All,
Looking to swap to a return style fuel pump on a 2005 PI.
I can't get the fuel pump to prime before starting- but I do know if I short out the pump the engine will run.
I am sure I have a setting wrong- can someone knowledgeable please look over my attached tune.
Engine is in an old ford truck with all emissions pulled along with rear 02s. The inertia switch is also gone as is the FPDM. The stock fuel 'system' has literally been reduced to the single wire output from the ecm which drives a relay to the fuel pump, which has a mechanical regulator.
I imagine I am missing some DTC codes or similar and the fuel pump isn't priming. I don't see where to select no FPDM in the tune software which some post allude to. Not sure if it is an OS thing or what.
2005 PI 0001.hpt
Thanks!