Fans are running on high at all times

for some reason the fans on my computer are running oh high at all times. from the second i turn my computer on, even if the computer has been turned off for days.
does anyone know why this is?

Hi chasensanborg-
Try it with the drives disconnected. If the problem goes away, try plugging the drives in one at a time until you find the culprit.
LaCie drives tend to have power supply bricks that fail intermittently and get progressively worse. The symptom is difficult to troubleshoot as the drive will attempt to pull whatever power it needs from the FireWire bus if the brick is not supplying the right amount of juice. This can put a load on the power supply of the Mac and cause the fan to run more quickly in order to compensate for the heat generated by the load.
Luck-
-DP

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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!!!!!!!!!!!!!!!!!!!!!!!

Is it normal for the fans to run at 5500RPM at all times??

Tekserve in NYC seems to think so.
My MBP's fans always ran the way they should. Low speed and low noise until the processors got hot. Ever since I got the hard drive swapped out at Best Buy, the fans got loud immediately and stayed that way. I took it back to BB and the guy was sorry he couldn't fix it, but he did install a program called Fan Control in his attempts. The program doesn't work, but it does indicate the fans' speed, which is always between 5200 and 5500RPM.
I posted here and got some suggestions, which didn't help, unfortunately: http://discussions.apple.com/thread.jspa?threadID=1777907&tstart=0
Many months later, I got the chance to take it to Tekserve, who are supposed to be Apple gurus. After they held the laptop for two weeks, they not only didn't fix the problem, but they tried to convince me there there wasn't a problem to begin with. I have to say, I was insulted by that. They obviously were trying to save face by not admitting that they didn't know how to fix the problem, but at least the Best Buy guy was honest. Tekserve didn't have to make me feel I was a loon who was seeing UFO's or something.
Interestingly, they refunded my $140 diagnostic fee. Fair, but why do that unless they felt they didn't do their job?
Anyway, enough about that experience. Does anyone have any ideas about what the problem may be with these fans? Or better yet, does anyone know of a good Apple repair place in New York City?

Pentent,
Set up an appointment with a "Genius" at whatever location is most convenient to you. This will cost nothing.
It is possible that one or more temp sensors were damaged when the hard drive was swapped, or a cable for one or more was not re-connected properly. Again, this is another reason to trust only Apple with your Apple product (DISCLAIMER: Even Apple can and does mess up a job like this from time to time ).
If I were in your shoes, and provided the Apple Genius can offer no help, I would take it back to the shop that replaced the drive. They are the ones that messed it up (and make no mistake; it was messed up by the replacement), and they are the ones that should fix it free of charge!
Scott
EDIT: Don't go in expecting this right from the start, but there is the possibility that the Genius will have an in-house tech crack the case and look for loose connections, etc. If the problem is nothing more than an overlooked connector not put back in place, it may cost you nothing. Now that I think of it, I do recommend that you boot to the "Hardware Test" utility that is on your "Software Restore" disk #1, and look for fan/sensor errors. Insert the disk, then hold the "D" key when you hear the startup chime. This will give you some ammo when dealing with either the Genius or the shop that replaced the drive, or both. -s

Fans still running at high speed after smc reset

I have an i Mac Version 10.6.7, 4 GB RAM and 2.66 GHz Intel Core i 5 and since yesterday the fans are running at high speed. I tried to reset the SMC as instructed on Apple Support Site but it won't help.
Does anyone have an idea?
Thanks.

Try the reset again. Sometimes it takes several. This time leave it off wall power for an hour before holding in the power button.
If that doesn't help, run the Hardware Test in Extended.
http://support.apple.com/kb/ht1509

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 fan(Left only) is running at high speed all the time since last update. Any ideas? (Mac OSX version 10.7.5 on 27" mid 2011)

My left side fan is running at full speed all the time. I have downloaded free fan speed control app but does not help. Any advise

Fan Control Apps/Utilities generally can only raise the speed of the fans and not lower them.
Disable, turn off or uninstall whatever Fan Control that you installed and reset the SMC.
see > Intel-based Macs: Resetting the System Management Controller (SMC)
1. Shut down the computer.
2. Unplug the computer's power cord.
3. Wait fifteen seconds.
4. Attach the computer's power cord.
5. Wait five seconds, then press the power button to turn on the computer.
Then if the iMac's fan is still running fast, you probably have a loose sensor cable or bad thermal sensor and the iMac needs to be taken into service
see > Apple - Support - iMac - Service FAQ

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:
SMC RESET
http://support.apple.com/kb/HT3964
Shut down the computer.
Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
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.

