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Need help with possible broken clutch fan (never turns off)

Discussion in '2nd Gen. Tacomas (2005-2015)' started by 05xr, Jun 5, 2011.

  1. Jun 5, 2011 at 10:47 PM
    #1
    05xr

    05xr [OP] Well-Known Member

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    I realized that my clutch fan never disengages. It is always on. I dont think I can ever remember a time when it hasnt been on.

    Are there any temp switches or possible easy fixes to look for that could be the cause of this? Or is it likely that it is the fluid/spring inside the clutch assembly?

    Any tips would be great. This may be a reason to go electric
     
  2. Jun 6, 2011 at 12:59 PM
    #2
    05xr

    05xr [OP] Well-Known Member

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    Someone has to have some pointers here
     
  3. Jun 6, 2011 at 1:03 PM
    #3
    BUZZCUT

    BUZZCUT Well-Known Member

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    Replace is the only fix.
     
  4. Jun 6, 2011 at 1:04 PM
    #4
    mjohn617

    mjohn617 Well-Known Member

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    Isn't the clutch centrifugal?


    EDIT:
    I'm taking a shot in the dark because I have never really looked at my specific fan but I don't believe it should disengage or stop untill the engine stops....it works on centrifugal force. I think you should be worried if your fan doesn't engage on an engine start.
     
  5. Jun 6, 2011 at 1:13 PM
    #5
    emtlibby

    emtlibby Slaughtering goats

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    yeah, it's supposed to always spin.
     
  6. Jun 6, 2011 at 1:17 PM
    #6
    JKD

    JKD Well-Known Member

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    More likely it is thermostatically controlled.
     
  7. Jun 6, 2011 at 1:23 PM
    #7
    mjohn617

    mjohn617 Well-Known Member

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    Aaahh shit! It's a throwdown...

    If you do decide to replace it, send the old one my way;)
     
  8. Jun 6, 2011 at 1:25 PM
    #8
    BlueT

    BlueT Well-Known Member

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    I moded 1999 Taco so much it had turned to Land Cruiser
    x2 (if it is stuck , it means fluid had leaked out and you had lock up the clutches inside)

    Otherwise there would be a way to fix it by replacing fluid with fresh one which is $5 repair. Fluid can be bought from Hobby store. ;)
     
  9. Jun 6, 2011 at 1:27 PM
    #9
    BlueT

    BlueT Well-Known Member

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    I moded 1999 Taco so much it had turned to Land Cruiser
    With engine cold and stopped can you rotate fan by hand?
     
  10. Jun 6, 2011 at 1:30 PM
    #10
    mjohn617

    mjohn617 Well-Known Member

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    There is liquid inside? That is my lesson for today...I have been working on cars for almost 10 years now and never knew that!!
     
  11. Jun 6, 2011 at 1:35 PM
    #11
    2008taco

    2008taco Well-Known Member

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    Can you turn the fan by hand while the engine is off? If so there is nothing wrong, the fan is supposed to spin all the time, as the engine warms up it spins faster.
     
  12. Jun 6, 2011 at 1:40 PM
    #12
    YFZ_TRD

    YFZ_TRD 4Runner Pilot

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    Mine spins all the time when I'm looking under the hood. Once the idle slows down in the morning it doesn't speed up with the engine. Otherwise you would hear it.
     
  13. Jun 6, 2011 at 1:45 PM
    #13
    BlueT

    BlueT Well-Known Member

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    I moded 1999 Taco so much it had turned to Land Cruiser
    Yep. There is gear oil (one used in RC car transmissions) there are also cluthpacks. When engine is cold fan should give almost no resistance but when engine warms up clutchpacks lock it and fan spins fast with the engine RPMS. Transition is smooth because whole process is tight u p to temp of air coming from radiator.
    Reason for design is to have non intrusive temp control and if you plow car into the water, fan cools instantly and allows for engine to run with out breaking the fan apart.
    Different fans have different density of oil in the clutchpacks. Pink ones should be tow package with highest weight oil to provide more air flow.
    Speed of the fan (more or less of cooling) can be changed by replacing fluid with different weight one. So non pink Clutch pack can work as pink if you put correct weight of fluid. :proposetoast:

    Edit so for those of you who off road in Hot climate it would be beneficial to replace fluid with higher weight to get extra cooling at lower RPMS.
     
  14. Jun 6, 2011 at 1:50 PM
    #14
    wlmuncy

    wlmuncy Well-Known Member

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    Mine is pink with no tow package, is there some standard to this?
     
  15. Jun 6, 2011 at 1:55 PM
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    mjohn617

    mjohn617 Well-Known Member

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    Ive got the STI pink also...interesting, I never even had a question before this.

    Thanks again BlueT...

    +Rep for you
     
  16. Jun 6, 2011 at 2:03 PM
    #16
    BlueT

    BlueT Well-Known Member

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    I moded 1999 Taco so much it had turned to Land Cruiser
    maybe Toyota decided to give you stronger one bacause you are in South (hotter)

    BTW: Here is great write up how to do it. Its for Land Cruiser but it applies to our trucks

    http://forum.ih8mud.com/79-95-toyota-truck-tech/167678-fan-clutch-service.html
    No need to pay $$$$ for new clutch every time cooling gets worst :D
     
  17. Jun 6, 2011 at 2:06 PM
    #17
    BlueT

    BlueT Well-Known Member

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    I moded 1999 Taco so much it had turned to Land Cruiser
    THX
    :D
     
  18. Jun 6, 2011 at 5:43 PM
    #18
    05xr

    05xr [OP] Well-Known Member

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    Yes it spins freely without the motor on. But, I have never seen a day when this thing is still. So you are saying this is normal?

    I have the Pink connector also. There is no temp control switch or anything?
     
  19. Jun 7, 2011 at 12:00 AM
    #19
    wlmuncy

    wlmuncy Well-Known Member

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    I have only see electric one's cut off and on. Every car I have had with a mechanical/clutch fan spin the entire time the vehicle is running.
     
  20. Jun 7, 2011 at 2:07 AM
    #20
    2008taco

    2008taco Well-Known Member

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    If the engine is running the fan should be as well. The only fans that don't run 100% of the time when the engine is running are electrics.
     
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