Okay to disable right fan and have left fan running at full speed?

Discussion in 'MacBook Pro' started by flarn2006, Jul 21, 2011.

  1. flarn2006, Jul 21, 2011
    Last edited: Jul 21, 2011

    flarn2006 macrumors newbie

    Joined:
    Jul 7, 2009
    #1
    I've been having a problem with my right fan being too noisy (I mean like a grinding noise), and right now I have the fans set up like this:

    Code:
    smc -k 'FS! ' -w 0003 #Manual speed mode for both fans
    smc -k 'F0Tg' -w 60e0 #Left fan set at 6200 rpm
    smc -k 'F1Tg' -w 0000 #Right fan set at 0 rpm (disabled)
    Is this okay? If it gets too hot, the system will do an emergency shutoff, right? (Then I can reset the SMC before starting it up again.) Right now, the CPU temperature is hovering around 60-70˚C after having it like that for a few minutes. And what about setting the left fan to automatic control? Would that be okay? Also, what about increasing the speed of the left fan above the factory-set maximum of 6200 rpm? Like maybe 7200?
     
  2. snaky69 macrumors 603

    Joined:
    Mar 14, 2008
    #2
    Why don't you simply buy a new right fan?
     
  3. flarn2006 thread starter macrumors newbie

    Joined:
    Jul 7, 2009
    #3
    Well, that's the plan. I have AppleCare coverage and I'm going to take it in, but this is just a temporary solution.
     
  4. Hansr macrumors 6502a

    Joined:
    Apr 1, 2007
    #4
    No this is not okay. Take it in as soon as possible.
     
  5. flarn2006 thread starter macrumors newbie

    Joined:
    Jul 7, 2009
    #5
    Okay, will do. Thanks.
     
  6. pooprscooper, Nov 30, 2011
    Last edited: Nov 30, 2011

    pooprscooper macrumors regular

    Joined:
    Aug 5, 2008
    #6
    Thanks for that info. I've been looking for a way to keep my fan speeds down for a couple years as I too have the grinding problem with my MBP fans. Rather than setting a manual fan speed, I let smc handle the fanspeed but limit it from going above 3k rpm with help from this http://hints.macworld.com/article.php?story=20110704054835249

    Here's what I use:

    type: "su" and enter root pass
    type: "cd /usr/local/sbin"
    type: "pico smcFanReset" and paste the following
    press ctrl+x then Y to save.
    type: "chmod +x smcFanReset" to make it an executable

    grab smc from smcFanControl and type
    type: "cp /Applications/smcFanControl.app/Contents/Resources/smc /usr/local/sbin"

    For anyone wondering how to set specific fan speeds with the OP code, take the desired fan speed and multiply it by four then convert to hex. For ex: 3000*4 = 12000 converted to hex = 2ee0



    [​IMG]
    To fix the fan grinding noise without having to buy a $30 fan you can simply grease it up using this guide(except, don't use wd-40, use real grease such as 3-in1): http://nofilmschool.com/2009/02/how-to-fix-a-noisy-macbook-pro-fan/
     

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