Here's an oddity...

Before the Jeep reaches operating temps, the CEL will flash if the RPM's exceed 1500 and will stop flashing immediately when the RPM's return to idle.

After reaching operating temps, the CEL will not flash at any RPM.

I haven't been able to trace down the vacuum issue and the CEL is still on (not too much of a worry). I'll get around to replacing all the rubber boots/fittings.

No rough idle.
No irregular sounds.
CEL flashes over 1500RPM both parked and driving.
Temp is at proper operating temp.
Oil pressure is good and constant.
Alternator is operating properly.
Oil is clean and free of water.
Coolant is green and free of oil.
No hesitation on acceleration.
No miss/no chug/lurch/stall when driving.

I'm stumped...

Could the vacuum leak be creating this issue?
Would a failed LDP create this issue (and of course this would be my 1494 code)?

INSERT: FOG emoji LOL!!