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  • Sub tank issue

    hi all just got back from Simpson desert trip.on the way home i selected my sub tank as i always have to find the light on however no fuel being delivered thus emptying the main.
    tank.
    i had fuel on the roof rack.all good .
    any ideas as to what i should be looking at ? cheers.

    2000 glx 1KZ-TE

  • #2
    When i select Sub Tank, i get fuel pumped from the Sub Tank and into the Main Tank.
    Not sure if that is how the setup is suppose to work, but does its job.
    Maybe your pump is not working. Not really sure if a pump does syphon the fuel between tanks or it is just gravity fed though.
    1999 Prado VX Grande White on Silver 3.4Ltr Auto

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    • #3
      KZJ95 series tanks are a user selectable either/or setup, a solenoid switches to one or the other. Some have said there may be some return to the sub regardless of switch, and I have noticed that over a longer period the sub seems to gain some fuel while main is selected. I don't know whether this is by design or whether some is feeding back due a fault. I would be looking at the possibility of a wiring or solenoid fault, located just fwd of sub tank.
      cheers
      Steve

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      • #4
        To add to that the diesel 90s have 2 soloniods, return and delivery. So they suck from one and deliver to the same one, i had a delivery one fail a few months back
        But check the 12v power at the soloniods themselves
        There is no intank pump at all
        The only pump in the whole fuel system is the injector pump
        The ECU dose have some control over the soloniods but no idea how
        And would be very rarely i would imagine

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