Why does my mac pro fan run at high speed?

My Mac Pro cooling fan started running at high speed.  Tried all the shutdown and restart options but didn't help.  Suggestions?

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.
If the problem still persists then create a new admin user account, logout of your account and log into the new account. See if this fixes the problem.
If none of the above help, then you may have a hardware issue such as a defective sensor.

Similar Messages

  • 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.

  • Mac Pro Fans run extremely high!

    Hello,
    I'm a video editor working within Adobe Premiere Pro CC, and I edit all kinds of footage from DSLR all the way up to RED 5K.  I have a Mac Pro (5,1), 6-Core 3.33Ghz with 32GB of DDR3 ECC 1333 MHz RAM.  Also in there is a GTX 770 Graphics card with 4GB on board RAM, and a RAID controller. 
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    Recently swtched graphics cards from a Quadro 4000 to this GTX, thinking the Quadro was the culprit, but the problem persists.
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    I realize the graphics card will heat things up a bit, but this still seems abnormal.  Can anybody help me troubleshoot?  Or at least provide an explanation of the fan layout of the Mac Pro, or list some recommended fan speeds?  I just can't seem to figure this thing out.
    Thank you so much.

    beauleland wrote:
    I realize the graphics card will heat things up a bit, but this still seems abnormal.  Can anybody help me troubleshoot?  Or at least provide an explanation of the fan layout of the Mac Pro, or list some recommended fan speeds?  I just can't seem to figure this thing out.
    Thank you so much.
    It does look abnormal, especially if Activity Monitor doesn't show any processes using much of the CPU's capability. Keep in mind that going full blast, your CPU can show up to 1,200% usage in Activity Monitor (six cores, two threads each).
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    Working up, the Intake fan is at the bottom of the front grill. The Exhaust fan is at the back end at the same level. You've  had the processor tray out. Inside the processor block (the box behind the DIMM slots with horizontal fins) is BOOSTA. There'd be a BOOSTB if you had two CPU's. Those three (or four) fans cool the CPU and RAM. Above all that is the PCI fan, which is set in a bit from the grill and, for some reason, doesn't fill it's space at the front so, theoretically, the air could blow into the PCIe area, make a U turn around the right side and go back through the fan again. Finally, behind the optical drive bay is the PS and the fan is at the front of the PS. There's also a fan on the video card, and I've never seen a monitor which could show that fan's speed or temperature.
    I keep an eye on smcFanControl's temperature reading in the menu bar and when it heads north of 100ºF I start going to one of the higher fan speed settings I've established. That's probably being over-cautious but I like my Mac Pro. And if the fans can't do the job, it's time to blow the dust out, and that includes the dust inside the video card.
    Hope that helps some.

  • Mac Pro fans run at max speed with no load

    I recently picked up a Mac Pro 12core and it's been working amazingly well for the past few months... in the past day or two though the fan has been ramping up to maximum and staying there. When this happens there are no processes taking more than 4% CPU and the system is never less than 99% idle. Resetting the SMC controller solved the issue for about 8 hours overnight, but when I started using the computer this morning the fan ramped up about 15mins into using it.
    The temps (in degrees C) around the mac pro: (collected with iStat Server):
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    Ambient: 23
    HD Bays: 23,25,24
    Mem Banks: 22,21,25,25,25,27,27,22
    Northbridge: 27
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    I did order it from the Apple Refurb shop and I think it'd fall into that timeframe (got it early November), but I was kinda hoping for some things I could try on my own before shipping it out?

  • Mac Pro Fan runs at full speed!!!!!

    Just set-up my new 2.66 Mac Pro.....added an additional WD Raptor 10k rpm drive and was psyched to use my new heavy iron. I was shocked at how loud the fan noise was!!!!! Upon initial boot it ran full speed (louder than my old 2.7 Dual PowerMac) until I turned it off.
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    I remember all of the logic board issues with bad G5's in the past and am wondering if I have a dud. Anyone else experience the same issues?
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    My 10K Raptor took a week to 'settle in' (or get burned in) and it did seem to cause a hum from the case. Took out the Raptor, no hum or vibration. I also made sure it was seated tightly, and moved it to slot #4.
    I ran a 6 hr ZoneBench 511MB test file 30x using 50 "zones" which gave it a good workout. I then ran Disk Utility Erase and under options, chose 7-way write (took a couple hours was all).
    Might want to read the review from SilentPC on the 150GB Raptor series.
    New Revision, New Noise?
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  • Macbook Pro fan running at high speed but is not experiencing heavy usage

    My computer is 3 years old and I've had no problems.
    A few days ago the fan started whirring incessantly after the computer had been on for only 10 minutes or so, even when experiencing minimal usage.
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    The first thing to try is a SMC reset.https://support.apple.com/en-us/HT201295 Also check for run away apps. https://support.apple.com/en-us/HT203184 You could also make sure the back vent is not getting clogged.

