13 Inch late 2010 Erratic Fan Speeds

Discussion in 'MacBook Pro' started by Pilopew, Apr 28, 2013.

  1. Pilopew macrumors member

    Jan 11, 2009
    I've had this MBP for the past 3 years now, was running perfectly fine. The graphics card is dead, but I never game anyways, so that's not a problem (it's out of warranty, not paying 600€ for a new mobo). Anyways, I just came back from traveling somewhere (light travel, by train) and now my fans start spinning up wildly every 3 minutes or so, for no apparent reason. Temps are completely normal, no high CPU loads, nor traffic loads (see iStat screenshot). I don't get it, anyone know what's going on? Heres the screenshots:
    CPU may be running a bit hot at 54°, but no reason for 6k fan speeds, right?
    I haven't changed anything in my routine use or installed new software either.
    Reboot hasn't changed anything, though while the lid is closed, or account is logged off, no crazy fan speeds. Going to reboot under windows, see if I still get the same crazy fan stuff.
  2. andy9l macrumors 68000

    Aug 31, 2009
    England, UK
    My 2009 MBP idles at ~2k RPM, with 60-70º CPU…so it's definitely not normal! Mine spin up to ~4.5k when temps reach 90-100º until it cools down again, don't think I've ever seen them maxed at 6k.

    If you haven't already, try resetting your SMC whilst you're busy restarting and what-not! :)

    There's popular fan control apps on the net - smcFanControl is one example - so you could perhaps look into those as a temporary fix. Although it may not solve your problem since, for obvious reasons, it doesn't let you set a maximum fan speed.

    Hopefully someone with more technical knowledge will be able to help with a more permanent fix.
  3. Pilopew thread starter macrumors member

    Jan 11, 2009
    Well, I've booted under Windows, same problem.
    Also did an SMC reset, positive it was reset seeing magsafe light switched colors etc, still got crazy fans. I've got a hunch it may be caused by internet traffic, because I feel that as soon as I launch a browser, it's party time in there. But I'm not sure, requires further testing.

    Eagerly awaiting other suggestions, gonna look into smcfancontrol too
  4. Pilopew, Apr 29, 2013
    Last edited: Apr 29, 2013

    Pilopew thread starter macrumors member

    Jan 11, 2009
    Wow, I'm starting to get really bothered by these fans going haywire nonstop, temperatures aren't exceeding 56° Celsius. No-one else have any suggestions? Really considering just tearing them out, my patience is starting to run low.

    Eghh, I found the culprit. iStat Pro doesn't show you all the temps, however, Temperature Monitor does. And it found that pretty much each time I start browsing or do something semi-intensive, my Northbridge starts firing up to about 90° for peaks. I don't think any software can fix it.
    I-is my laptop dying guys? ;-;
  5. kaskone macrumors newbie

    Jun 22, 2009
  6. kaskone macrumors newbie

    Jun 22, 2009
    i have similar problem as you can see

    Attached Files:

  7. Pilopew thread starter macrumors member

    Jan 11, 2009
    To be honest, no, I haven't found any. I decided to ignore it, and the problem solved itself. Well, maybe it didn't solve itself, it just stopped doing it. Don't know why. Sorry I can't be of further assistance!

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