Macbook Pro Fans Running At High Speed

My MBP 17" CoreDuo 2.16ghz came back from having the Logic Board replaced at the weekend. All is well except that now the fans run at high speed all the time.
I have installed SMCFanControl, and the current readings are 45 / 113 degrees and the fans are running at 5500 rpm. I took the machine back to the Apple store but when I was there the fans didn't go above 3000rpm (typical huh?). It's nice that the case is now a lot cooler than it used to be but the fans seem very loud to me.
The question is, is this normal? I am not running anything very heavy duty at the moment. Any ideas?
Thanks
Matt

I tend to agree with Ned on SMC fan control (that it arguably causes more problems than it solves).
I had a similar problem with mine recently having the fans run constantly and at full speed. My temperatures never approached yours, but it would fail to go to sleep etc.
I would start with the advice Ned gave you. This is the same path Apple Care led me down in trying to resolve the issue.
Ultimately though I had to do an archival install of the operating system. It is non-destructive so it wasn't a big deal. I just had to slowly re-install patches and observe behavior. Oddly I was able to patch back up to 10.4.9 without the issue re-occuring so the root cause is still a mystery to me.
edit
Patch gone bad maybe? I tried re-applying the 10.4.9 combo before attempting the archival install route with no success. I know that has been suggested many times. Apparenty it solves many issues, but it failed to solve mine.

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Macbook Pro fan running at high speed but is not experiencing heavy usage

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The fan runs if something is overheating or if a sensor has failed or there is a problem with the SMC. So, reset the SMC - Intel-based Macs: Resetting the System Management Controller (SMC). If that does not stop the fan from running then check for a runaway application:
Open Activity Monitor in the Utilities folder. Select All Processes from the Processes dropdown menu. Click twice on the CPU% column header to display in descending order. If you find a process using a large amount of CPU time (>=70,) then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps. Be sure to note the name of the runaway process so you can track down the cause of the problem.
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I recently picked up a 17" 2009 unibody MacBook Pro with Intel Core 2 Duo 2.8ghz, 4gb RAM, SuperDrive and a Samsung 1TB hard drive. The system did not come with the original hard drive and I don't have any other hard drives to test and verify that the new larger hard drive is the cause. I have tried a clean install of Snow Leopard, Lion and even Mountain Lion but no matter what my fans always running at max speed (5k+ RPM). I have looked at iStat and the temps of any of the components in the machine never show more than 42*C so the fans should never be running at full blast. Oddly enough smcFanControl shows 0* temp but fan speds for both left and right are always 5.5k+ and very noisy. Using HDD Fan Control I am able to get at least the right fan to run at a controlable speed but its silence is drowned out by the left fan that still runs on full blast. I have already done multiple SMC resets and PRAM resets with no change in the condition. These noisey fans are driving me insane! I have run every available update as well. Is there a chance that the hard drive or something elses temp not being supported or detectable by OSX is causing the fans to default to the fail safe constant high speed?!

rriggin wrote:
I will have to try that when I get can find the original discs because I have been unable to boot into the diagnostic utility with my Snow Leopard, Lion, or Mountain Lion discs. More than likely I am thinking a sensor failure because even booting into Ubuntu Live USB thumbdrive the fans still run at max.
Well your just a regular pirate. There is no Mountain Lion disks, it's not even out of Beta and avaialble to the public yet
We thought you were just mistaken but now your tech handy enough to boot a Mac off a Linux live USB, so that means you've been bad and downloaded MT Lion off a P2P network or something.
If your beta testing 10.8 your bound to secrecy and not allowed to be discussing it and posting this sort of question on this forum, but the other one.
If you know anything, OS X must "talk" to the hardware or else the default setting is to race the fans. Linux doesn't do this by default as it's designed for generic PC's which a Mac may appear to be one it's not really. Apple only supports OS X and Windows 7 on Mac's, not Linux.
Obviously something on your machine is SEVERLY messed up in hardware, likely a dead sensor, you bought a used lemon that someone didn't want to pay to get fixed.
Want to try Linux?, read this

