Why do the fans on my macbook pro suddenly rev up

The fans on my macbook pro (about 3 - 4) yrs old suddenly rev up and the computer gets very hot. This is sometimes (but not necessarily) at times of optimum use.
The case seems to be vented ok. I am running Mavericks osx and use computer for range of uses - graphics, e-mails, word and spreadsheets.
Is this a problem?
it sure make the computer noisy.

Hello kiwiwoodz,
Thanks for the question. After reviewing your post, it sounds like the fan is running at high speed while properly ventilated. I would recommend that you read this article, it may be able to help you isolate or resolve the issue.
Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support
Thanks for using Apple Support Communities.
Have a nice day,
Mario

Similar Messages

Why is the volume on my MacBook Pro suddenly so low?

The volume on my macbook pro is really low. It used to be much better, now I can hardly hear people when on skype or listening to music... everything is set on high volume... help!?!

Try:
Reboot into Safe Mode then reboot normally. Safe mode takes longer to boot than booting regularly. That is normal.
Intel-based Macs: Resetting the System Management Controller (SMC)
Resetting your Mac's PRAM and NVRAM
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.

Why is the fan on my MacBook Pro so loud?

For the past week, my macbook has been really loud. About 2 weeks ago, I noticed it would start getting loud when I ran high-energy programs, or when I was downloading large files or streaming movies. It would start getting loud, would stay loud for a little while, and would then die down. This week, specifically today and yesterday, my laptop has been loud constantly, even when I'm only running 2 tabs on google chrome. My laptop doesn't feel like its getting too hot or over heating. How can I fix this?
Hardware Overview:
Model Name:          MacBook Pro
Model Identifier:          MacBookPro8,1
Processor Name:          Intel Core i5
Processor Speed:          2.4 GHz
Number of Processors:          1
Total Number of Cores:          2
L2 Cache (per Core):          256 KB
L3 Cache:          3 MB
Memory:          4 GB
Boot ROM Version:          MBP81.0047.B27
SMC Version (system):          1.68f99
Any help is appreciated.

Try:
Reboot into Safe Mode then reboot normally. Safe mode takes longer to boot than booting regularly. That is normal.
Intel-based Macs: Resetting the System Management Controller (SMC)
Resetting your Mac's PRAM and NVRAM
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.

Why is the fan of my Macbook Air suddenly so noisy?

It has become very noisy. The fan is running constantly. I never heard the fan before. Has something broken. The performance has not changed but it takes much more to start up and shut down.

Hi aschicchi,
Welcome to the Support Communities!
Here are a few troubleshooting steps to address your fan issue:
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
"...these symptoms may indicate that an SMC reset may be necessary:
Fans
The computer's fans run at high speed although the computer is not experiencing heavy usage and is properly ventilated."
Before Resetting the SMC
Try each of the following steps in this order before you reset the SMC. Test the issue after completing each troubleshooting step to determine if the issue still occurs.
Press Command + Option + Escape to force quit any application that is not responding.
Put your Mac to sleep by choosing the Apple () menu from the upper-left menu bar and then choosingSleep. Wake the computer after it has gone to sleep.
Restart your Mac by choosing the Apple () menu from the upper-left menu bar and then choosing Restart.
Shut down your Mac by choosing the Apple () menu from the upper-left menu bar and then choosing Shut Down.
Resetting the System Management Controller (SMC)
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
I hope this information helps ....
Have a great day!
- Judy

Invites to my calendar do not appear in my calendar on macbook pro running Maverick, but appear on my other icloud syn ios 7 ipad and iphone. Why wont the invites show on Macbook Pro running Maverick?

Invites to my calendar do not appear in my calendar on macbook pro running Maverick, but appear on my other icloud synch ios 7 ipad and iphone.
Why wont the invites show on Macbook Pro running Maverick?
All other calendar events sync fine through Icloud.

Hi Fundads,
If you are having issues receiving calendar updates on your Mac, you may find the following article helpful:
iCloud: Troubleshooting iCloud Calendar
http://support.apple.com/kb/ts3999
Regards,
- Brenden

The fan in my Macbook Pro heats up

The fan in my Macbook Pro heats up quite fast.
I wanted to know how much it would cost to get it fixed as I don't have Apple care and my warranty has expired?

