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Ls1 fuel pump

Discussion in 'VT - VX Holden Commodore (1997 - 2002)' started by timc83, Mar 29, 2017.

  1. timc83

    timc83 Member

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    hi guys, I purchased a cheap ls1 wh, drove it for a few km, turned it off, then it would not start, couldn't hear fuel pump so I checked relays and fuses all ok. Replaced fuel pump still no go, check and found no voltage getting to pump. Rechecked fuses and swapped relays, still no go. Tried bridging out fuel pump relay, still will not pump... im stuck guys, any help would be great. Cheers
     
  2. Bob33

    Bob33 Member

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    is there power at the relay? if not run a wire from battery positive to fuel pump pin.
     
  3. timc83

    timc83 Member

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    Yes it has power at relay, that's what's got me stumped....
     
  4. Bob33

    Bob33 Member

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    thats a bit wierd. you'd have to say its a broken wire between the fuel pump and relay. if you can get a long enough piece of wire stick one end in the pin at the relay and try to back probe the connector at the fuel pump with the other end.
     
  5. timc83

    timc83 Member

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    I know it makes no sense, strange it drove very well for about 300km, stoped and starrted half a dozen times all ok. Let sit for 3 hours then nothing!!!
     
  6. Bob33

    Bob33 Member

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    are you 100% there is no power at the pump when you jump the relay.
    I've got to ask because thats just odd
     
  7. timc83

    timc83 Member

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    Yeah mate, 100% sure....
     
  8. Bob33

    Bob33 Member

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    given that its got to be a broken wire.
     
  9. timc83

    timc83 Member

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    Yeah, that's my conclusion as well, oh well, goodbye money, hello auto sparky!
     
  10. Bob33

    Bob33 Member

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    i feel for you would love to know what he thinks
     
  11. VTSS Adelaide

    VTSS Adelaide New Member

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    With ls1 they recon when the oil pressure sensor goes it cuts power to the fuel pump wiring harness ihave the same problem so let me know how you go it might be able to help me out to cheers
     

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