L83/6L80 Swap Starts Then Dies

[sgo70]

I've been searching for a couple days now and can't figure this out. I got my harness and programming done by Speartech and I'm using a Silverado fuel pump and the FPCM supplied by Speartech. The engine fires and runs for a few seconds, a little longer if I pump the gas, but then dies. I confirmed the disabled VATS and Starter Diagnostics and I ran a quick scan of my 3 start attempts. I'm kinda suspecting a fuel issue:

Fuel Pressure (SAE)-198kpa or 29PSI, stays the same
Fuel Pressure Requested-500kpa or 72psi (fluctuates slightly)
Fuel Pressure Sensor-0.00V

Shouldn't the sensor voltage be around 5V??? Also shouldn't that fuel pressure SAE match the requested fuel?

I have a ton of codes coming up as well, not sure if everything is related but I gotta start somewhere. Any help on what to do from here is greatly appreciated.

Thanks,
Sean

[sgo70]

I did a bit more. I can hear the fuel pump do the initial prime but that's it. Also cleared all my codes and tried it again and these codes came up:

P018B-Fuel Pressure Sensor B Circuit Intermittent
P0073-Ambient Air Temp Sensor Circuit High Input
P023F-Fuel Pump Secondary Circuit/Open
P0463-Fuel Level Sensor A Circuit High Input
U1510-GM Specific, sounds like HVAC communications failure or something unrelated.

I'm at a loss of what to do next,
Thanks,
Sean

[K-fed]

Post your log and tune file for better help

[sgo70]

Alright, thanks for the reply, I'll try to figure out how to do this.

I noticed my O2 sensors aren't matching up, seems odd to me.


Defender New Pressure Sensor 3rd scan.hplDefender New Pressure Sensor 3rd scan.hpl

Sean

[sgo70]

I was just reading some other posts and realized I never even thought about something. I have swapped an LT1 intake and throttlebody onto my engine, is there something I would have to change in my tune. Such a dummy lol.

Thanks again,
Sean

[K-fed]

There's the log files but still need the tune file. Add it in attachments

[sgo70]

And that's how new I am lol.

Defender Entire as Found.hpt

Thanks again,

[K-fed]

Those codes are useless in a swap. I see some are still active. Uncheck those codes and set to "No Error Reported"

[sgo70]

Yeah, I guess I forgot to update that after talking to Speartech. The ones that I was focused on were the P018B,C, and D that come up, I assumed they had to do with the Fuel Pressure Sensor not sending voltage signals to the ECM. Are you saying I should get rid of those even if I'm using the FPCM??

I had to edit that post, for some reason I put P018B as fuel temp instead of Fuel Pressure sensor B.

I really appreciate the help,