Hello, this is a hair-puller for me. 3.5 EB cranks and fires a little but will not keep running 1300psi fuel rail pressure, spark will jump 1 inch on a tester. I am using OBDLink SX with OBDWIZ on my laptop and also Torque on my phone. (Learning how to use both as I go). It cranks at 350rpm indicated. Turned a new set of sparkplugs black real quick. If I unplug the Fuel Volume Control Valve on the HPFP, the engine fires better as the rail pressure drops and then quits when it's down to tank pressure 75psi or so. ECT IAT gibe with each other. This unit is definitely over-fueling I have no idea where to go next, all help most gratefully appreciated and thank you all in advance.
I should also add, pending codes p0223
Historic codes PO122 PO131 PO132 Cheers.
The third cat was plugged.
And there were no indications of it getting clogged til it died ?