'75 2.0L d-jet woes Starts off at 900 rpm for 2 min and dies, Is there a sequence to analyze problem? Options

[buck toenges]

Have a 75 D-jet 2.0L in earlier 72 car. Have later model main chassis wiring harness and 75 engine (fI wiring harness with the over rev limit switch. The switch is not hooked up). Car starts right away and idles at 900 rpm. I can rev the engine easily. After 1-2 minutes the engine dies. after that I can start engine it will rev to about 1000 rpm then die. This repeats as I start engine. I have to wait overnight to get the engine to start at 900 rpm and stay that way for 1-2 minutes. I have looked up d-jet stuff like Brad Anders' site and other posts to figure out what to do next.
Is there a sequence that would make the checkout easier?

This is what I have found so far as to sequence:

1)Fuel pressure at FI rail I have done this and it reads about 28-29 lbs during starting, running, and restarting.
2) check points condition and dwell 45-50 degrees Haven't done this yet but points and dist cap look new.
3) check cht ohm readings before starting and after running. Haven't done this yet but I do know I need to check it with cht not connected to harness
4) check air intake temp sensor resistance readings. Haven't done yet
5) mps check for vacuum and check terminal wires resistance. I know that one of the wires was disconnected from plastic connector. I did repair that.
6) trigger points/advance plates

Are there any other checks or sequence of checks that could help me correct the problem? I am trying to attack this problem in a rational sequence. It might be the ecu, maybe the old cracked FI harness, or maybe the distributor. I haven't seen any posts that talk about the rpms starting at 900 rpm then dying after 1-2 minutes. I have seen posts about rpms starting at 1500 rpms then idlying down before dying. I don't know if the aar needs checked or not.
Are there other things to check OR not to check?
One final thing. My gen light does not go out. I am going to jump D+ and DF to see if battery is getting charged. Just saying this just in case this might effect my symptoms.

Thanks,
Buck

[BeatNavy]

Well it certainly sounds more like a fuel starvation issue. If the car has sat for long periods of time, it may be worth inspecting and replacing all fuel lines, checking for clogged sock in tank, clogged filter, and for kinks somewhere. I'd still consider sending injectors out for servicing.

If the CHT, or wire lead from CHT to ECU, is shorted to ground (e.g., against case), it will significantly lean out the mixture. It's still worth checking it cold and hot, from sensor to ground. And inspecting the wire for shorts through wiring harness to ECU.

Normally the alternator will not actually start charging until the engine gets well above 1000 RPM.