MBP - Should the fan be constant?

MBP - Should the fan be constant?
I am on my 5th MBP now and this one still has issues.
Since installing upgrading the firmware and installing bootcamp the latest one has the fan on constant. I'm sure after doing this on the others I have had the fan would only cut in when it was needed.
Does anyone else notice if the fan is on all the time?
I have also found that this MBP has the mooing problem. When it gets hot I hear a fan try to kick in on the left hand side it strains for about a second and then stops. It does this every 10-20 seconds.
I also have the whining issue but I am prepared to put up with that.
I don't want to have to take this one back but it is quite annoying.

Well I spoke to apple support but they were not sure if the fan was supposed to be constant. They told me that the fan should stop when it goes to sleep and when it is turned off. Duh-!!
They also tried to get me to reset the NVRAM by going into the Open Firmware (as far as I know Intel Macs don't use the Open Firmware).
I thought Dell support was bad but these guys take the biscuit.
In the end I was told I should take the machine back again as it was under 14 days old. I just wanted to know if the fan was supposed to be on all the time.
I now have a funny feeling that it might not be the fan that is making all the noise it could be the hard disk but I am sure none of the other MBP's I had were this loud. Does anyone else's HDD make a constant noise that sounds like a fan?
I am going to go back to the apple store again tomorrow and see if the display models are as bad. If they are quieter then I will make apple change it again. I might make them change it anyway as it is still making the mooing noise from the right hand fan occasionally.

Similar Messages

When should the fans kick inn

I ran a stress test on the CPU (a chess game computer vs computer) and the temp reached 66c and the fans stayed at 2000rpm.
Then i tried to start op the terminal x 5 (with yes) and that didn´t changed the temp I have a idle temp on 40 - 45c when i bowse the web, check mails and using word.
I can´t made the fans to kick inn only if i use smcfancontrol 2.1.2 - should i worry about any thing?

Hiya, i have the exact same issue with my MBP 2.4
http://discussions.apple.com/thread.jspa?threadID=1457214&tstart=50
For me it were 2 busted sensors that caused it, your temperatures are low/normal.
Run the yes test (2 terminals is enough, one for each core) and let the temperature build to 90C
If the fans dont kick in by then something is wrong, run the hardware test (insert dvd1 and boot with 'd' key held down) to see if any SNS (temperature sensor) errors come up.
Jay

Mega PC 865 Pro - should the fan run all the time?

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I'm sure I read that the CPU fan should not be runniing all the time? The fan runs constantly even when I'm not working at my PC. Is that normal? The box does not feel hot at all and I'm not running the TV card.
It's not that it's noisy but I had hoped it would be silent, like my Pentium M laptop. The fan on that only starts up when the computer is working hard, and then very rarely.
Thanks for a great forum. Imagine relying on MSI!

i don't know about the 865PRO, as i've never used one, or seen one in action
but on the other Megas, the fan usually rotates at a slower speed, until the temp increases under CPU load, then it speeds up to compensate
P4 Prescotts are hot CPUs anyway, and if they aren't installed correctly, they'll run hotter. try removing the heatsink, cleaning off all the old thermal pad, and using a good thermal compound such as Arctic Silver 5. apply a thin layer to the CPU die surface, and then refit the heatsink. make sure no stray cables are blocking airflow to the CPU heatsink fan.

Should the fan in my MacBook Air be running when the computer is shut and asleep?

Mine is, and this seems like a waste of battery life. I feel like the fan used to shut off when the computer was shut. But now, even when I close the MacBook, the fan still runs as fast as it did when the computer was open. Anyone know what the heck is going on here?

Yeah I think it is a Mavericks thing. Mine actually wasn't too bad. I closed the lid at night when my power was at about 52% and the fan kept going. I just went to bed, and in the morning, the fan had stopped, and my power was still around 51%, so it didn't eat any of my power like I thought it was going to. Mavericks must have the ability to cool your computer when needed even after you close it. It actually turned out to be not that big a deal.