  • Why does my mac pro gets extremly hot about 20 min or so that im on and freezes about a 1 hour that im on then i have to power off etc can u help me pls

    why does my mac pro gets extrwhy does my mac pro gets extremly hot about 20 min or so that im on and freezes about a 1 hour that im on then i have to power off etc can u help me pls

    You can find out what processes are loading your system by running Application Monitor (in Launchpad > Utilities if you're running Lion or Launchpad > Other under Mountain Lion). Select "All Processes". Sort the display by CPU% (click on the label of that column). What processes show over 10% CPU?
    Also, when you click on the CPU button on the lower bar, what shows as your % idle? (Mine is showing about 98% just reading and posting here.)
    If no process is causing the heat, you could have a hardware problem.

  • Why does my mac pro slow right down when its on battery ???

    Why does my mac pro slow right down when its on battery....... cant watch dvds as they keep jumping, internet slows down as does everything, then i run it off the mains and its all fine again, so my mac book pro has not become very portable, please help

    Yo , yeah its a mac book pro, noly got it about 6 months ago, not sure if it has a removable battery, it all looks completely sealed, this is what it said in the battery menu:
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      Manufacturer:          SMP
      Device Name:          bq20z451
      Pack Lot Code:          0000
      PCB Lot Code:          0000
      Firmware Version:          0201
      Hardware Revision:          000a
      Cell Revision:          0158
      Charge Information:
      Charge Remaining (mAh):          5021
      Fully Charged:          No
      Charging:          No
      Full Charge Capacity (mAh):          5923
      Health Information:
      Cycle Count:          49
      Condition:          Normal
      Battery Installed:          Yes
      Amperage (mA):          -958
      Voltage (mV):          11946
    System Power Settings:
      AC Power:
      System Sleep Timer (Minutes):          10
      Disk Sleep Timer (Minutes):          10
      Display Sleep Timer (Minutes):          10
      Wake on AC Change:          No
      Wake on Clamshell Open:          Yes
      Wake on LAN:          Yes
      Display Sleep Uses Dim:          Yes
      Battery Power:
      System Sleep Timer (Minutes):          10
      Disk Sleep Timer (Minutes):          10
      Display Sleep Timer (Minutes):          2
      Wake on AC Change:          No
      Wake on Clamshell Open:          Yes
      Current Power Source:          Yes
      Display Sleep Uses Dim:          Yes
      Reduce Brightness:          Yes
    Hardware Configuration:
      UPS Installed:          No
    AC Charger Information:
      Connected:          No
      Charging:          No
    Hope you can help, its reallly quite annoying considering its quite new.
    Cheers

  • Why does my Mac Pro try to start up from a blank drive?

    I fitted a 2nd drive to my 2006 Mac Pro in anticipation of dual booting Windows (not done yet). The dive is FAT formatted but is empty. Why does the Mac Pro try to boot up from that drive every time I start it up, despite having set the startup disc as OS X in the System Prefs?! Getting sick of seeing the flashing folder with the question mark evry time I start it up.

    I might be inclined to think the problem is really on your startup drive. You might try reinstalling Snow Leopard.
    Also, try:
    Resetting your Mac's PRAM and NVRAM
    Reinstall OS X without erasing the drive
    Do the following:
    1. Repair the Hard Drive and Permissions
    Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
    If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
    2. Reinstall Snow Leopard
    If the drive is OK then quit DU and return to the installer.  Proceed with reinstalling OS X.  Note that the Snow Leopard installer will not erase your drive or disturb your files.  After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
    Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.

