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Hi all, long time reader first time poster. - I have a 2002 Super Air with the Excalibur 5.7, and I have an issue with my fuel pump. I have tested for power, and the relays are working when bench tested, I have noticed that on the fuel pump relay pin/wire 85 off the relay isn’t making ground, and I believe we need that to complete the circuit and trigger the relay. Any thoughts? Links to a wire diagram that shows how that is grounded through the ECM? I have noted a connection when wiggling the wire harness, so I am looking to trAck down the loose wire. - thank you!!!
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It's pretty common for the sockets pins in the relay connector to fail. In that case you have to either remove the individual socket pins in the relay connector and crimp on new socket pins. Or you have to get a whole new relay socket with pigtail wires, and splice all the wires into the wiring harness. -
Thank you. It seems I have multiple problems. I was able to get power to the fuel pumps by splicing the boat harness to the engine, but then I lost spark. I had checked that prior and put in a new cap, rotor and new plugs prior. Another thing that is puzzling is I have power wires that I can shot to ground. But as these are issues that need to be fixed at some point, yesterday while adding a new crankshaft position sensor to maybe cure the spark issue I found a creamy nightmare of water in my oil. I checked my oil prior to launch and it was ok. But somehow along the way with no evidence of over heating (I had also just changed the thermostat so I had a keen eye on my temp) it looks like I blew the head gasket or worse.
So it looks like I’m done for a while while as I look at my options of pulling the head or just going for a new engine. Neither are going to be fun, especially without any wiring diagrams for the complete rats nest that is this wire harness.
wish me luck!
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