HT4543 How often should the fan turn on while my macbook pro is asleep?

My macbook pro 17" is sitting on the counter, plugged in, with the lid closed. The fan is turning on every couple of minutes for 10 seconds or so. It seems like my battery is draining more when it's asleep than it used to, could this be the reason? Is that normal?

There is a light on the front right hand corner of the case. If that comes on then goes off and repeats every few seconds then the system is asleep. If it never comes on or comes on and stays on then the system is not asleep.

Why does the fan of my Satellite A500-19W acts weird?

I bought this computer one week ago. I have Windows 7 64 bit. When i surf the net or watch a movie or play music the fan starts for 2 minutes, than stops for 2 minutes than starts again. It's a cycle that never ends and the sound of it annoys me, making me think something is wrong. The computer is not hot other than the vent area. It can't be filled with dust since it's brand new. Is this normal? Should I be worried?

Hi,
My satellite A500 also acts like this, even if I surf the Internet, watching movie and CPU shows only 5%. I don't play games at all. It's not because of dust because I clean it regularly, installed all drivers, bios updated. Mostly, I run it in Power Saver mode but still makes noise.
The only way to make it less noisy to run the fan at constant speed like 54%, I just load the CPU with some applications that keeps fan running almost everytime and no annoying noise noticable

How to turn ON the fans

I have never heard the fans in this 20-inch 2.4 GHz iMac and yesterday the temp was
showing just over 140 degrees F while updating some software.
Three questions:
At what temp should the fans turn ON?
At what temp will the iMac shut down?
Anyway to manually turn ON the fans.
aRKay

aRKay sez:
+I have never heard the fans in this 20-inch 2.4 GHz iMac and yesterday the temp was+
+showing just over 140 degrees F while updating some software.+
I sez:
And you probably never will hear those fans unless there is a problem with one of them.
Search out "fans", "hot" and "heat" in this forum to find LOTS of posts from other users.
Apple is strangely silent on the topic of what constitutes normal cooling patterns for these new iMacs so a lot of new iMac users are curious about exactly these questions.
The consensus seems to be that iStat (from iSlayer.com) is a good way to check your fan performance & component sensor temperatures.
The 3 fans should run all of the time that the computer is on, and run silently.
The 3 fans should run at approximately 700, 1200 and 1200 rpm when the computer is at rest or cold, and these figures will climb during peak usage like disk burning or RAM & CPU intensive activities. Even when the revs climb, the fans should contine to run silently.
Set your iStat Pro widget to read and report your temperatures in Celsius like everyone else on this forum: there is apparently no civilised country in the world excepy for Malawi that still use Fahrenheit degrees for indicating temperatures, but Fahrenheit and Kelvin are offered as alternatives to Celsius on iStat for amusement only. The highest temperatures your iStat Pro widget should report for any monitored component will probably be between 58 and 63 degrees Celsius.
M

How many degrees of cpu, the fan start to increase rpm?

Hi guys, i have a mac mini late 2012 i5 processor. The fan is constant about 1800 rpm also when the mac is hot.
So, i am worried. How many degrees of cpu, the fan start to increase rpm?
There is a method to know if the fan working?

I have been using > http://www.crystalidea.com/macs-fan-control on my 2010 Mac Mini for several years. I use the Sensor-base algorithm to control the CPU/GPU temp's. With a lower setting of 148F (64.5C) and an upper setting of 194F (90C), the exhaust fan speed slowing ramps up from 1800rpm to around 2200rpm and the Mac Mini never goes over 160F (71C) even under a heavy load.
I don't worry about damaging the fan using only slightly elevated speeds, besides the fan in the Mac Mini is cheap and easy to replace compared to a logic board. One thing to be aware of when using any fan control-ware is the risk of greater dust accumulation. Base on that and the fact that it is dusty here in the late summer and fall, I open, check and clean inside my Mac Mini a couple of times a year.

