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knock sensor for my 04 2RZFE

Discussion in '1st Gen. Tacomas (1995-2004)' started by choopes, Jul 2, 2025.

  1. Jul 2, 2025 at 4:13 AM
    #1
    choopes

    choopes [OP] Well-Known Member

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    I need to replace my knock sensor. They are crazy expensive, at least what I can find. What is a good source?
     
  2. Jul 2, 2025 at 12:44 PM
    #2
    Glamisman

    Glamisman Well-Known Member

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    It needs to be replaced why?

    Inexpensive parts on Toyotas cause more problems than they fix, especially when it comes to engine electronics.
     
  3. Jul 4, 2025 at 8:27 AM
    #3
    t0p_d0g

    t0p_d0g 私はタコマが大好きです

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  4. Jul 4, 2025 at 11:30 AM
    #4
    choopes

    choopes [OP] Well-Known Member

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  5. Jul 4, 2025 at 1:31 PM
    #5
    t0p_d0g

    t0p_d0g 私はタコマが大好きです

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    What code are you getting? I’m not real familiar with the 2RZFE but a quick search indicates one knock sensor.

    Have you checked your wiring for rodent damage?
     
  6. Jul 5, 2025 at 2:57 PM
    #6
    choopes

    choopes [OP] Well-Known Member

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    The wiring is good. The only code is PO325 knock sensor.
     
  7. Jul 5, 2025 at 3:13 PM
    #7
    t0p_d0g

    t0p_d0g 私はタコマが大好きです

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    I don’t know why Toyota is showing two knock sensors.

    Everything I have read says it’s located under the intake manifold.
     
    Last edited: Jul 5, 2025 at 3:20 PM
  8. Jul 6, 2025 at 1:08 PM
    #8
    choopes

    choopes [OP] Well-Known Member

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    I could be wrong on that.
    What about coolant temp sending unit. Is there one, or 2? I am awhear of one on the head against the firewall, but is there another?
     
  9. Jul 6, 2025 at 5:42 PM
    #9
    Dirty Dude

    Dirty Dude Well-Known Member

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    Dirt, miles, and wear.
    There's one for the EFI (sensor) and one for the temperature gauge (sending unit). I think the one for the gauge is in the thermostat housing.
     
  10. Jul 6, 2025 at 8:21 PM
    #10
    t0p_d0g

    t0p_d0g 私はタコマが大好きです

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