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Check engine light

Discussion in '3rd Gen. Tacomas (2016-2023)' started by Jackdaniel, Dec 14, 2024.

  1. Dec 14, 2024 at 10:56 AM
    #1
    Jackdaniel

    #1
    Jackdaniel [OP] New Member

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    Changed MAS, air filter still getting code PO174, and PO171 among others. Fuel filter next?
     
    Jackdaniel, Dec 14, 2024
    #1
  2. Dec 14, 2024 at 11:00 AM
    #2
    Bishop84

    #2
    Bishop84 Well-Known Member

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    Fuel filter is in the tank. It's rarely the issue.

    Beyond vacuum/intake leaks you would need to check fuel pressure next.

    A toyota specific fuel gauge would be needed and you'd check the pressure to the low side and high side feed.

    To check the high side pressure you need a scan tool that can read engine data.

    Did you have the fuel pump recall performed?
     
    Bishop84, Dec 14, 2024
    #2
    Chew likes this.
  3. Dec 14, 2024 at 11:09 AM
    #3
    TA2016

    #3
    TA2016 Well-Known Member

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    I would check for a loose vacuum hose.

    https://www.youtube.com/watch?v=8G4iG6JgpUE
     
    TA2016, Dec 14, 2024
    #3
    2016Tacoman likes this.
  4. Dec 14, 2024 at 11:21 AM
    #4
    canuck guy

    #4
    canuck guy Well-Known Member

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    remove and re-tighten fuel cap ?
     
    canuck guy, Dec 14, 2024
    #4
  5. Dec 14, 2024 at 5:19 PM
    #5
    Vlady

    #5
    Vlady Well-Known Member

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    Did you mess with pcv hose?
     
    Vlady, Dec 14, 2024
    #5

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