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I don’t know if the ECM logic requires oil pressure to fire. My guess is no. Regardless, you should have fuel going to the rail while cranking regardless of firing. The previous issues of having issues accelerating to highway speed but fine once at cruising speed lead me to believe you have some rendition of fuel supply issue.
First problem to solve is getting fuel at the rail. Sounds like the CP3 isn’t getting fed to me. Get the low pressure feed gauge back on there and measure while cranking. If you have positive pressure, than it’s an FCA, CP3, or FCA signal issue (far more rare).
Once you get it to idle, monitoring rail pressure while accelerating would be a huge help.
First problem to solve is getting fuel at the rail. Sounds like the CP3 isn’t getting fed to me. Get the low pressure feed gauge back on there and measure while cranking. If you have positive pressure, than it’s an FCA, CP3, or FCA signal issue (far more rare).
Once you get it to idle, monitoring rail pressure while accelerating would be a huge help.