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Ok, So now i'm pretty sick of the fan noise.
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Macbook pro fan running fast and high cpu usage

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Hey emilyiow,
Thanks for the question. I understand that you are experiencing issues with your MacBook Pro in relation to the fans. Sometimes, this symptom can indicate that the SMC needs to be reset. For more information and instructions on how to do so, check out this resource:
Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support
http://support.apple.com/en-us/ht3964
After performing normal troubleshooting, these symptoms may indicate that an SMC reset could be necessary.
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- The computer's fans run at high speed although the computer is not experiencing heavy usage and is properly ventilated.
Additional information:
Using Apple Hardware Test - Apple Support
http://support.apple.com/en-us/HT201257
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Confirm that the power adapter is connected if you're using a Mac notebook.
Confirm that all external devices are disconnected from your computer.
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Hey emilyiow,
Thanks for the question. I understand that you are experiencing issues with your MacBook Pro in relation to the fans. Sometimes, this symptom can indicate that the SMC needs to be reset. For more information and instructions on how to do so, check out this resource:
Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support
http://support.apple.com/en-us/ht3964
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Record any error code given so that you can give the information to a Mac Genius, Apple Authorized Service Provider, or Apple Technical Support Specialist.
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Backup your files before doing anything. May be a dying hard drive, would account for slowness. Software update fully.
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https://support.apple.com/kb/ht1509
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The computer's fans run at high speed although the computer is not experiencing heavy usage and is properly ventilated.
Follow these instructions again
https://support.apple.com/kb/HT3964
Next try a Safe Mode boot holding Shift key see if it continues.
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https://discussions.apple.com/message/16276201#16276201
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http://flashbuilder.eu/flash-player-version.html
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See Below.
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I wrote from Turkey.
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It seems you are experiencing an issue with displays and their resolutions. The following article provides troubleshooting guidance which may help you find a solution:
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Problem description:
iMac 5K
The computer is running unusually slowly although it is not experiencing high CPU utilization.
The computer's fans run at high speed although the computer is not experiencing heavy usage.
Apple Diagnostics points to SMC problem.
SMC and PRAM resets have not worked.
See Etre Report below.
Thanks for help.
Herbie49
EtreCheck version: 2.1.8 (121)
Report generated 30. März 2015 07:32:40 MESZ
Download EtreCheck from http://etresoft.com/etrecheck
Hardware Information: ℹ️
    iMac (Retina 5K, 27-inch, Late 2014) (Technical Specifications)
    iMac - model: iMac15,1
    1 4 GHz Intel Core i7 CPU: 4-core
    32 GB RAM Upgradeable
        BANK 0/DIMM0
            8 GB DDR3 1600 MHz ok
        BANK 1/DIMM0
            8 GB DDR3 1600 MHz ok
        BANK 0/DIMM1
            8 GB DDR3 1600 MHz ok
        BANK 1/DIMM1
            8 GB DDR3 1600 MHz ok
    Bluetooth: Good - Handoff/Airdrop2 supported
    Wireless: en1: 802.11 a/b/g/n/ac
Video Information: ℹ️
    AMD Radeon R9 M295X - VRAM: 4096 MB
        iMac spdisplays_5120x2880Retina
System Software: ℹ️
    OS X 10.10.2 (14C1514) - Time since boot: 0:31:53
Disk Information: ℹ️
    APPLE SSD SM0512F disk1 : (500,28 GB)
        EFI (disk1s1) <not mounted> : 210 MB
        Macintosh SSHD (disk1s2) / : 499.42 GB (251.32 GB free)
        Recovery HD (disk1s3) <not mounted> [Recovery]: 650 MB
    Samsung SSD 840 EVO 750GB disk0 : (750,16 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Herbies Daten (disk0s2) /Volumes/Herbies Daten : 749.30 GB (299.14 GB free)
        Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
USB Information: ℹ️
    Apple Inc. BRCM20702 Hub
        Apple Inc. Bluetooth USB Host Controller
    Apple Inc. FaceTime HD Camera (Built-in)
    Apple, Inc. Keyboard Hub
        Apple Inc. Apple Keyboard
Thunderbolt Information: ℹ️
    Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
    Anywhere
Kernel Extensions: ℹ️
        /Applications/Toast 11 Titanium/Spin Doctor.app
    [not loaded]    com.hzsystems.terminus.driver (4) [Click for support]
        /Library/Application Support/Symantec/AntiVirus
    [not loaded]    com.symantec.kext.SymAPComm (11.1.2f18) [Click for support]
