Why do both fans always run at 6000 RPM

I have a 17" MB Pro which spins both fans at 6k ALL the time (when it's on), even though the machine is not running hot.
They go off properly when it's in sleep mode, but after wakeup or restart the fan speed will start out slow (and inaudible), then slowly increase until after a minute or so both are running at max speed.
CPU heatsink temps are in the 93 - 95 degree (F) range.
I have reset SMC, deleted com.apple.PowerManagement.plist file, same behavior.
Any thoughts on this? The noise is getting to me.......

I have just begun to have the same problem as of last night, also with a 17" MBP. I spent time on the phone with an AppleCare rep, but the fans stopped on their own after a reboot into Windows and then back into Mac OSX. As of right now, they've started again.
As in the case of the first poster, my computer is not running hot, nor is any process taking up a lot of CPU cycles. This is really perturbing me.

Similar Messages

  • Why is my fan always running at 5500 rpm?

    My MacBook Pro is about 6 months old and suddenly over the last 2-3 days the fans are always running around 5500 rpm. The CPU heat is around 190 Farenheit with the fans running like this.  It's sitting on my desk with nothing but the desk underneath.  Are there any solutions to this issue?
    Thanks

    Okay - Dang this was a pain to figure out!
    Macbook Pro 15" 8gb 2.2ghz running 10.6.8. After many of hours and dead-end solutions on these "help" boards I finally figured out whay my fans were always running at full tilt, even when NO programs were running. Ready for the answer, wait for it.... my HP deskjet printer!!!!!! If I leave the USB connection plugged in the fans run a 5500rpm + even at idle! Unplug the usb to the printer - fans settle to uner 2000rpm. I did find a string that said look at my printer que for active lists - but to no avail.
    I have had this laptop to the mac repair for this problem (of course they coulnd' simulate it there) and done all the dang SMC resets, system installs, etc told to do on these boards - AND NO, it is not "normal" for the fans to run like this!
    Hope it helps someone out there who has been pulling out their hair with this one!

  • Fans always running at 6000 RPM.

    I have had this problem since my friend gave me his old macbook pro. The fans are very loud and running very fast. First I thought dust might be stuck inside but I checked and nothing was there. Nevertheless I cleaned it. When I powered on my macbook it was still very loud so I checked with SMCFanControl and it was still running at 6000 RPM. I have tried resetting PRAM and the SMC without any success. Also software like SMCFanControl and iCyclone won't let me change the speed even though the CPU is at 40C most of the time. I don't really want to take it for repair at the apple store because they will probably charge me a fortune. It is a MacBook Pro Late 2006 model. Thank You.

    Same situation here - the only update: it started to happen after I replaced the palmrest, screen assembly and installed SSD Intel X25M drive. First, at startup fans are quiet, and then slowly going to higher speeds. Since I did upgrade everything at the same time I did not catch what was the source of this issue. First I blaimed SSD since it's not getting any warmer (as oppose to standard SATA drive) and that might have confused the Mac's fan control. The other thought was the SSDs have a different SMART reporting method... Well, all kinds of resets (SMC and PRAM) did not help, neither utilities like smcFan Control and others. BTW, smcFan control shows temps from 35C-37C and 5200-5500 RPM. Fans are blowing a cool air, no signs of overheating at all.
    Bad temp sensors?
    Any thoughts?

  • Hard Drive fan suddenly running at 6000 rpm

    Hi, I have a 2009 20" iMac, 2.66GHz Intel Core Due running 10.5.8. I have iStats Pro and SmcFanControl installed.
    Randomly, my HD fan goes from 1099 to 6000. I can fix it by putting my Mac to sleep, wait for 10 seconds, and then proceed, The HD fan speed goes from 6000 down to 1099 and it will stay there. Sometimes this hapens a second or 3rd time. Every time I put the machine to sleep. And every time it "fixes" it. After 3 to 4 times going to sleep, the problem weems to be permanently solved and the "vacuum cleaner" does NOT turn on anymore. Obviously, this is highly annoying and not a solution.
    Is there any real solution to this problem? I bought this machine in July 2009, no Apple Care because I have had luck with Apple products in general (my iMac DV from 1999 still runs...). It seems as if my luck has run out.
    I scoured the boards but nobody seems to really know what is going on. I read about temp sensors and logic boards. Seems dramatic to me. Is this something I can fix myself?
    Has Apple recognized this as a real problem??? Because it IS! I am very disappointed. You do not expect this from a newer machine.
    Thanks for your help.

