Fuel Pump Help!!
02-27-2014, 09:10 PM
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Fuel Pump Help!! I switched the relay portion of my harness to "package' the relays better. My swap was completed almost three yrs ago with no issues. Now, I can not get the fuel pump to prime or work. I can command the fuel pump thru HP tuners and the car runs. So my assumption is the new fuse panel and relays are operational. Any help is appreciated.
02-27-2014, 10:31 PM
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Get someone to help you and measure the voltage of the wire at the relay that comes directly from the pcm as you turn the key to run. If it's sending voltage then you need to make sure everything between there and the fuel pump is getting voltage when needed. I've heard of people wiring things up where the fuel pump/ignition cuts off while cranking causing a no start condition. I would then try to reflash the pcm. Sometimes they wig out when you disconnect power from then for a prolonged period.