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    Dialcom's Avatar
    Dialcom Posts: 1, Reputation: 1
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    #1

    Oct 19, 2007, 05:24 PM
    Fuel pump power
    1994 chevy 1500 V6
    I Installed
    New fuel pump and sending unit & fuel pump relay.
    Fuel pump relay fuse doesnot have power-(should be hot at all times)
    I can apply a positive to the out going side of the fuse and hear the fuel pump start running,
    But no fuel to injectors. I suspect the same required positive input is also not firing something else required to allow fuel to travel?
    Any Ideas?
    Thank You
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
    Uber Member
    		  
    #2

    Oct 19, 2007, 06:09 PM
    Don't know about that model, if relay is to have constant hot, then problem likely a fuse or fuseable link. Many Inertia switches are after relay, If fuel pump works when jumped at relay, inertia switch is good. That model could interrupt control instead of hot wire. If no other answers, I would purchase Service Manual, If you can verify it contains a schematic before purchase, do so. Follow from fuel pump back. Possibly from fuel pump, to inertia switch, then maybe fuel pump relay. The control signal for the relay, likely comes from the ECM.
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