    First off smcFanControl is not going to fix the problem, it can only run the fans faster and not slower than the iMac's System Management Controller is telling them to run.
    It sounds as if you have either 1 of 3 problems:
    1. you need to reset the iMac's SMC.
    2. the Hard Drive is actually over heating for some reason.
    3. you have a faulty HD temperature sensor or bad connection (wire) between the sensor and logic-board.
    I would do the following:
    1. disable or uninstall smcFancontrol
    2. reset the iMac's System Management Controller
    as per >  http://support.apple.com/kb/HT3964
    1. Shut down the computer.
    2. Unplug the computer's power cord.
    3. Press and hold the power button for 5 seconds.
    4. Release the power button.
    5. Attach the computers power cable.
    6. Press the power button to turn on the computer.
    3. then if and when the HD fan acts up (ramps to 6000rpm) run the extended Apple Hardware Test
    as per > http://support.apple.com/kb/HT1509
    4. use the iStat Pro widget to check the sensor readings for the Hard Drive and Hard Drive bay when it acts up.
    see > http://www.islayer.com/apps/istatpro/
    Dennis

  • Fans are running at 6000 rpm at all times.

    Hello I´m from Germany an try my best to explain ;-)
    in my MacBookPro2,2 Intel Core 2 Duo 2,16 GHz the fans are running all the time without stopping.
    When I start the MacBook the fan start to run at maximum.
    It is making me crazzy. Please help me. SMC Reset and cleaning the Fans and what ever else I did does not help.
    I tried a tool to find out whats up?
    Akkulader Nachbarschaft    51°C
    Akkumulator    30°C
    CPU A Nachbarschaft    39°C
    CPU A Temperaturdiode    43°C
    CPU Kern 1    40°C
    CPU Kern 2    38°C
    Grafikprozessor Chip 1    39°C
    Hauptkühlblech 1    39°C
    Hauptkühlblech 2    34°C
    Hauptplatine    40°C
    Linke Handauflage    31°C
    SMART Festplatte FUJITSU MHW2120BH (NZ0ST6B2A4NB)    35°
    Nothing is really hot?
    Hope you can help me ;-)

    Run the extended version of the Apple Hardware Test that you'll find on one of the DVDs that were shipped with your MBP. I expect AHT will report a SNS error, indicating that one of the temperature sensors in your machine has failed. When a temp sensor fails, the fan or fans usually run at top speed all the time as a precaution, in case the machine is overheating but the bad sensor is failing to report it.

  • My fans are running at 6000+ RPM all the time - new MBA 1.86

    I have a new MBA 1.86. It seems like the fans are constantly running high at 6000-6200rpm while only running a few apps (Firefox, iTunes, VMware).
    Is this normal?

    i was such a big fan of apple but now using the 1st gen macbook air has begun the pain it works very sluggishly cannot watch videos on youtube it gets freaking hot and then the os becomes so sluggish i have to close the lid and reopen but every 10-15min interval i've to do it.I tried contacting apple did every possible thing but didnt get any solution so have planned to sell it off and buy alienware as it is the best powerful machine,in india no proper support for apple no proper repairing guyz really screwed up this time buying MBA iam **** up now apple better take some measures or discontinue MBA coz everone is complaining abt overheating!!!!!!!!!!!!!!!!!!!!!!!

  • Will fans running at 6000 rpm hurt my macbook pro?

    Whenever I run certain programs the fans will run at 6000 rpm after 20 mins or so.  The actual temp of the computer will reach 80C max but the fans seem to be working very hard. Will this harm my computer?

    Yes and no. The fans are spinning at that speed to try and keep the system cool. That is normal. But the excess heat being built up from that program will cause parts to ware faster than less heat.
    Will it cause the system to fail sooner than later? Maybe then maybe not. Each computer is different, even of the same exact model. Some last a long time, other don't no matter how they are ran or treated.

  • Fan always running on my HP Pavilion All-in-One 200-5000 (model #2MD0400F1W)

    The fan on my HP Pavilion All-in-One 200-5000 (model #2MD0400F1W) seems to be always running (and it's not quiet). I believe I'm running the latest BIOS and I've already checked to make sure the air vents are clear. I'm not running any memory or processor intensive applications. Any suggestions how to reduce how long and frequently the fan seems to be running? Thanks.