Buy an external microphone or a headset. Which type depends on what type Mac you have. The 13" model has a single combo jack, the 15" and 17" models have separate input and output jacks.

I loaded a lot of music from my CDs on to my iMac at home. All my music is stored on the cloud. So why is the music on my MacBook Pro different. The CDs are missing from this list.

I loaded a lot of music from my CDs on to my iMac at home. All my music is stored on the cloud. So why is the music on my MacBook Pro different. The CDs are missing from this list. The iTunes account details I use on both computers is the same.

Hi Chris,
Thanks for the reply.
I think you ave sorted my problem with your question. I thought that as my iTunes account was on their server (Cloud) and I had previously added CDs which showed up, that all my music was "on the cloud". I used to use Match but when I turned it off lost all my music that I had previously loaded onto my computer.
So I guess I have to use the cloud again to access my songs. This is frustrating as I fly a lot and can not use the music (Cloud based) when the phone is in flight mode as there is no internet.
So how then do I retrieve all my music to my iMac and have my laptop synced so they are the same?
I am totally confused now.

The fan in my macbook pro is really loud all of a sudden, what should I do?

A day or two ago, the fan in my MacBook Pro starting making a lot more noise...it kind of sounds like something is stuck in it? What can I do?

Check Activity Monitor.
http://support.apple.com/kb/TS1473
Fans
http://support.apple.com/kb/ht4543
Reset SMC.
http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
If this does nothelp, contact Apple.
Best.

Why would the fan on my macbook be constantly runs, even when no applications are running. Why?

Why would the fan on my MacBook constantly run? Even when I have no applications running? Is there a way to determine what is causing this to happen?

JAWade, try resetting the SMC and pram. Not always, but often those resets help problems like yours. Follow these instructions exactly.
To reset the SMC
Shut down the computer.
Unplug the computer's power cord.
Wait fifteen seconds.
Attach the computer's power cord.
Wait five seconds, then press the power button to turn on the computer.
Resetting PRAM and NVRAM
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

The monitor of my MacBook Pro suddenly became all black, I tried to reset but it did not work, what should I do? Why does this happen?

The monitor of my MacBook Pro suddenly became all black, I tried to reset but it did not work, what should I do? Why does this happen?

I advise to reply to the one you want to reply to.
You have had good information here. I will not repeat that here.
I would like to add:
you have incompatible software: start in SafeMode, read Woodmeister and see if it is free of issues.
Akamai is crap software needed or not, Huawei the same.
It is very possible that the keygenerator you used for generating a key for some softwares has infected your mac.
The non-regular software with the false key(s) are not compatible probably or generate malware. Luckily you can not update them automatically because the keygenerator blocked the software for contacting the developer... I propose to consider getting rid of those softwares by really good uninstalling.
You have a beautiful mac, don't degenerate it with crapped software. There are alternatives for expensive software, for example Adobe Photoshop has a free alternative (with a less beautiful interface) in GIMP. And so on.
Lex

10.7 Lion makes the fan in my MacBook Pro roar!

The fan in my MacBook Pro 13" Thunderbolt (2,3 GHz i5, 8 GB RAM) is driving me wild! As wild as a Lion! I was used to it howling like a starting spaceship whenever I was watching crappy Flash Video, but now with 10.7 Lion, the fan even blows like crazy in Mail.app.
What’s most annoying is that it doesn't spin at a constant speed but that it's speed, and thus volume goes up and down all the time. The guys at Apple can't be serious about this... The fan action in my previous MacBook Pro 13" (2.26 GHz C2D, 8 GB) was really moderate, but the SandyBridge-based machines seem to be a nightmare.
I rather accept a slower CPU, than the penetrating and annoying howling. Come on Apple give us some Firmware update! Where is the 'eye of Steve' when you need it?
P.S.: Please second this!
P.P.S.: I'm familiar with the Activity Monitor, and closely watch the processes, so it is not that I don't understand what is going on. Yet, still: My last C2D MBP was a zillion times quiter...

