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Missing Transmission cooler.

Discussion in '3rd Gen. Tacomas (2016-2023)' started by Zingbot, Jun 11, 2020.

  1. Jun 16, 2020 at 4:40 AM
    #281
    chstaco

    chstaco Well-Known Member

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  2. Jun 16, 2020 at 5:12 AM
    #282
    TRD Ted

    TRD Ted Well-Known Member

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    If it was missed wouldn’t coolant be spraying everywhere when it was started?
     
    Skydvrr and FLA_Hoosier like this.
  3. Jun 16, 2020 at 6:28 AM
    #283
    REVNHI

    REVNHI Active Member

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    My 2020 double cab TRD OFF Road Premium (Cement) built 3/20 is also missing the auxiliary transmission cooler.
     
  4. Jun 16, 2020 at 6:30 AM
    #284
    ChrisIz

    ChrisIz Well-Known Member

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    I went out to check mine and I do have the cooler. It's a 3/20 build. (2020 SR5 DCSB 4x4)
     
  5. Jun 16, 2020 at 6:42 AM
    #285
    cop414

    cop414 Well-Known Member

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    And the plot thickens...:hattip:
     
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  6. Jun 16, 2020 at 6:50 AM
    #286
    Hook78

    Hook78 Well-Known Member

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    The other possibility brought up in this thread is that there was a mid-year upgrade to the radiator that includes a built in ATF cooler. I’m really interested to see if that’s the case, didn’t know that ever happened. I think there are 3-4 folks missing the cooler on a 2020 V-6 so the whole factory forgot to install possibility seems less likely statistically.
     
  7. Jun 16, 2020 at 7:13 AM
    #287
    Masterofnone

    Masterofnone 140.85

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    It would be very interesting to compare serial numbers!
     
  8. Jun 16, 2020 at 7:14 AM
    #288
    TenBeers

    TenBeers Well-Known Member

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    Yeah.
    This is my bet. Didn't the OP post pics with some lines going into the radiator?
     
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  9. Jun 16, 2020 at 7:25 AM
    #289
    tonered

    tonered bartheloni

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    A milkshake-possible rad would have me searching for a mod right off the bat.
     
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  10. Jun 16, 2020 at 7:27 AM
    #290
    Zingbot

    Zingbot [OP] Well-Known Member

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    I think they had a supplier issue. What are you going to do?
     
    Last edited: Jun 16, 2020
  11. Jun 16, 2020 at 7:28 AM
    #291
    Plain Jane Taco

    Plain Jane Taco Well-Known Member

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    ...and cats
     
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  12. Jun 16, 2020 at 7:30 AM
    #292
    dnlskier

    dnlskier Well-Known Member

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  13. Jun 16, 2020 at 7:34 AM
    #293
    Zingbot

    Zingbot [OP] Well-Known Member

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    Yes, it would be.
     
  14. Jun 16, 2020 at 7:38 AM
    #294
    BillsSR5

    BillsSR5 Looking out for #1

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    better file a complaint with Toyota Corp the life expectancy of your Transmission will be reduced 85%-90% not having a external trans cooler if you live in desert or hot climates, or better just trade the truck in before its too late.
     
    cosmicfires likes this.
  15. Jun 16, 2020 at 7:42 AM
    #295
    scotkw

    scotkw Well-Known Member

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    Seems some are confused as to what the additional trans cooler is. ALL AT Tacoma's have trans fluid running into the radiator, which is heated/cooled by the engine coolant. One's with the additional air trans coolers are them plumbed in series with the engine radiator. So trans fluid goes into the engine radiator to be cooled/heated, then is piped through the additional air cooler, then back to the trans. SO every Tacoma AT has a transmission cooler in the radiator. Most with tow package it seems should also have the additional air cooled trans cooler that should cool the fluid below engine temps before going back to the trans. This additional air cooler is what's missing.
     
  16. Jun 16, 2020 at 7:51 AM
    #296
    tonered

    tonered bartheloni

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    :hattip:

    Good info. My bad for the speculation.
     
  17. Jun 16, 2020 at 7:52 AM
    #297
    chstaco

    chstaco Well-Known Member

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    Thank you. :cheers: 15 pages and only a handful know what they're talking about much less bothered to pop the hood and trace the lines.
     
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  18. Jun 16, 2020 at 8:00 AM
    #298
    Masterofnone

    Masterofnone 140.85

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    The OP shouldn't have any problem with his transmission heating up under normal driving conditions
     
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  19. Jun 16, 2020 at 8:07 AM
    #299
    splitbolt

    splitbolt Voodoo Witch Doctor

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    You sure about the heating aspect?
    I thought heating of the atf occurs by way of the coolant hoses routed through the transmission thermostats oil heater; T.stat is not open when atf is cold.

    Some Toyota literature calls the "oil heater" attached to the thermostat, an "oil cooler".
     
    Skydvrr likes this.
  20. Jun 16, 2020 at 8:12 AM
    #300
    BillsSR5

    BillsSR5 Looking out for #1

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    who says that, and where is the evidence that says its standard on all 2020's all I see is hear say no hard documentation from Toyota corp.
     

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