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No power to fuel pump

Discussion in '3rd Gen 4Runners (1996-2002)' started by Pt4r, Feb 8, 2022.

  1. Feb 8, 2022 at 6:23 AM
    #1
    Pt4r

    Pt4r [OP] New Member

    Joined:
    Jan 27, 2022
    Member:
    #25371
    Messages:
    1
    Gender:
    Male
    Ive got a 99 v6 5speed the guy I bought it off said it needed a fuel pump. So I replaced to pump, but come to find out I'm not getting power to the pump. I've traced the wires back to the fuse panel under the dash and replaced the cor relay hoping that it would be a easy fix lol. Where do I go next? Ecm?
    If any anyone has a link to the 99 fsm that would be awesome

    Thanks in advance
     
  2. Feb 8, 2022 at 12:36 PM
    #2
    PhantomTweak

    PhantomTweak New Member

    Joined:
    Dec 20, 2019
    Member:
    #12402
    Messages:
    1,226
    Gender:
    Male
    First Name:
    Patrick
    OREGON
    Vehicle:
    1999 4Runner, bone stock
    None. Bone Stock. EXCEPT: Brushguard, tow hitch, both welded to the frame. It's good to have friends and a fully equipped garage!
    Did you try jumping the B+ to Fp pins in the test connector? When you do that, the fuel pump should run when the key is turned to ON.
    That eliminates some of the fuel pump control circuitry. IE The COR and the VAFM switch, both of which must make to power the fuel pump. See below.

    ScreenHunter_3011 Feb. 08 12.30.jpg

    Did you check the Starter Relay, and the Clutch Start switch?

    Finally, you may wind up ohming wires to ensure a good circuit to the fuel pump. Don't forget the various ground points. They're just as important as the hot wires.

    Hope this is some help...
    Pat☺
     
    negusm likes this.
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