Mine is roaring too - like a computer readying for lift-off. I think it wants to be the next space shuttle.
In my case, it's definitely (at least in part) because clamshell mode currently has a major bug under Lion. You should be able to run an external monitor with the MBP lid open and internal screen off. After upgrading to Lion, the MBP screen comes back on as soon as you re-open the lid. So the only way to use only the external display is to keep the lid closed. Lid closed = poorer air circulation = hotter running = mad, mad fan noise plus a much unhappier and unhealthy living environment for the battery and other components.
One step forward, three steps back... Please fix, Apple.

Why are the graphics cards in macbook pro's so weak?

Considering the price of a macbook pro, why is it they don't offer anything more than intel iris graphics or a 750m? That's the only thing holding me back from getting a macbook pro. I like to game, and those 2 just aren't enough for the kind of gaming I do.

Apple - Feedback

Why are the fans on my macbook constantly running loudly

The fans on my macbook are running loudly and my computer is running very slowly.
Does anyone know a solution to this?

Either the cpu is cycling doing some intensive work (see Activity Monitor) or the SMC needs resetting.
http://support.apple.com/kb/ht3964
You can also install an app to monitor temperature and speed eg SMC Fan Control.

Does anyone know how to reset the fan on a MacBook Pro 13-inch (Late 2011) to it's factory setting speed (Maybe Terminal may help?)

I have a late-2011 13-inch MacBook Pro running OS X Yosemite. (Standard configuration).
My problem is that I downloaded a fan control application and it worked perfectly, but it started to get annoying so I deleted it.
Does anyone know how to reset the fan speed back to factory settings (Maybe a command in terminal?)

Hello damo1177,
It should help to reset your system's SMC and NVRAM.
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
About NVRAM and PRAM
http://support.apple.com/kb/HT1379
Cheers,
Allen

The fan on my macbook Pro is running constantly.