My macbook pro keeps zapping me. even when the charger is not plugged in, my hands keep feeling tingly and the fans are running louder than usual

over the last two days since i updated my software, my laptop seems slower, the fans are running louder, and i keep feeling mild shocks (even without the charger). my hands feel really tingly and a little sore. what is going on?

cheesecakeyumm,
have you tried resetting your MacBook Pro’s System Management Controller? (I don’t know if that would have any effect against mild shocks, though.)

MacBook Pro's fans start running at high speed when the computer is asleep. Normal?

The other night, my MacBook Pro's fans started running at high speed when the computer was asleep. Loud enough to wake me up. And this just kept on going until I finally decided to turn the computer off. Is this normal? Is this anything to worry about?

This is not normal. See if a SMC reset solves the problem:
http://support.apple.com/kb/ht3964
Ciao.

Mac mini Intel Core Duo fan very loud and runs at high speed all the time.

I purchased an "Open box" Mac mini Intel Core Duo, 1.66Ghz, 2G ram, 80G HD and SD a few days ago from Fry's.
It runs beautifully except the fan is very loud compared to any Mac my family has ever had. It is so loud that we were thinking of putting it under the desk.
The fan runs constantly, and I mean all the time, at a high speed. You can really feel the air coming out the exhaust vents. The case is always cool to the touch as is the exhaust air.
My aunt bought a similar Mac mini (But only 512Mb ram) the same day. Her's is very quiet. The case feels just slightly warm, not unlike other Mac mini's I've seen.
Should my Mac mini's fan be running this way?
Thanks,
llulua
BTW: The "open box" was sealed with a Fry's label and it said that this had a new warranty. Yet, checking the serial number, it said that it had about 260 days left. I guess Fry's is backing it?
Also, someone told me that perhaps the main wire from the fan to the logic board is disconnected.
eMac 1Ghz, iBook 500 dual usb, Mac mini 1.66Ghz Intel Core Duo 2g ram Mac OS X (10.4.8)
eMac 1Ghz, iBook 500 dual usb, Mac mini 1.66Ghz Intel Core Duo 2g ram Mac OS X (10.4.8)

Since you have 2 gigs of memory, my thoughts are that when the party (Fry's or the origianl purchaser) upgraded the memory, they neglected to reattach the wire at the front of the Mini under the IR receptor at the right front corner that regulates the fan speed. This wire must be unattached in order to upgrade the memory, and is probably why the original person brought it back, because of the fan noise resulting from failing to reattach the wire. If that wire is left unattached, the fan runs continually at high speed to protect the CPU and system in general. If you do not want to use a putty knife to open the Mini, take it back to Fry's and ask someone who is Mac savvy to open it and reattach the small plastic receptacle at the end of the wire into its socket at the right front of the machine. When I go to Fry's, I am always concerned because the employees allow people to pry keys off of the Apple notebooks, so don't expect that their employees to know or care about anything Mac.
Al PB 12" 1.5 Mac OS X (10.4.5)

Fans are running at full speed after hard drive upgrade. Used same brand drive.

My Western Digital 500GB hard drive crashed. The date on it is Aug. 2010. I swapped it out for a Western Digital Caviar Black 1TB. All plugs were identical including the temp sensor cable. My fans now run at full speed. What gives? BTW. This is th 3rd WD hard drive to fail at my office in multiple iMacs. I have a 21.5 iMac i3 3.06ghz. I have tried the SMC reset,.. no luck. Reset the PRAM,.. no luck. Hard drive and computer function perfectly, it just sounds like a loud annoying PC.

After a little more research the only thing I found for 21.5" mid 2010 imac were three part numbers for three sensor cables which are a function of vendor:
922-9215, Hitachi
922-9216, Seagate
922-9622, Western Digital
The strange thing here is these are vendor specific and not model within vendor specific. So you started with a WD drive and replaced it with different model, but still a WD drive. So you would think it would require the same sensor cable.
Maybe the drives are different enough for this to matter. Or maybe you should check the connections one more time. Be it model of drive or connections, whichever it is, the sensor cable is the source of your problem.

