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Please help coolant leak

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Slazz29, Dec 11, 2019.

  1. Dec 11, 2019 at 6:04 AM
    #1
    Slazz29

    #1
    Slazz29 [OP] Well-Known Member

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    Ok so my 2007 taco 4.0 has 227,000 on it and runs great but last night I looked under it and seen signs I have a coolant leak. I didnt get a good look because it was dark but it us leaking on some block looking thing. I dont think it's the water pump tho. This thing is above the fan and goes into the block. Looks like it is leaking out of a bad gasket where they go together? Any advice? The water pump wouldnt leak coolant above the fan would it?
     
    Slazz29, Dec 11, 2019
    #1
  2. Dec 11, 2019 at 6:09 AM
    #2
    TheDevilYouLove

    #2
    TheDevilYouLove You can’t polish a turd, but you can polish a TRD

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    Probably thermostat leaking. Easy fix if so.
     
    TheDevilYouLove, Dec 11, 2019
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  3. Dec 11, 2019 at 6:20 AM
    #3
    Muddinfun

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    Muddinfun Well-Known Member

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    Muddinfun, Dec 11, 2019
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  4. Dec 11, 2019 at 6:21 AM
    #4
    TheDevilYouLove

    #4
    TheDevilYouLove You can’t polish a turd, but you can polish a TRD

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    Pics would be helpful
     
    TheDevilYouLove, Dec 11, 2019
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  5. Dec 11, 2019 at 6:31 AM
    #5
    Fullboogie

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    Fullboogie Well-Known Member

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    Don't need pics, man. He said block looking thingy. Geez.
     
    Fullboogie, Dec 11, 2019
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  6. Dec 11, 2019 at 6:40 AM
    #6
    Lester Lugnut

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    Lester Lugnut Well-Known Member

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    From my experience, unless the source of the leak is obvious, it might help to clean off the engine and I mean really clean it; then start looking for the origin of the leak.
     
    Lester Lugnut, Dec 11, 2019
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  7. Dec 11, 2019 at 7:38 AM
    #7
    Slazz29

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    Slazz29 [OP] Well-Known Member

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    I'll check it out after work today. Ya I was thinking maybe the thermostat housing but I wasnt sure if that was it or not? Is the housing right above the fan on the block?
     
    Slazz29, Dec 11, 2019
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  8. Dec 11, 2019 at 8:43 AM
    #8
    Slazz29

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    Slazz29 [OP] Well-Known Member

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    Ok sorry about the horrible pic but here is where its leaking. Is this the thermostat housing? Black thing you can see where its wet on the left bottom

    20191211_113429.jpg
     
    Slazz29, Dec 11, 2019
    #8
  9. Dec 11, 2019 at 8:53 AM
    #9
    Slazz29

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    Slazz29 [OP] Well-Known Member

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    This is what is leaking at the mating surface. There is a gasket in there right? And that is the thermostat housing?

    20191211_115203.jpg
     
    Slazz29, Dec 11, 2019
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  10. Dec 11, 2019 at 9:00 AM
    #10
    IL Capo

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    IL Capo Well-Known Member

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    Correct on both counts....are you having any thermostat issues? or is it just a leak? might want to think about (consider) replacing the thermostat if you're having to replace the gasket...
    What are your thoughts?
     
    IL Capo, Dec 11, 2019
    #10
  11. Dec 11, 2019 at 9:06 AM
    #11
    n8dogg675

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    n8dogg675 Well-Known Member

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    n8dogg675, Dec 11, 2019
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  12. Dec 11, 2019 at 9:08 AM
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    Slazz29

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    Slazz29 [OP] Well-Known Member

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    They have a kit at autozone for 40 dollars thermostat, cover, gasket and seals. I'll replace it all after work
     
    Slazz29, Dec 11, 2019
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  13. Dec 11, 2019 at 9:08 AM
    #13
    Slazz29

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    Slazz29 [OP] Well-Known Member

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    Thanks for the help everyone!
     
    Slazz29, Dec 11, 2019
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  14. Dec 11, 2019 at 10:05 AM
    #14
    TheDevilYouLove

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    TheDevilYouLove You can’t polish a turd, but you can polish a TRD

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    TheDevilYouLove, Dec 11, 2019
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  15. Dec 11, 2019 at 10:16 AM
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    Toy4me

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    Toy4me Well-Known Member

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    Judging from the pic I’d replace the nuts too. They look pretty crusty. Hope they come off for you. If it’s a slow leak maybe soak them good with some penetrant first and let them sit a day. No reason to make your life harder.
     
    Toy4me, Dec 11, 2019
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  16. Dec 11, 2019 at 10:41 AM
    #16
    n8dogg675

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    n8dogg675 Well-Known Member

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    Here is the thermostat inspection and install instructions from the FSM. Gives the torque specs.
     

    Attached Files:

    n8dogg675, Dec 11, 2019
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  17. Dec 11, 2019 at 10:44 AM
    #17
    n8dogg675

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    n8dogg675 Well-Known Member

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    OEM Toyota part number for the nuts as well 94151-80600 times 3
     
    n8dogg675, Dec 11, 2019
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  18. Dec 11, 2019 at 10:46 AM
    #18
    IL Capo

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    IL Capo Well-Known Member

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    Great info to have - keep it coming!
     
    IL Capo, Dec 11, 2019
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