My Macbook Pro fans always on

Hi to everyone,
I just noticed some days ago that on my brand new MacBook Pro (5-6 months older) 2.3 ghz I7 with 10.8.5, the right and left fans are always on.
From what I can remember, in this months I never noticed something like this, I mean fans always on, especially when the mac wasn't run any application.
I don't use to install craps on the macs, I always used this philosophy, even if the Mac is less "fancy" and I always got great result, my Powerbook G4 1.67 ghz with 10.5.8 still working great!
I usually use it mainly for music production and daily net-mail works. I have for the 80% of the time the Mac connected with a NEC EX231W external display by thunderbolt, a Motu 4Pre, by the fw800, a WD usb3 hd on a usb port and a 4usb hub on the other port.
From what I can remember in the past months I neved had the fan always on, for most of the time they were really off and from the first moment I always use the set I metioned above.
So now I'm starting to be worry about, because I noticed that even when the mac is working with the battery, with no devices connected, running really few applications, not particualry heavy, the fans are always at 1998/2000 rpm.
Thanks to everyone can help me to fix this problem.

As we've repeatedly mentioned, the fans are designed to run all the time, in a 2000-6000 RPM range. If at any time speed falls to zero, "Houston, we have a problem" time has arrived. The heat load from the CPU (and GPU, if so equipped) would quickly reach the danger zone.
Why would you get a zero RPM reading? As usual, it is either a software or a hardware problem. Software: whatever it is you're using for the readout ain't getting it right OR there's a major "kunfuzzion" in there. Hardware: speed sensor(s) damaged OR fan(s) blocked and really not running. Either way, the issue needs to be addressed pronto, cause if "no fan(s)" is really and truly NO FAN(S), Mac's gonna be kaput in no time.
Note that I say fan(s) cause we've yet to confirm if yours is a 15" unit. Those and the ancient 17" come with two fans. The 13" units have a single one.

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Macbook pro fan always on

Hi,
So as of a couple of days ago, whenever I use my macbook, doing some very basic tasks (like using the internet/word processing/whatever) the fan always revs up and works quite hard.
I am aware of that sometimes programs are stuck on high CPU (i.e. flash) and hence take up quite a bit of memory, but these last couple of days, nothing is out of the ordinary when I check the activity monitor and normal amount of memory is used.
So now my computer is constantly very hot and fan is always working hard? Any ideas how I can fix this?
I've attached two images of what the activity monitor usually looks like.
Could the fan have stuff stuck in it? If so, how can I fix it as I have a unibody macbook pro.
Cheers!

Like stedman says, in activity monitor click where it says %CPU so it arranges the processes from highest to lowest to check if you have any runaway processes, and if you have any that are running at a high % (80%+) select them and click Quit process.
if there are no runaway processes try reseting the SMC

Macbook pro fan always on... and I've read all the threads.

Have read countless threads, but still no definitive answer that i've been able to understand: MBP fan runs constantly with CPU load very low. i NEVER have a high CPU load when i look at activity monitor--(the highest CPU load when i look there is usually activity monitor itself!)
i am running 10.8.4 on a 15" MBP 2.53 core 2 duo early 2009. when i'm running relatively simple processes--listening to music, pages, keynote, google searches online -- fans run almost all the time and surface of laptop is hot. by comparison, i have a business MBP that is configured similar to this one--it's also a 15" 2.53 but an i5 -- it has less RAM than mine, but the fan almost never comes on, even when i run a bumch of stuff to TRY and make it come on.
any help out there?

1. Reset the SMC. Don't know which type battery your macbook has so both procedures are below.
2. Download and install iStatPro http://www.apple.com/downloads/dashboard/status/istatpro.html so thatyou can actually monitor your temps and fan speeds.
MacBook and MacBook Pro
Laptops with a battery you can remove
Shut down the computer.
Disconnect the MagSafe power adapter from the computer, if it's connected.
Remove the battery.
Press and hold the power button for 5 seconds.
Release the power button.
Reconnect the battery and MagSafe power adapter.
Press the power button to turn on the computer.
Newer Mac portables with a battery you don't remove
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.

Macbook pro fan always running - cpus are pegged by kernel

I reloaded the os with no change. When restarted the fans start and the cpus are pegged within 1 minute.

Did you use the Command-R keys method or did you try Command-option-R keys to boot to true Internet Recovery? You should be able to wipe your hard drive (erasing it and formatting as "Mac OS Extended (Journaled)" with a single GUID partition. DON'T try this method if you don't have a backup as it will erase everything on the hard drive.
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My fans on my MacBook Pro are always going off
I am running VM ware as soon as I go to the PCs
Side The fans start
I can also be on the Mac side in the fans just start going
I'm not able to get online
On the PC side
And anyone please help

No sound with headphones. I ended up restarting my computer and upon rebooting the sound came back. So it works but I have no idea why it stopped working.