I'm wondering if anyone else has had problems with their imac fans being extremely loud when running at slow speeds? When the computer heats up enough for the fans to run at higher speeds they quiet down. New HD fan was just installed.

I have an imac that I've had for a couple years. The fans have always been loud when running at the slower speeds. When the computer heats up enough for the fans to run at a higher speed the fans quiet down. I had installed SMC fan control after multiple attempts with Apple to get the fan issue resolved. That seemed to keep the fans quiet enough. I've never had a problem with overheating. Recently the fans were becoming loud again even running at the slightly higher speeds so I took it to my local Apple store and they replaced the hard drive fan. I got it back and it's now as loud or louder than ever!! And, now SMC fan control won't "stick." The fans will speed up, but then gradually go back to the lower "loud" levels. I'm at a loss as to what to do next.

Thanks jared,
I'm still dealing with this issue through Apple. Some time after I posted this, I contacted Apple again. They did start a case up for me, as I was experiencing the same behavior on two different machines, with two different versions of Windows.
So far it remains unsolved. I've logged iClouds for Windows on my desktop, which is brand new, then logged for awhile after completely uninstalling Norton Security Suite, depending on the Microsoft security for some time, and finally logged after I uninstalled iCloud for Windows, restarted, installed a clean download, and connected using a completely different test account, which Apple set up for me. None of this made any difference. Looking at the logs, it seems every 10 minutes, iCloudServices.exe creates a new TCP connection to confirm I'm using less than 5GB on iCloud, (which I am by a good margin, using less than 2GB), it seems this connection is not closed, and when the next iteration rolls around 10 minutes later, a new TCP connection is created. I come very close to having 6 TCP connections created per hour, until I restart my computer. This works out to... 6 x 24 = 144/day.
Perhaps the article you posted will shed some further light on this. I'm thinking seeing the state of the connection through netstats, at the least, could help.
For the last week, I've been putting a hold on further logging, as Apple wants me to create a new user account on one of my computers, install iCloud for Windows there, and log it running in the other account. This however basically means I cannot use my computer for a fair number of hours, and I've been busy enough with work the past week that I haven't the time or energy to afford to set this up and run it. I've had need of my computers too much for the past week.

Macbook pro fan constantly running on high

Hello i have a problem with my macbook pro
as soon as i start my macbook pro early 2011 up the fan goes immediately on high speed and when i look on on istat it says that the fan in going 0rpm but when i push above the F6 and F7 it suddenly stops and the fan goes to 2028rpm i have tried the smc reset and such and that doesn't work at all. I have looked at activity monitor and there was nothing strange as well so please does someone know how to stop this, its really annoying.

Most intereseting. The display shows temperatures at very acceptable levels but zero fan speed. That cannot be. Try a Apple Hardware Test:
http://support.apple.com/kb/ht1509
You may have to use the OPTION and D keys to start it.
Lets see if that picks up anything.
Ciao.

Imac fans keep running on high

I have an old imac 2 ghz intel core duo 21" (white) that we have at our holiday home for email and the kids. It's pretty crappy but does the job. This morning one of the kids accidently unplugged it and when it restarted the fans are going constantly on full. I checked activity monitor and there's nothing happening (CPU, Network or Disk) that warrants the fans. I zapped the PRAM and updated all the system software with no effect.
Is there anything I can do to reset them to normal? And, if not, should I worry?
thanks

Try resetting the SMC
Desktop Macs
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.

Fans running at high speed all the time

Hi,
I still haven't found a fix for full throttle fans at start up and session on my imac 11,3 mid-2010, 27", 2.8Ghz, i5 since Mavricks installed.
CPU temp 72 degrees F, CPU fan 3992 rpm, optical drive fan 3589 rpm, CPU usage <2%. Installed boot rom 1M112.0057.B01 is the latest version available.
Resetting PRAM & SMC don't work. As with others with mid-2010, 27" macs running 10.9, AHT does not work with the D key or the Option/D keys, so no hardware test.
Worked fine with 10.8.
If someone has a working solution, please let me know. Otherwise I will have to wait for Apple to release a fix. The fan noise is extremel annoying.
Thanks

I hate to say this but 72º F for the CPU is not hot. Did you have a hard drive replaced recently?
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.

Fans are running on high at all times

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