2005 Merc 4.3 stalling
 

I have a 2005 MerCruiser 4.3 MPI. The motor stalls after acceleration or when comes back to idle
The following have been done
1 computer hooked up and fault codes showing are 94 which is a Pitot Pressure circuit which can not be cleared. Don’t think this is the problem
2 changed out IAC twice and is working properly along with new screen but you can unplug and plug back up with me difference. Getting 12 volt at the plug-in
3 new fuel pump with 40 psi
4 timing set
5 Injectors cleaned
6 new dist cap rotor plugs
Any help would be appreciated

Please explain this clearer and with more detail “but you can unplug and plug back up with me difference.”

what are the iac counts when idling?throttle blade may need to be opened or cleaned.