Mainstage 2.1 makes my Macbook Pro fans run full bore.

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My MBP fans have always run at full capacity when using MS 1, 2 or 2.1. They start out running normally but then start to rev up after a couple of minutes. You could try running some fan control software to manually adjust your fan thresholds but ultimately, does it really matter if the fans are running hard? Seems to me that they're running hard because they need to....MS is still very hard on system resources even if the meters say otherwise. It's the only app I run that causes the fans to run flat-out.

My MacBook Pro fan runs while sleeping

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The problem started about 2-3 months ago, but was pretty rare. When I noticed the problem, I would restart the computer and it would stop for 1-2 weeks. More recently it has become more constant, and now it always has the fan running when it's sleeping.
Any ideas on what I should do? Thanks!

Mine too. If you're worried you might like to try a laptop cooler like one of these:
http://www.amazon.co.uk/s/ref=sr_kk_2?rh=i%3Aaps%2Ck%3Alaptop+cooling+pad&keywor ds=laptop+cooling+pad&ie=UTF8&qid=1344763538
Not sure how well they'd work on a Macbook as there aren't any vents on the underside but it couldn't hurt and they're quite cheep.

My Macbook Pro fan

My Macbook Pro fan is always running and slows don't my computer, What's the issue and is there various ways to try and solve the issue?

Hey Unknownflavour,
There an be a few different reasons why your fans are running. I'd read up on the function of your MacBook Pro's fans in the following document:
Learn about the fans in your Mac
http://support.apple.com/kb/HT4543
Regards,
Delgadoh

MacBook Pro fans are deafd

Hi all.
After some unexpected shutdowns, I discovered that my MacBook Pro fans are both dead. iStat Pro shows them always at 0rpm and after some hardware testing with Tiger DVD I get the error code that fans are broken.
When MacBook Pro gets too hot it just shuts down so I wanted to repair it but I'd like to know an aproximate cost. Apple shops here in Barcelona (Spain) say they first want to ckech the laptop out (paying, of course) but i don't know if two broken fans can imply a motherboard change or whatever that can be expensive or worth it.
Any idea of an aproximate cost?
Thanks.
R.-

You should have it checked out by an authorized service provider to make sure nothing else is wrong. Better to be safe than sorry.

Macbook pro fan running slow

macbook pro fan is running slow and hot. it fluctuates between 212 and 375 rpms. heat rises up to 104c. do i need to replace the fan?

Before I suggest advice, I urge you to keep your machine under 160F at all times. I don't want to sound like an alarmist, but you can seriously damage your machine with that kind of use. Some solders melt at 225F, weaken at 190F.
You may have to replace the fan - or you may need to clean the inside of your machine and fan. It's hard to tell without inspecting your machine.
Or you may find that you need to get a different browser, and become more aware of temperature; laptop machines are much more sensitive to termperature issues than desktop Macs. Some day, you'll thank me for that advice.

What is causing my Macbook Pro fan to run constantly?

Hello. Recently my Macbook Pro fan has begun to run constantly at high power. I've checked the activity monitor and even when there is little RAM or CPU this occurs. I am wondering if the issue is the hard drive because the I am seeing spikes in disk activity at random times even when I am not using the hard drive. The computer is actually heating up when the fans are on at full power, so this also leads me to believe it could be the hard drive. I have already tried resetting the system management controller. Any other ideas? What should I do about this?
Thanks a lot.

Try raising the the the machine with wood, or , plastic botttle caps t get it up an inch or so, that way there is more air flow under the MBP to help with the air flow to help keep the cooling more een. Hope this helps.

Do you think my macbook pro fan could be broken?

Earlier today when I opened my laptop the screen was black and it appeared to be shut down. I hit the restart button and when the screen came up it said that I had "shut off my laptop due to a problem", though I did not manually shut it down. It was working 100% fine yesterday, so I'm not sure what could have happened to it. I know it wasn't my battery, because I had a full charge prior to shutting it and upon restart I still had a reasonable charge. I was more or less ignoring my laptop's unusual pop-up until I noticed that my computer was feeling much hotter than normal, so I checked iStat pro to look at temperatures. The CPU temp was around 82 degrees or so when I checked, while I was playing a videogame, which doesn't seem too high but the area around my keyboard felt much hotter to the touch than normal. What is really concerning me is that iStat says my fan is running at 0 rpm, even while I was playing a graphic-intensive game. The CPU is down to 65 degrees since I have stopped playing the game, however I have heard that your laptop will shut itself off to prevent overheating, and I'm wondering if this is what happened to my laptop sometime between yesterday and today. Does it sound like my fan could be broken? There isn't an apple store very close to me and my warranty just ended so I'd rather work it out myself if possible. I don't believe it is a faulty sensor either as iStat gave me temperature readings for everything. If you think my fan is broken, do you have any advice or know how much it would cost to fix/replace?