Seems to of started after I upgraded to Maverick maybe? Yesterday I did get a "memory is full" pop-up, or something of that nature. I then deleted 118 Gigs from my hard drive (and emptied the trash) but my computer still seems to be freezing up a bit and the fan is constantly running. I did an Etresoft check which is below:
Hardware Information:
          MacBook Pro (13-inch, Late 2011)
          MacBook Pro - model: MacBookPro8,1
          1 2.8 GHz Intel Core i7 CPU: 2 cores
          8 GB RAM
Video Information:
          Intel HD Graphics 3000 - VRAM: 512 MB
System Software:
          OS X 10.9.1 (13B42) - Uptime: 0 days 1:39:57
Disk Information:
          APPLE HDD HTS547575A9E384 disk0 : (750.16 GB)
                    EFI (disk0s1) <not mounted>: 209.7 MB
                    Macintosh HD (disk0s2) /: 749.3 GB (416.57 GB free)
                    Recovery HD (disk0s3) <not mounted>: 650 MB
          OPTIARC DVD RW AD-5970H
USB Information:
          Apple Inc. FaceTime HD Camera (Built-in)
          Apple Inc. Apple Internal Keyboard / Trackpad
          Apple Inc. BRCM2070 Hub
                    Apple Inc. Bluetooth USB Host Controller
          Apple Computer, Inc. IR Receiver
FireWire Information:
Thunderbolt Information:
          Apple Inc. thunderbolt_bus
Kernel Extensions:
          com.rim.driver.BlackBerryUSBDriverInt          (0.0.64)
Startup Items:
          HWNetMgr: Path: /Library/StartupItems/HWNetMgr
          HWPortDetect: Path: /Library/StartupItems/HWPortDetect
Problem System Launch Daemons:
          [failed] com.apple.AOSNotificationOSX.plist 3rd-Party support link
          [failed] com.apple.softwareupdated.plist 3rd-Party support link
          [failed] com.apple.wdhelper.plist 3rd-Party support link
Problem System Launch Agents:
Launch Daemons:
          [loaded] com.adobe.fpsaud.plist 3rd-Party support link
          [loaded] com.google.keystone.daemon.plist 3rd-Party support link
          [loaded] com.microsoft.office.licensing.helper.plist 3rd-Party support link
          [loaded] com.oracle.java.Helper-Tool.plist 3rd-Party support link
          [loaded] com.rim.BBDaemon.plist 3rd-Party support link
          [loaded] com.starfield.backupservice.plist 3rd-Party support link
Launch Agents:
          [not loaded] com.adobe.AAM.Updater-1.0.plist 3rd-Party support link
          [loaded] com.google.keystone.agent.plist 3rd-Party support link
          [loaded] com.oracle.java.Java-Updater.plist 3rd-Party support link
          [loaded] com.rim.BBAlbumArtCacher.plist 3rd-Party support link
          [loaded] com.rim.BBLaunchAgent.plist 3rd-Party support link
User Launch Agents:
          [loaded] com.adobe.AAM.Updater-1.0.plist 3rd-Party support link
          [loaded] com.adobe.ARM.[...].plist 3rd-Party support link
          [failed] com.apple.CSConfigDotMacCert-[...]@me.com-SharedServices.Agent.plist 3rd-Party support link
          [loaded] com.facebook.videochat.[redacted].plist 3rd-Party support link
          [loaded] com.memeo.Memeod.plist 3rd-Party support link
          [loaded] com.microsoft.LaunchAgent.SyncServicesAgent.plist 3rd-Party support link
          [loaded] Internet Everywhere.plist 3rd-Party support link
User Login Items:
          WorkspaceUpdate
          iTunesHelper
          SplitScreen
          Skype
          GrowlHelperApp
          AdobeResourceSynchronizer
          Microsoft Database Daemon
          Google Drive
          TmLoginMgr
          KiesAgent
          fuspredownloader
          TmLoginMgr
Internet Plug-ins:
          o1dbrowserplugin: Version: 5.1.1.17055 3rd-Party support link
          Default Browser: Version: 537 - SDK 10.9
          AdobePDFViewerNPAPI: Version: 10.1.8 3rd-Party support link
          FlashPlayer-10.6: Version: 11.9.900.170 - SDK 10.6 3rd-Party support link
          Silverlight: Version: 5.1.20125.0 - SDK 10.6 3rd-Party support link
          Flash Player: Version: 11.9.900.170 - SDK 10.6 Outdated! Update
          QuickTime Plugin: Version: 7.7.3
          googletalkbrowserplugin: Version: 5.1.1.17055 3rd-Party support link
          npgtpo3dautoplugin: Version: 0.1.44.29 - SDK 10.5 3rd-Party support link
          AdobePDFViewer: Version: 10.1.8 3rd-Party support link
          SharePointBrowserPlugin: Version: 14.3.9 - SDK 10.6 3rd-Party support link
          JavaAppletPlugin: Version: Java 7 Update 45 Outdated! Update
Audio Plug-ins:
          BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
          AirPlay: Version: 1.9 - SDK 10.9
          AppleAVBAudio: Version: 2.0.0 - SDK 10.9
          iSightAudio: Version: 7.7.3 - SDK 10.9
User Internet Plug-ins:
          Google Earth Web Plug-in: Version: 7.1 3rd-Party support link
          WbeTools64_14: Version: 1.0.23.53 © 2013 - SDK 10.6 3rd-Party support link
          fileEditTool64_15: Version: 1.0.35.65 © 2013 - SDK 10.6 3rd-Party support link
3rd Party Preference Panes:
          Flash Player 3rd-Party support link
          Growl 3rd-Party support link
          Java 3rd-Party support link
Bad Fonts:
          None
Old Applications:
          Microsoft Language Register:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    /Applications/Microsoft Office 2011/Additional Tools/Microsoft Language Register/Microsoft Language Register.app
          /Applications/Utilities
                    Adobe AIR Application Installer:          Version: 3.3 - SDK 10.5 3rd-Party support link
                    Adobe AIR Uninstaller:          Version: 3.3 - SDK 10.5 3rd-Party support link
