any time the Check Engine Light doesn't work, you're probably going to need the PCM replaced and programmed to your vehicle.