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2004 Toyota Tacoma misfire help

Discussion in '1st Gen. Tacomas (1995-2004)' started by bluetoyotapickup, Jul 23, 2025.

  1. Jul 23, 2025 at 12:44 PM
    #1
    bluetoyotapickup

    #1
    bluetoyotapickup [OP] New Member

    Joined:
    Jul 23, 2025
    Member:
    #474643
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    Howzit it going, I’ve got a 2004 Toyota Tacoma with the 3.4 v6 4wd. Only one cylinder is getting spark* Tested the spark plugs and ignition coils. They were all good. Does anyone know where I would look to find the relays and fuses? Maybe a wiring diagram so I could test for voltage too. Much appreciated
     
    Last edited: Jul 23, 2025
    bluetoyotapickup, Jul 23, 2025
    #1
  2. Jul 23, 2025 at 12:51 PM
    #2
    Andy01DblCabTacoma

    #2
    Andy01DblCabTacoma Well-Known Member

    Joined:
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    First Name:
    Andy
    San Diego, CA
    Vehicle:
    01 Double Cab v6 4x4 TRD
    F: Kings SPC, R: 5100s+J59s. Custom armor.
    How do you know that only one cylinder is firing?

    Did you look for the fuse block? There are two of them, and they are extremely easy to find. One is right next to the battery, and the other in the cab below the steering wheel.

    .... but... if any cylinder is firing, it's probably not a fuse.

    You can find full wiring diagrams in the Factory Service Manual- a digital pdf download can be found 2001-2004 Tacoma Factory Service Manual in this sticky thread.
     
    Andy01DblCabTacoma, Jul 23, 2025
    #2
    HondaGM likes this.
  3. Jul 23, 2025 at 1:47 PM
    #3
    bluetoyotapickup

    #3
    bluetoyotapickup [OP] New Member

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    Sorry, I meant to say only one cylinder is getting spark.
     
    bluetoyotapickup, Jul 23, 2025
    #3
    HondaGM likes this.
  4. Jul 23, 2025 at 2:02 PM
    #4
    HondaGM

    #4
    HondaGM Call sign Monke

    Joined:
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    First Name:
    James
    South-Pole, Alabama
    Vehicle:
    2023 access cab V6
    Welcome to TW...
     
    HondaGM, Jul 23, 2025
    #4

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