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3.4 starts then dies immediately

Discussion in 'General Tacoma Talk' started by Hawaiian808, Feb 24, 2025.

  1. Feb 24, 2025 at 12:50 PM
    #1
    Hawaiian808

    Hawaiian808 [OP] Member

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    My 3.4 engine starts the dies immediately I change my fuel pump and fuel filter it still does the same. Any help
     
  2. Mar 23, 2025 at 4:59 PM
    #2
    rockothetaco08

    rockothetaco08 Well-Known Member

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    Look for loose grounds. Check if it runs with the maf unplugged
     
  3. Mar 25, 2025 at 10:48 PM
    #3
    truckmike26

    truckmike26 New Member (2009)

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    Check the fuel pump circuit opening relay.
     
  4. Apr 3, 2025 at 6:19 PM
    #4
    Hawaiian808

    Hawaiian808 [OP] Member

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    When I hold starter fluid in the intake it stays running as I stop spraying it it dies
     
  5. Apr 3, 2025 at 6:42 PM
    #5
    truckmike26

    truckmike26 New Member (2009)

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    Okay, so, what other fuel system tests/checks have you done?
     
  6. Apr 3, 2025 at 7:20 PM
    #6
    Hawaiian808

    Hawaiian808 [OP] Member

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    I checked if my fuel pump was turning on and it was and I check if I was getting power to my fuel pump and it is any other tests and checks that I need to do
     
  7. Apr 11, 2025 at 4:28 PM
    #7
    Hawaiian808

    Hawaiian808 [OP] Member

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    I checked fuel pressure and it good so what else I have to do
     
  8. Apr 11, 2025 at 6:14 PM
    #8
    soundman98

    soundman98 Well-Known Member

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    That would mean it's not getting fuel.

    If you've checked your fuel pump, filter, and verified fuel pressure at the fuel rail, and that the regulator isn't doing all pressure off the rail, then it's going to be an ecu or fuse issue because then ALL your injectors aren't firing. Either they're unplugged, or the ECU isn't powering up.
     

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