Good detective work.
I don't believe that 80ºC is extreme for occasional use, but over extended periods of time, this can stress your machine. I beleve you should visit your local Apple Store. They can determine if the fan is broken.
In the meantime, I could avoid:
- CPU-intensive activities like 3D gaming for extended periods of time.
- Using your notebook on your lap. That can raise its temperature thirty or more degrees.
- Dust or dirt can choke the fans, increasing temperatures and even the risk of fire.
Replacement of a fan is not very expensive, if it comes to that. You can also do it yourself:
http://clarebayley.com/2011/10/how-to-replace-a-macbook-pro-fan/

Please help. just got my jabra halo, worked fine with my iphone4 but can't use it on my macbook pro. it always prompts " the devise does not have the necessary service

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Found these instructions here:
https://discussions.apple.com/message/15388885#15388885
I found an answer that worked for me. I am using an iMac.
(1) Sign out of the iTunes store
(2) Open a NEW account with a new Apple ID
(3) Go through the sign up process and then go to the ACCOUNT INFORMATION page
(4) Go to RECOMENDATIONS & PING POSTING
(5) Turn on Genius there
Once the Genius updates, you can sign out and then sign in under your original Apple ID or the e-mail address you use for the iTunes store. All my store credit was there and now Genius worked.
Rather odd but I actually like the Genius at times except when it can't deal with some of my lesser known bands that I listen to.
Worked for me.

Macbook Pro Fan Trouble.

I recently sent my Macbook Pro Fans to get replaced. The problem was that my fans started to work even when the computer didn't need it. They would accelerate up to 6000 RPM and I would only be running Safari and iChat. Then the computer's fans would start to slow down and then speed back up. I sent in the computer for repair to get the fans looked at and they replaced them. Well the problem is still persisting. Should I call them about it again or is this normal? I only ask because I don't know if it is or not.

I have the same trouble with mine. I took it in for repair as it had a logic board issue, and they gave it back to me yesterday, but when I started using it, the fans ramped up to 6000rpm constantly for the entire day.
This morning I installed Fan Control to see if that would help, but it appears that Fan Control is not actually doing anything. The fans have been stuck around 4400 rpm at 35 degrees celsius even though I told Fan Control not to run at anything above 2000rpm until it gets to 40 degrees.
Is there a mysterious apple setting that says don't go above 35 degrees, or if you do ramp up the fan speed to max until it gets below it again, because according to Fan Control that is what is happening. It is not logical to be wanting to keep a powerful modern laptop at that temperature when the fan noise is so high. 45 degrees would be a fine operating temperature.
BTW, I checked the Hardware test and there is nothing to report from it.

Macbook Pro Fan Speed

Hi. I was having some trouble with my temperature of my MBP, but I somewhat solved it using Temperature Monitor and smcFanControl. I turned the fanspeed to Higher RPM in the smcfancontrol menu, and my temperatures are down from ~95 celcius to ~65 celcius (when playing Minecraft / other extensive tasks.)
Now, I would like to bring them down more (should I?) because I feel 65 c - 70 c is still really high...
So, my only question is: In smcFanControl, the Higher RPM setting is 4000 RPM, should I change that to 5000 RPM? I know it would help, but, can the fans handle that?
Thanks in advance
Could 70c (max) shorten it's lifespan?
(sorry I just am extremely extremely paranoid)

I am seeing a lot of negative talk about third-party software to control fans:
Istat menu 5 is good.
It conforms to apple's SMC; this means that it will never allow the fans to go slower than what SMC is asking, thus your computer will be safe using this software.
In contrast I have a Macbook Pro fan controller for bootcamping Windows 7 called MacFanx64.exe (64 bit) that requires you to understand command prompt.
It's nothing difficult, you just need to make sure that you enter parameters properly.
The only way I see one of these damaging any hardware components would be if you accidently told the fan to spin faster than the max speed.
I would agree that for OS X you aren't going to really need this because the engineering on the SMC isn't terrible, but if you happen to have SMC screw up like it sounds like you had, there's no way to know it unless you feel it getting really hot like that which I'm sure isn't great for your MBP.
Therefore having a monitor system is helpful because you can see the temperatures constantly.
Now for Windows 7 bootcamp it's a whole different story.
There is something wrong with the drivers that control SMC for bootcamp because the computer will get hot fast even in idle.
I was marking temperatures around 60-70 C just in idle - the fans still stay at 2000 rpm.
If someone finds something better than MacFan for Windows 7 bootcamp let me know.
Moral of the story, if you pick a good third-party application you're not going to harm your computer.
Think of it like a second line of defense.
Last but not least, if you're still having this problem do an SMC reset.
Apple has instructions on how to do it, just note that you need to pay attention to whether your MBP has a removable battery or not when doing SMC reset.
Cheers

My Macbook Pro fans always on

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