          /Applications/Workspace
                    WorkspaceInstall:          Version: 1.0.13.29 © 2013 - SDK 10.5 3rd-Party support link
                    Uninstall:          Version: 1.0.9.20 © 2011-2013. All rights reserved. - SDK 10.5 3rd-Party support link
                    WorkspaceUpdate:          Version: 1.0.10.12 © 2013 - SDK 10.5 3rd-Party support link
                    DriveMapReconnect:          Version: 1.0.6.6 © 2013 All rights reserved. - SDK 10.5 3rd-Party support link
          /Library/Frameworks/Adobe AIR.framework/Versions/1.0/Resources
                    Adobe AIR Updater:          Version: 3.3 - SDK 10.5 3rd-Party support link
                    Template:          Version: 3.3 - SDK 10.5 3rd-Party support link
          SLLauncher:          Version: 1.0 - SDK 10.5 3rd-Party support link
                    /Library/Application Support/Microsoft/Silverlight/OutOfBrowser/SLLauncher.app
          /Applications/Microsoft Office 2011
                    Microsoft PowerPoint:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Excel:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Outlook:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Word:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Document Connection:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
          Calendar Desktop Notifier:          Version: 1.0.3.4 © 2010-2012. All rights reserved. - SDK 10.5 3rd-Party support link
          WBE Desktop Notifier:          Version: 1.0.17.47 © 2010-2013. All rights reserved. - SDK 10.5 3rd-Party support link
          Workspace Status:          Version: 1.0.3.6 © 2010-2012. All rights reserved. - SDK 10.5 3rd-Party support link
          Kies:          Version: 3.0.1.13112_5 - SDK 10.5 3rd-Party support link
          /Applications/Microsoft Office 2011/Office
                    Microsoft Graph:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Database Utility:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Office Reminders:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Upload Center:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    My Day:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    SyncServicesAgent:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Open XML for Excel:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Alerts Daemon:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Database Daemon:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Chart Converter:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
                    Microsoft Clip Gallery:          Version: 14.3.9 - SDK 10.5 3rd-Party support link
          Solver:          Version: 1.0 - SDK 10.5 3rd-Party support link
                    /Applications/Microsoft Office 2011/Office/Add-Ins/Solver.app
          /Applications/CheckMark/Payroll/2012
                    Payroll Trial:          Version: Payroll 8.2.12 - SDK 10.5 3rd-Party support link
                    Payroll Company Conversion Wizard:          Version: Payroll Company Conversion Wizard 8.2.12 - SDK 10.5 3rd-Party support link
          Microsoft AutoUpdate:          Version: 2.3.6 - SDK 10.4 3rd-Party support link
                    /Library/Application Support/Microsoft/MAU2.0/Microsoft AutoUpdate.app
          Adobe AIR Application Installer:          Version: 3.3 - SDK 10.5 3rd-Party support link
                    /Library/Frameworks/Adobe AIR.framework/Versions/1.0/Adobe AIR Application Installer.app
          /Library/Application Support/Microsoft/MERP2.0
                    Microsoft Error Reporting:          Version: 2.2.9 - SDK 10.4 3rd-Party support link
                    Microsoft Ship Asserts:          Version: 1.1.4 - SDK 10.4 3rd-Party support link
Time Machine:
          Skip System Files: NO
          Mobile backups: OFF
          Auto backup: NO - Auto backup turned off
          Volumes being backed up:
                    Macintosh HD: Disk size: 697.84 GB Disk used: 309.87 GB
          Destinations:
                    Justin's Mac [Local] (Last used)
                    Total size: 450.79 GB
                    Total number of backups: 19
                    Oldest backup: 2013-03-12 22:29:02 +0000
                    Last backup: 2013-05-25 01:23:47 +0000
                    Size of backup disk: Too small
                              Backup size 450.79 GB < (Disk used 309.87 GB X 3)
                    Shelly's Mac [Local]
                    Total size: 140.05 GB
                    Total number of backups: 0
                    Size of backup disk: Too small
                              Backup size 140.05 GB < (Disk used 309.87 GB X 3)
          Time Machine details may not be accurate.
          All volumes being backed up may not be listed.
Top Processes by CPU:
               1%          WindowServer
               1%          Activity Monitor
               0%          EtreCheck
               0%          Skype
               0%          sysmond
Top Processes by Memory:
          131 MB          thunderbird
          115 MB          Preview
          74 MB          Skype
          49 MB          Safari
          41 MB          WindowServer
Virtual Memory Information:
          17 MB          Free RAM
          1.73 GB          Active RAM
          1.71 GB          Inactive RAM
          1.38 GB          Wired RAM
          681 MB          Page-ins
          32 MB          Page-outs

Why do the fans on my macbook pro suddenly rev up

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