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Diagram of coolant hose routing?

Discussion in '1st Gen. Tacomas (1995-2004)' started by CitizenSnips5, May 4, 2022.

  1. May 4, 2022 at 7:02 PM
    #1
    CitizenSnips5

    CitizenSnips5 [OP] Well-Known Member

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    I'm looking for a diagram or some sort of visual for all coolant lines/hoses that run through a 3RZ-FE. I have a coolant leak somewhere behind the engine above the transmission and it's incredibly difficult to see back there, so I'm hoping for anything that can help me diagnose the correct hose.
     
  2. May 4, 2022 at 7:17 PM
    #2
    Bivouac

    Bivouac Well-Known Member

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    Northern Lehigh Valley Pa
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    2000 Tacoma 5 speed 3.4
    Remains to be seen I bought the tires and wheels the rest came along
    Don`t forget your freeze plugs!

    heater hoses ?

    Just where does the coolant run down the side of the transmission?
     
  3. May 4, 2022 at 7:27 PM
    #3
    O'Silver_Taco

    O'Silver_Taco Well-Known Member

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    Here's a pic of the back........you can clearly see the hose off the thermostat that goes into the heat core.
    And then the return that goes into back of engine at the ect......

    What's hard to see is the small hose off the thermo has tee/hose that sends water up and thru the throttle body......

    MotorFlywheelclutch.jpg
     
    Bivouac and CitizenSnips5[OP] like this.
  4. May 4, 2022 at 7:31 PM
    #4
    O'Silver_Taco

    O'Silver_Taco Well-Known Member

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  5. May 4, 2022 at 7:36 PM
    #5
    CitizenSnips5

    CitizenSnips5 [OP] Well-Known Member

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    Thanks for those pics, I'll do some digging tomorrow with those as a reference!

    Here's a video best I could grab of the leak, taken from the passenger side looking down onto the top of the bell housing.

     
  6. May 4, 2022 at 7:54 PM
    #6
    O'Silver_Taco

    O'Silver_Taco Well-Known Member

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    Wouldnt hurt to replace that ect.
    I've seen those with the sensor tip completely exploded.
    Hot water destroys everything....eventually.

    If that doesn't yield anything.....I would do the UV dye.
    Amazon has those on the cheap......just need the water base dye.....glases/uv lite.
     

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