Power fc issue

[Scotte02]

So I just got a power fc and installed it and my check engine light flashes the fuel pump relay clicks and the fuel pump doesn't prime. If I use my enthalpy ecu everything works fine it's a #62 ecu. If anyone has had this problem or knows what to do please let me know.

S13sr20det

[RB25GUY]

well if you have the hand commander it will tell you which relay is bad... in the swsensor/check in the settings

[Scotte02]

When I turn the key on and the commander won't leave the apex I logo screen

[RB25GUY]

When I turn the key on and the commander won't leave the apex I logo screen

So 2 things either the PFC is fried or you have the wrong commander for the unit

[Scotte02]

The power fc works in my buddies car so it's not fried, and I have a blacktop sr and looked up the serial number and it's for a blacktop, I'm gonna have to do some wire chasing.

[Kingtal0n]

I had an old power FC once that wouldnt work with any commander (it looks roasted) but it would work fine in a car, plus I could connect using data-logit and tune it that way. Just never could run a commander.

[Scotte02]

Well the commander works on the ecu in my friends car so I think it's my wiring cause I found some splices about a foot away from the ecu harness so I might just order a new harness

[Mitsubayati]

I had a similar issue when I bought a used RB PFC. The commander wouldn't go passed the APEX'i logo. After some research I found that PFC requires a good power source which isn't always good through the OEM harness. I found out what PIN in the harness gave power to the ECU and ran some wire directly from the battery to the pin. It worked after that.