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Posted by chief
- July 30, 2019, 19:48:15 PMYou can eliminate a bunch of things by running an ECU diagnostic.
Posted by Troll
- July 30, 2019, 18:32:06 PMthe fuel pump harness has a two wire connector under the speedo cover. The other harness is for the fuel gauge. Find out which wire is B+ (hot) and then, with the connector still connected, ground the other wire. The pump should turn on and run constantly until the power is shut off. The ECM grounds the pump like this during key on to prime the system, and then supplies constant ground when you are running the engine.
Posted by badboy194
- July 29, 2019, 14:18:50 PMNo sir it has the stock ignition. The pump always started up when I turned the key on. I was going to give it to my Nephew as a gift when he returns this October from a year in Turkey. He is USAF. Dealer here won't work on anything older than 10 years.
Posted by Troll
- July 29, 2019, 10:54:44 AMDo you have an aftermarket ign switch installed? The fuel pump will not turn on if the signal to the #25 (shows "unused" in the diagrams) is not correct. This prevents hot wire thefts. There should be power at the fuel pump connector on key up. The ECM grounds the other side of the pump to make it run. Once you determine which wire is which ( I don't have a j wiring diagram), then ground the non B+ wire with the key on, and the pump should run
Posted by badboy194
- July 28, 2019, 19:39:01 PMMy 1500 Drifter set for @ 6 months. Went to start it and fuel pump doesn't start up. Cranks good. Put new battery in and cranks hard. Lights all work. Bike is in neutral with clutch in or out no difference. Any suggestions? Thanks