MacBook Pro fan won't stop, help!

Discussion in 'MacBook Pro' started by transistor, May 3, 2007.

  1. transistor macrumors member

    Joined:
    Jul 2, 2002
    Location:
    Mexico
    #1
    I did the battery update a few days ago, today, after the latest Quicktime and Airport updates, the fan of my MacBook Pro C2D won't stop.

    However, I removed the battery and the fan stopped. Weird :confused:
    So, anyone with same issue or know anything about this floating around the intrawebs?

    MacBook Pro C2D 15", 2.16 Ghz, 1GB RAM, Mac OS X 10.4.9.
     
  2. cmccarten macrumors member

    Joined:
    Sep 29, 2006
    #2
    try downloading smcfancontrol and see if adjusting the fan speeds manually will sort of "reset" the problem.
     
  3. pianoman macrumors 68000

    pianoman

    Joined:
    May 31, 2006
    #3
    what happens when you put the battery back? how about another restart? do you have any fan control programs installed (smc or the fan control System Preferences pane)?
     
  4. transistor thread starter macrumors member

    Joined:
    Jul 2, 2002
    Location:
    Mexico
    #4
    No SMC or Fan Control installed.
    I tried restarting, but after restart the fan keeps going.
    If I put the battery back in, the fan starts working and the battery is not even warm. Ater pulling the battery out, the fan stops working after a while.
    I'll try that SMC Fan Control and see if it can help, thanks.
     
  5. deadpixels macrumors 6502a

    deadpixels

    Joined:
    Oct 30, 2006
    #5
    at what speed? are they faster now? mine always run at 2000. before and after the update, i updated yesterday, noticed nothing different.
     
  6. mad jew Moderator emeritus

    mad jew

    Joined:
    Apr 3, 2004
    Location:
    Adelaide, Australia
    #6
    If the fan spinning is excessive then try a SMC reset. Try this before the SMC controller thingo because I'm pretty sure this'll remove the controller.
     
  7. transistor thread starter macrumors member

    Joined:
    Jul 2, 2002
    Location:
    Mexico
    #7
    Without the battery, they're running at 2000 rpm and the temperature is 62 C (142 F).
    After plugging the battery in, the temperature starts to rise.
    After a while, the temperature rises to 68 C (156 F) and the fans are running at 5111 rmp!
    I don't think it is a significant temperature chango to justify the fans, but I really wouldn't know.
    I do know that the fans didn't behave like this, just yesterday.
     
  8. transistor thread starter macrumors member

    Joined:
    Jul 2, 2002
    Location:
    Mexico
    #8
    I'll try the SMC reset and report back, thanks!
     
  9. itsallinurhead macrumors 6502

    itsallinurhead

    Joined:
    Apr 23, 2007
    Location:
    Southern California
    #9
    Mine has the same problem, however, my temperatures hovers around 170 F at idle and the fans spin at around 4000 RPM. If I remove the battery it returns to normal. I am beginning to think there is something wrong with the power controller in my laptop. I had one power adapter melt through the plastic near the mag-safe and a battery become swollen. .:mad:
     
  10. transistor thread starter macrumors member

    Joined:
    Jul 2, 2002
    Location:
    Mexico
    #10
    SMC reset didn't fix the problem, but the fans are running a bit slower (I can still hear them) 4490 rpm when idle.
    I think itsallinurhead might be right and we have some defective something... maybe the update was just a coincidence, I don't know.
     
  11. itsallinurhead macrumors 6502

    itsallinurhead

    Joined:
    Apr 23, 2007
    Location:
    Southern California
    #11
    Mine actually began doing it about a week prior to the update. I was hoping the update would cure the problem, but that is a no go. Off my MBP goes to Apple as soon as finals are over. :mad:
     
  12. mad jew Moderator emeritus

    mad jew

    Joined:
    Apr 3, 2004
    Location:
    Adelaide, Australia
    #12
    itsallinurhead could well be right. Nevertheless, try a PRAM reset too. :)
     
  13. itsallinurhead macrumors 6502

    itsallinurhead

    Joined:
    Apr 23, 2007
    Location:
    Southern California
    #13

    Tired to reset the pram and the smc. no go. :mad:
     
  14. Larkin macrumors newbie

    Joined:
    Feb 16, 2009
    #14
    The fan on my mbp was spinning at 5000 rpm idle, I unplugged the power lead waited a few seconds and the fan went back to normal 2000 rpm idle, I plugged the power lead back in and the fans did not increase, maybe taking out the power lead resets something.
     
  15. DebHolt macrumors newbie

    Joined:
    Nov 15, 2008
    #15
    Check the print jobs

    Macbook fans will sometimes run constantly if there is a print job waiting for a printer that is off line.
     
  16. runebinder macrumors 6502a

    runebinder

    Joined:
    Apr 2, 2009
    Location:
    Nottingham, UK
    #16
    Have you tried running the Apple Hardware test? Mine had same issue, rant test and it gave an error which showed the thermal sensors had gone kaput on the logic board
     

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