    Hello @jmgoldsmith,
    I understand that you are having issues with the fan always running on your HP Pavilion All-In-One 200-5000 Desktop PC. I would be happy to assist you, but first I would encourage you to post your product number for your computer the number you provided is not a product number (example : HP Pavilion All-In-One 200-5000t CTO Desktop PC has a product number of BN997AV). I am linking an HP Support document below that will show you how to find your product number. As well, if you could indicate which operating system you are using. And whether your operating system is 32-bit or 64-bit as with this and the product number I can provide you with accurate information.
    How Do I Find My Model Number or Product Number?
    Which Windows operating system am I running?
    Is the Windows Version on My Computer 32-bit or 64-bit?
    Please re-post with the requested information and I would be happy to provide you with assistance. Thank you for posting on the HP Forums. Have a great day!
    Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
    Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
    Dunidar
    I work on behalf of HP
    Find out a bit more about me by checking out my profile!
    "Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

  • My fan always runs on my macbook, any tips?

    Currently I have my macbook on a clean desk with good ventilation, but my fan always runs, even if there are no programs open. I've reset the SMC, and checked that theres no printing jobs in the printing queue but no luck. I've had this macbook for about a year and a half and have used it a ton since then. I dont want anything to burn out or break in my laptop. Any tips? thanks

    I have the same problem on my late 2008 Macbook white 2.1 GHz Intel duo, running 10.5.8. I had read in another post here that I should check Activity Monitor and I did so. The first time I tried, as soon as I launched AM the fan stopped. I then left AM open and the next time the fan started (I was online, doing nothing in particular - I did have 4 or 5 panels open though) I checked AM and the process that came at the top of the list with 90-odd CPU usage was kernel_task. I quit AM and then launched it again and the fan stopped, with kernel_task taking up about 2% of the CPU and Safari around 30%.
    What's going on? Hardware? Software?

  • Satellite P100-347: After 4.10 BIOS update fan always runs at maximum

    Hi!
    I have an P100-347 and had graphics stuttering problems while playing games. By updating BIOS 4.0 to 4.10 it solve the stuttering problem!!!
    Now my fan always runs at maximum, It never ideals.
    It's still the same even when i chooes lowconsumption configuration. I use the same drivers as before, just only updated the bios.
    I have alsow tested with the latest intel chipset divers and Nvidia driver and it is still the same.
    So my conclution is the BIOS, does Toshiba know anything about this issue and working on a newer bios?
    Kind Regards Ismael

    Everything points that the BIOS 4.10 is the common issue to the always high speed of the graphical fan even when the laptob is in standby mode.
    I want to see some action like a new revise of the BIOS 4.10!
    / Ismael

  • HELP ME !!!! My MBP fans are stuck on 6000 rpm

    I recently cleaned the right fan on mbp because it was making a grinding noise . I then ran smc fan control to make sure that my fans were running well , now everytime i switch on my mbp the fans rev up to 6000 rpm and stay even if no programs are open. My temps are averaging around 35 celcious . I have tried everything , smc reset , pram reset , osx complete reinstalation and also tried to do a firmware restoration . None of these things have worked . Please help me

    Have you tried running the Apple Hardware test? I'm wondering if a thermal sensor may have become dislodged or unplugged, as that would also cause the fans to run all out.
    Also, have you checked in Activity Monitor to be sure you don't have some hung up process hogging the CPU and causing the fans to run all out? Be sure to select "CPU" on the bottom bar and "All Processes" on the top.
    Good luck!

  • Cpu fan is running at -1 rpm!!

    h, i've been facing slight problems with my mac that it overheats sometimes, so after some research i found out that i can download a program called fan control where i basically can control the speed of my fans. then i found out that my cpu fan is running at -1 rpm, the desired rpm is 300, my other fans (hd and dvd) are running at the desired rpm, i'm not sure if i should be worried!!! i mean do i have to replace it!? and if so where and how!!!?? btw i've just got this laptop used, it's a 15" late 2008 with the highest configueration.

    Resetting the SMC was my first thought, but you have done that. You might also try resetting the PRAM/NVRAM:
    http://support.apple.com/kb/ht1379
    After that if the issue persists, I would call AppleCare.

  • Post serviced IMac and the fan is running at top RPM.