  • HT6099 why does the mac pro (late 2013) only support up to 60Hz at 1080p? TV screens are pretty much all 120Hz. So much for future proof.

    why does the mac pro (late 2013) only support up to 60Hz at 1080p? TV screens are pretty much all >120Hz. So much for future proof.

    http://en.wikipedia.org/wiki/4K_resolution
    http://en.wikipedia.org/wiki/4K_UHD
    http://www.techradar.com/news/home-cinema/high-definition/4k-tv-resolution-what- you-need-to-know-1048954
    Need More Pixels? Samsung’s 2014 UHD TVs Ship This Month
    Wall Street Journal · 2 hours ago
    Samsung’s 2014 lineup of Ultra High-Definition (aka 4K) TVs are on the way, and thanks to UHD content deals struck with Fox and Paramount—not to mention the…
    Focusing on TVs and 1080p and 60Hz isn't the question, or the 'future'

  • What is application memory and why does my macbook pro keep running out of it?

    what is application memory and why does my macbook pro keep running out of it?

    There is excessive swapping of data between physical memory (that is, the memory chips on the logic board) and virtual memory (one or more files on the startup volume.) That activity is relatively slow and causes the whole system to be less responsive. It can happen for two reasons:
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              Not enough memory for your usage pattern
    Please note that if the cause is a memory leak, installing more memory will not help. That's likely if you already have more than 4 GB of memory. Tracking down a memory leak can be difficult, and it may come down to a process of elimination.
    These instructions are for OS X 10.9 and later. Some details may be slightly different for earlier versions of OS X.
    When you notice the swap activity, open the Activity Monitor application and select All Processes from the View menu, if it's not already selected. Select the Memory tab. Click the heading of the Real Mem column in the process table twice to sort the table with the highest value at the top. If you don't see that column, select
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    If one process (excluding "kernel_task") is using much more memory than all the others, that could be an indication of a leak. A better indication would be a process that continually grabs more and more real memory over time without ever releasing it. Here is an example of how it's done.
    The processes named "Safari Web Content" render web pages for Safari. They use a lot of memory and may leak if certain Safari extensions or third-party web plugins are installed. Consider them prime suspects.
    Another process often implicated in memory leaks is "inkjet4" or "inkjet8," which is a component of the HP printing software. If it's present, force-quit the process in Activity Monitor to solve the problem temporarily. Empty the print queues in the Printers & Scanners preference pane (which has a slightly different name in each recent version of OS X.) If you don't use an HP printer, reset the printing system. Otherwise, if the problem is recurrent, update the software (which may not help) or contact HP support.
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    If you don't have an obvious memory leak, your options are to install more memory (if possible) or to run fewer programs simultaneously.
    The next suggestion is only for users familiar with the shell. For a more precise, but potentially misleading, test, run the following command:
    sudo leaks -nocontext -nostacks process | grep total
    where process is the name of a process you suspect of leaking memory. Almost every process will leak some memory; the question is how much, and especially how much the leak increases with time. I can’t be more specific. See the leaks(1) man page and the Apple developer documentation for details.

  • Why does my mac pro keep losing connection

    why does my mac pro and my husband keep losing connection

    Same thing happening to me... WiFi is loosing all the time, but I did something that would never work in 10000 years, but worked... I disabled WPA security password, and with no password i don't have problem since... try that...

  • Why does my mac pro freeze on start up ?

    Why does my mac pro freeze on start up ? Some times this three or four times before i can get it to start correctly.

    Model Name:          Mac Pro
      Model Identifier:          MacPro4,1
      Processor Name:          Quad-Core Intel Xeon
      Processor Speed:          2.26 GHz
      Number Of Processors:          2
      Total Number Of Cores:          8
      L2 Cache (per core):          256 KB
      L3 Cache (per processor):          8 MB
      Memory:          6 GB
      Processor Interconnect Speed:          5.86 GT/s
      Boot ROM Version:          MP41.0081.B07
      SMC Version (system):          1.39f5
      SMC Version (processor tray):          1.39f5
      Sorry i am new to mac & communities , when you say repair the drives and clone the system  what do you mean ?

  • Why does my Mac Pro open to a fuzzy screen when coming out of sleep mode?

    Why does my Mac Pro open to a static-filled screen when coming out of sleep mode?

    But does it then come fully awake? My MB Pro comes on with out of focus screen as if in a fog but once it comes awake it clears up, there is a progress bar at the bottom showing the progress from sleep

  • Why does my Mac Pro turn completely off while in the sleep mode?

    Why does my Mac Pro turn off completley overnight when I had placed it in the sleep mode?

    A power fluctuation may also shut your computer off from sleep mode.
    Is there anything in the System Log overnight?
    Here is a related article:
    About diagnostic and usage data in OS X Lion and Mountain Lion

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