        /System/Library/Extensions
    [not loaded]    com.Logitech.Control Center.HID Driver (2.4.0) [Click for support]
    [not loaded]    com.symantec.kext.internetSecurity (1.3.2f5) [Click for support]
    [not loaded]    com.symantec.kext.ips (3.2f8) [Click for support]
        /Users/[redacted]/Library/Services/ToastIt.service/Contents/MacOS
    [not loaded]    com.roxio.TDIXController (2.0) [Click for support]
Startup Items: ℹ️
    ProTec6b: Path: /Library/StartupItems/ProTec6b
    Startup items are obsolete in OS X Yosemite
Launch Agents: ℹ️
    [not loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]
    [loaded]    com.adobe.CS5ServiceManager.plist [Click for support]
    [running]    com.symantec.uiagent.application.plist [Click for support]
    [not loaded]    com.teamviewer.teamviewer.plist [Click for support]
    [not loaded]    com.teamviewer.teamviewer_desktop.plist [Click for support]
Launch Daemons: ℹ️
    [loaded]    com.adobe.fpsaud.plist [Click for support]
    [loaded]    com.adobe.SwitchBoard.plist [Click for support]
    [loaded]    com.bombich.ccc.plist [Click for support]
    [loaded]    com.microsoft.office.licensing.helper.plist [Click for support]
    [loaded]    com.symantec.avscandaemon.plist [Click for support]
    [running]    com.symantec.diskMountNotify.plist [Click for support]
    [failed]    com.symantec.MissedTasks.plist [Click for support]
    [loaded]    com.symantec.navapd.plist [Click for support]
    [loaded]    com.symantec.navapdaemonsl.plist [Click for support]
    [loaded]    com.symantec.Sched503-1.plist [Click for support]
    [loaded]    com.symantec.Sched505-3.plist [Click for support]
    [running]    com.symantec.sharedsettings.plist [Click for support]
    [running]    com.symantec.symdaemon.plist [Click for support]
    [failed]    com.symantec.symSchedDaemon.plist [Click for support]
    [not loaded]    com.teamviewer.teamviewer_service.plist [Click for support]
    [loaded]    de.meilenstein.MSTFirstRunInstaller.plist [Click for support]
User Launch Agents: ℹ️
    [loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]
    [loaded]    com.adobe.ARM.[...].plist [Click for support]
    [failed]    com.adobe.ARM.[...].plist [Click for support] [Click for details]
    [loaded]    com.adobe.ARM.[...].plist [Click for support]
    [loaded]    com.google.keystone.agent.plist [Click for support]
    [loaded]    de.starface.STARFACE-Client.plist [Click for support]
    [running]    ws.agile.1PasswordAgent.plist [Click for support]
User Login Items: ℹ️
    Notizzettel    Programm Hidden (/Applications/Stickies.app)
    Adobe Reader    Programm (/Applications/Adobe Reader.app)
    Dropbox    Programm (/Applications/Dropbox.app)
    SpyderUtility    Programm (/Applications/Datacolor/Spyder4Pro/Support/SpyderUtility.app)
    PopChar    Programm (/Applications/PopChar.app)
    STARFACE Client    Programm (/Users/[redacted]/Desktop/STARFACE Client.app)
Internet Plug-ins: ℹ️
    Google Earth Web Plug-in: Version: 7.0 [Click for support]
    Default Browser: Version: 600 - SDK 10.10
    AdobeExManDetect: Version: AdobeExManDetect 1.1.0.0 - SDK 10.7 [Click for support]
    Flip4Mac WMV Plugin: Version: 3.2.0.16   - SDK 10.8 [Click for support]
    OfficeLiveBrowserPlugin: Version: 12.2.8 [Click for support]
    AdobePDFViewerNPAPI: Version: 10.1.5 [Click for support]
    FlashPlayer-10.6: Version: 17.0.0.134 - SDK 10.6 [Click for support]
    Silverlight: Version: 5.1.10411.0 - SDK 10.6 [Click for support]
    Flash Player: Version: 17.0.0.134 - SDK 10.6 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    iPhotoPhotocast: Version: 7.0
    SharePointBrowserPlugin: Version: 14.4.8 - SDK 10.6 [Click for support]
    AdobePDFViewer: Version: 10.1.5 [Click for support]
    JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
User internet Plug-ins: ℹ️
    RealPlayer Plugin: Version: Unknown
Safari Extensions: ℹ️
    1Password
    ExifExt
Audio Plug-ins: ℹ️
    DVCPROHDAudio: Version: 1.2
3rd Party Preference Panes: ℹ️
    Flash Player [Click for support]
    Flip4Mac WMV [Click for support]
    Growl [Click for support]
    Norton\nQuickMenu [Click for support]
Time Machine: ℹ️
    Skip System Files: NO
    Mobile backups: OFF
    Auto backup: YES
    Volumes being backed up:
        Macintosh SSHD: Disk size: 499.42 GB Disk used: 248.10 GB
    Destinations:
        Backups [Network]
        Total size: 6.00 TB
        Total number of backups: 39
        Oldest backup: 2015-01-31 05:27:48 +0000
        Last backup: 2015-03-27 20:28:54 +0000
        Size of backup disk: Excellent
            Backup size 6.00 TB > (Disk size 499.42 GB X 3)
Top Processes by CPU: ℹ️
         5%    WindowServer
         0%    Dropbox
         0%    SymDaemon
Top Processes by Memory: ℹ️
    241 MB    Mail
    206 MB    Finder
    172 MB    Safari
    137 MB    Stickies
    137 MB    WindowServer
Virtual Memory Information: ℹ️
    29.20 GB    Free RAM
    2.79 GB    Active RAM
    721 MB    Inactive RAM
    1.64 GB    Wired RAM
    1.34 GB    Page-ins
    0 B    Page-outs
Diagnostics Information: ℹ️
    Mar 30, 2015, 06:58:02 AM    /Library/Logs/DiagnosticReports/deleted_2015-03-30-065802_[redacted].crash
    Mar 30, 2015, 06:55:24 AM    Self test - passed