    I had my IMac serviced doe to the HDD dieing. When I got it back, the HDD fan is running at max RPM. I've tried to reset the PRAM (7 times, over and over) and tried to reload the SMC patch and no luck. Apple Store is over 2 hours away so I'd like to save 8 hours on the road by figuring our if there is anything else that I can try to fix this.
    C2Duo IMac with Tiger and the 'fans played on' from the moment I got it back and started restoring the data.
    Any ideas?
    Also, a new AppleCare agreement talks about 'onsite service'. Do they actually do onsite service? Does one have to request it? It wasn't offered when I called in after finding the fan issue.
    Thanks!!!

    So, I called AppleCare and they walked me through an 'SMC reset' routine and now SMCFANCONTROL doesn't run AND all the fans sounds like they are running at full speed.
    I got a call that they want to swap my system rather than have me wait for a new sensor. I wonder what issues I might have with a 'refurb' system.
    There is another issue, there is a smear of some kind of glue on the screen from the service experience.
    It's been interesting dealing with their support...
    I can't stand the whine of the fans and now am back on Windows for most things. Yippee...

  • Why is my macbook Slow and fan always running

    I recently upgraded to Mavericks, and since then my computer has been slow and lagging a lot. I see the perpetual spinning beach ball more than I would like. I have done everything I can think of within my knowledge to rectify the problem but it still seems slow to me. I have unistalled apps, cleared caches, run an antivirus, run onyx and cleanmymac applications. I don't know what else I can do. I also find that my fan is running constantly and when I look at the activity monitor nothing is eating my CPU, in fact it is always below 10%. Here is my most recent Etrescheck. PLEASE HELP!! I'm open to all and any suggestions. Thank YOu
    Hardware Information:
              MacBook (13-inch, Aluminum, Late 2008)
              MacBook - model: MacBook5,1
              1 2 GHz Intel Core 2 Duo CPU: 2 cores
              2 GB RAM
    Video Information:
              NVIDIA GeForce 9400M - VRAM: 256 MB
    System Software:
              OS X 10.9.1 (13B42) - Uptime: 0 days 0:10:11
    Disk Information:
              TOSHIBA MK1653GSX disk0 : (160.04 GB)
                        EFI (disk0s1) <not mounted>: 209.7 MB
                        L?KLN (disk0s2) /: 159.18 GB (97.69 GB free)
                        Recovery HD (disk0s3) <not mounted>: 650 MB
              HL-DT-ST DVDRW  GS21N 
    USB Information:
              Apple Inc. Built-in iSight
              Apple, Inc. Apple Internal Keyboard / Trackpad
              Apple Computer, Inc. IR Receiver
              Apple Inc. BRCM2046 Hub
                        Apple Inc. Bluetooth USB Host Controller
    FireWire Information:
    Thunderbolt Information:
    Kernel Extensions:
              com.avast.PacketForwarder          (1.4 - SDK 10.9)
              com.avast.AvastFileShield          (2.1.0 - SDK 10.9)
    Startup Items:
              HP IO: Path: /Library/StartupItems/HP IO
    Problem System Launch Daemons:
    Problem System Launch Agents:
    Launch Daemons:
              [System] com.adobe.fpsaud.plist 3rd-Party support link
              [System] com.avast.init.plist 3rd-Party support link
              [System] com.avast.uninstall.plist 3rd-Party support link
              [System] com.macpaw.CleanMyMac2.Agent.plist 3rd-Party support link
              [System] com.microsoft.office.licensing.helper.plist 3rd-Party support link
              [System] com.sibelius.sari.plist 3rd-Party support link
    Launch Agents:
              [System] com.Affinegy.InstaLANa.plist 3rd-Party support link
              [System] com.avast.userinit.plist 3rd-Party support link
              [System] com.hp.devicemonitor.plist 3rd-Party support link
    User Launch Agents:
              [not loaded] com.avast.home.userinit.plist 3rd-Party support link
              [not loaded] com.google.keystone.agent.plist 3rd-Party support link
              [not loaded] com.macpaw.CleanMyMac2Helper.diskSpaceWatcher.plist 3rd-Party support link
              [not loaded] com.macpaw.CleanMyMac2Helper.scheduledScan.plist 3rd-Party support link
              [not loaded] com.macpaw.CleanMyMac2Helper.trashWatcher.plist 3rd-Party support link
    User Login Items:
              Mail
              Opera
    Internet Plug-ins:
              AmazonMP3DownloaderPlugin1017277: Version: AmazonMP3DownloaderPlugin 1.0.17 3rd-Party support link
              CouponPrinterPluginMac1.0.0.7: Version: CouponPrinterPluginMac 1.0.0.4 - SDK 10.7 3rd-Party support link
              Default Browser: Version: 537 - SDK 10.9
              Silverlight: Version: 5.1.20913.0 - SDK 10.6 3rd-Party support link
              FlashPlayer-10.6: Version: 11.9.900.170 - 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
              AmazonMP3DownloaderPlugin: Version: AmazonMP3DownloaderPlugin 1.0.17 3rd-Party support link
              SharePointBrowserPlugin: Version: 14.0.0 3rd-Party support link
              iPhotoPhotocast: Version: 7.0
              CouponPrinter-FireFox_v2: Version: 1.1.10 - SDK 10.6 3rd-Party support link
              JavaAppletPlugin: Version: 14.8.0 - SDK 10.9 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:
              Move-Media-Player: Version: npmnqmp 071503000004 3rd-Party support link
              fbplugin_1_0_3: Version: (null) 3rd-Party support link
              npBcsMcTcIO: Version: (null) 3rd-Party support link
    3rd Party Preference Panes:
              avast! Preferences  3rd-Party support link
              Flash Player  3rd-Party support link
              Growl  3rd-Party support link
    Bad Fonts:
              None
    Old Applications:
              SLLauncher:          Version: 1.0 - SDK 10.5 3rd-Party support link
                        /Library/Application Support/Microsoft/Silverlight/OutOfBrowser/SLLauncher.app
              Epson Printer Utility 4:          Version: 9.17 - SDK 10.5 3rd-Party support link
                        /Library/Printers/EPSON/InkjetPrinter2/Utility/UT4/Epson Printer Utility 4.app
              HP Device Monitor:          Version: 2.7.0 - SDK 10.5 3rd-Party support link
                        /Library/Printers/hp/hpio/HP Device Monitor.app
    Time Machine:
              Skip System Files: NO
              Auto backup: YES
              Time Machine not configured!
    Top Processes by CPU:
                   3%          WindowServer
                   1%          EtreCheck
                   0%          com.avast.fileshield
                   0%          airportd
                   0%          aosnotifyd
    Top Processes by Memory:
              53 MB          Opera Helper
              39 MB          Opera
              23 MB          Finder
              23 MB          WindowServer
              20 MB          EtreCheck
    Virtual Memory Information:
              33 MB          Free RAM
              637 MB          Active RAM
              611 MB          Inactive RAM
              278 MB          Wired RAM
              1.49 GB          Page-ins
              5 MB          Page-outs

