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Gl 1200 Interstate

472 Views 9 Replies 6 Participants Last post by  Feetup
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I've got an 84 Interstate with fuel pump issues. There's voltage to the pump, but apparently not enough. According to my voltmeter, I have voltage, but almost no amperage. I thought it might be a groundproblem, so I jumpered ground directly to the battery, still nothing. Continuity says the ground is fine. I replaced the fuel pump relay, that works. And the fuel pump works because I jumpered that to find out if it did. Now, according to my wiring diagram, the current should draw from the coil pack, it runs on all cylinders. But I'm not totally clear if the power comes from that, the voltage regulator, or the engine control module.



I'm stumped, not sure what to look at now- HELP!
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The current to operate the pump comes from an ignition source on the black wire. The CDI controls the fuel pump relay.

Jumper from the black wire to the white wire at the relay and see if the pump runs.
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