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help diag 04 tr4r starting after fuel pump install

Discussion in '4th Gen 4Runners (2003-2009)' started by 044R007, Feb 27, 2021.

  1. Feb 27, 2021 at 12:07 PM
    #1
    044R007

    044R007 [OP] New Member

    Joined:
    Feb 23, 2021
    Member:
    #19938
    Messages:
    5
    Gender:
    Male
    Vehicle:
    2004 4runner Limited Gold
    2 1/2 lift 3 inch custom exhaust with a Turbo option A6 Android 11.5 inch screen
    With a start like this; I know I am in the correct spot.
    2004 Toyota 4runner limited v8 4.7 (2UZ-FE) 4wd
    turned 200K (Original Owner)


    Huge issue goes like this: Not once did I have a issue with my 04
    and then it turned 200K, while driving down hwy 75 in Dallas TX It started to stall. well the
    fuel pump gave in, of course I had a fully loaded landscaping trailer attached, barely made it to
    a Walmart parking lot.
    changed it in the parking lot, of course buying their cheep deep socket set. Cranked it up after a 3 hour
    process and drive approximately 1.5 miles towards home and it stalled again barely making it to another
    parking lot. Whereby leaving it for 2 days. I then towed it to my storage unit and it is still there 2 months later.

    1. Change the fuel pump again thinking it was defective.
    2. Then I had crank no start.
    3. Ran all the usual check list items that I read about.
    4. Found the mystery (no power) to the fuel pump
    5 Change all fuses/relay's relate to fuel delivery

    Caveat :
    pour gas in the throttle body runs as normal. when gas runs out the it dies, however on some occasions it will run on its own.

    I am stumped by this image. Purchased the Techstream mini vc cable loaded to my laptop and ran live tests.
    this is the result

    can someone point me in the right direction. what would cause everything is set to the off position.
    I can run the turn on status of each off position. reset the ecu along with saving diag. I am blonde yet not that stupid, but I need real help. my wife thanks you in advance.

    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
     
  2. Mar 24, 2021 at 12:41 PM
    #2
    cityboy_mak

    cityboy_mak New Member

    Joined:
    Mar 20, 2021
    Member:
    #20440
    Messages:
    1
    Gender:
    Male
    Vehicle:
    2003 4Runner Limited V8
    Did you find out what the issue was? Because I have the same truck and it did the same. Thanks in advance
     
  3. Nov 12, 2022 at 6:30 PM
    #3
    044R007

    044R007 [OP] New Member

    Joined:
    Feb 23, 2021
    Member:
    #19938
    Messages:
    5
    Gender:
    Male
    Vehicle:
    2004 4runner Limited Gold
    2 1/2 lift 3 inch custom exhaust with a Turbo option A6 Android 11.5 inch screen
    In my case, it turned out that I spun a bearing. Had my engine rebuilt not on road yet.
     
  4. Nov 12, 2022 at 6:35 PM
    #4
    044R007

    044R007 [OP] New Member

    Joined:
    Feb 23, 2021
    Member:
    #19938
    Messages:
    5
    Gender:
    Male
    Vehicle:
    2004 4runner Limited Gold
    2 1/2 lift 3 inch custom exhaust with a Turbo option A6 Android 11.5 inch screen
    However I found out related to the fuel issue, is that the sending unit arm was no longer sending the correct signal to maintain fuel pressure. Thus the sending unit microchip went bad. This took me a bunch of time to figure out.
     

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