    Installing CleanMyMac will corrupt your system. I know of no way to recover from its effects other than to reinstall OS X and other essential software. "Essential" is defined to specifically exclude CleanMyMac as well as all similarly ill-conceived "cleaning" products that are likely to have similar effects. Never install such junk on a Mac.
    Erasing your Mac will have the benefit of eradicating it, the useless Avast garbage, and Internet Plug-Ins as well.
    You are likely to need more memory. 2 GB is barely sufficient to run any OS later than Snow Leopard. Your MacBook can address as much as 8 GB and I recommend at least 4 GB.

  • Closed lid, fans always running

    Howdy. I've been using my MBP in closed lid mode attached to a Cinema Display. I expected the fans to run constantly when in use, especially with XP running in Parallels. When I put the computer to sleep--still attached to monitor, usb keyboard, bluetooth mouse and power adapter--it acts as I suspect it would, fans stop, front LED starts fading in and out. However, I'll come back later and the LED will be solid, display blank, and the fans running away. The keyboard or mouse will wake the computer and then it runs as normal. This has happened overnight as well as in half an hour, and several times.
    I am kind of getting concerned about using the computer this way. Fans always fail, and I am not really looking forward to opening the computer up again.
    I guess my questions are: why would the computer be running the fans, especially after being in sleep for hours, and is it shortening my MBPs expected life using it with the lid closed?
    Thanks.

    I'd guess/assume that something is actually waking it from sleep and causing the heat/fan activity and that when you return you're not actually waking it up just re-activating it from screensaver mode ...
    Run Utilities/Console and click 'All Messages' top left - what lines appear during the time you think it should be sleeping ?
    It isn't shortening the life of the hardware using it in clamshell mode but if something is causing it to overheat regularly that will have an impact on internal components/motherboard that could be detrimental.

Maybe you are looking for