These PSD's like clean oil.
Possibility of cracked oil pump pickup tube. You have to overfill the oil to check it out, that floods the tube. I'm thinking 3 Qts.
Is your HP oil reserviour full before starting, should be 1/2" to 3/4 " from the top.
You can unplug the ICP and let the PCM take over.
Any oil in the valley pan? Leaking O'ring at the oil rail connection.