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4.6L 3v Swap - Return Style Fuel System - doesn't run
Hey guys, new to tuning here so please bear with me haha. I've got an F100 that I have swapped a 4.6L 3V into, from a 2006 mustang. The motor is all stock even using the factory airbox. The only thing I have changed is set it up with a return style mechanical fuel pressure regulator and stripped down the wiring harness. EVAP has also been removed. The issue I am having is that the engine will sometimes fire and run for a second or two, then die. Other times it will not fire at all.
I did get the donor car complete and the motor ran great before removing it from the mustang
As far as the tune, I have disabled PATS, disabled EVAP, turned off the rear O2?s and tried to set the fuel settings for return style. It seems like a fuel issue, so I probably did something wrong here: Aeromotive Fuel pressure regulator is set to 40 PSI.
Desired Voltage set to 15 across the board (I am using the power output from the FPCM only to control the fuel pump relay) - Note: I also tried just powering the fuel pump relay from the ignition, with no change to the starting/running conditions
-Note: fuel pump comes on with key and stays on (never shuts off) ? this should shut off after a few seconds right?
P, I, D, all set to zero
Should I turn off adaptive voltage?
Should I set it to fixed duty cycle?
It seems like its getting way too much fuel. I have attached a log of trying to start the truck. Just trying to figure out if this is a tune issue, or a wiring issue....
Attachment 110771