First uninstall your antivirus. Use only a vendor-provided uninstaller or uninstallation instructions. Never remove files by hand. Never use an "app zapper".
If that doesn't fix it, take it back to Apple for service.

Fan running at high speed (iMac 2011)

I'm using an iMac mid-2011 model, 21.5". For the past few weeks, I'm facing an issue where the fan runs at high speed (>3900 rpm). This generally happens when I use the mac for more than an hour with simple tasks like browsing, checking mails, working on word / powerpoint, etc. If I play a game or watch a video, it happens faster in 15 - 30 mins.
I've tried SMS reset several times but it did not help.
I also ran the apple hardware test (extended testing) and got the following error:
4SNS / 1 / 40000000 : TS2p - 121.250
Could anyone help me understand what this error means?
Thanks.

There is a sensor error. That is most likely why you are experiencing the problem. Take it in for service.

Macbook running slow. Fan runs at high speed at times.

I have a late 2008 white Macbook and after installing an upgrade to OS X 10.6.6 it has been running slow in many applications, and the fan seems to run at high speed at times. Not sure if the change in performance is related to the upgrade, or just coincidental. I currently have 2GB of memory installed.

Do this reset perhaps twice:
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Shut down the computer.
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Attach the computers power cable.
Wait another 5 seconds and press the power button to turn on the computer.
The 5 second timing is important to a successful reset.

Macbook Pro Fans Running At High Speed

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