How much noise should the hard drive make on a MBP early 2011?

Had since May/June last year i5 13" and only since I applied all updates few weeks ago it seems to be louder than it was before?
It sounds like a fan but isn't... obviously. Right hand side of track pad, and covering it, in fact just touching it dampens it to barely audible. Is that normal or has something gone a bit weird? A constant fan noise, which isn't the fan is now there permanently.

How much noise should the hard drive make on a MBP early 2011?
None.
The machine should only make noise if the Superdrive is being used or the CPU's heavily used, going by my Early 2011 17".
It sounds like a fan but isn't... obviously. Right hand side of track pad, and covering it, in fact just touching it dampens it to barely audible. Is that normal or has something gone a bit weird? A constant fan noise, which isn't the fan is now there permanently.
It's possible it wasn't installed correctly and/or the case is slightly off so it's resonating the hard drive vibrations.
Make sure you have a internet connection (don't move) and reboot the machine holding the d key down like forever and Hardware Test will run.
Backup your data off the machine, if the hard drive dies under 1 year or three years with Applecare, then go get a new one. else you can replace it yourself with a better one and not void your warranty if you don't break anything doing so. Add more RAM while your at it.
http://eshop.macsales.com/installvideos/
As you know Mac's are made by hand by young Chinese women working 12 hour shifts performing the same function every 7 seconds for only $1.20 a hour. They live 7 to a box room and have to pay 70¢ a meal.
All in all I would say they are very tired, and it's possilbe a few defects made it to your machine.

Will the fans speed up sooner on a MBP 13" vs a MBA?

Hi there, I am trying to find out which model can handle playing 720P video better when out it getting too hot cause the fans to speed up and become noise. Either the 2011 MBP 13" or 2010 MBA 13".
Thanks for any input

curtijb wrote:
Thanks for the quick reply, I have always been a fan of microsoft until 2008 when it crashed twice in one month, then I quickly became a fan of Apple, I have not yet learned all of the in's and out's of OS X 10.6.8 as I had with Windows XP, with all of the constant maintenance I had to do on it, I had plenty of time to learn. I like the "turn it on and run with it" function of OS X, and in the three years I've had macs I've done very little maintenance to them. I say "macs" because thanks to apple's OS X reliability I can afford the time now to own more than one computer, I have 5, one for every member of the family and it's not a chore to have one any more, there's no way I could keep my sanity if everyone of my macs were windows computers. Anyway, I was just poking around on mine and noticed some stuff that didn't look "XP right" so I asked. The info on the hard drive was from the "right click" on the "Mac hard drive" icon and the "get info" tab, it shows actual 639.66 GB total capacity, 112.26 GB available, and 527.4 GB used and the activity monitor still shows VM size as 137.91 GB, I don't know why?.?.. My XP laptop shows only 4 GB of VM used after I set it at that amount from the varying amount it normally used. I was just comparing the two, which I should not have done... Thanks..
I truly understand about the time issue.
Get info HD space available should be correct, and does not include VM.
I do not know the mechanism that OS X uses for setting VM, but I agree that it seems odd to have it set for more than the available HD space. I suspect if it ever had to actually use that much VM, it would "realize" that and adjust it.

Will the fans speed up sooner on a MBP 13" or a MBA?

Hi there, I am trying to find out which model can handle playing 720P video better when out it getting too hot cause the fans to speed up and become noise. Either the 2011 MBP 13" or 2010 MBA 13".
Thanks for any input

curtijb wrote:
Thanks for the quick reply, I have always been a fan of microsoft until 2008 when it crashed twice in one month, then I quickly became a fan of Apple, I have not yet learned all of the in's and out's of OS X 10.6.8 as I had with Windows XP, with all of the constant maintenance I had to do on it, I had plenty of time to learn. I like the "turn it on and run with it" function of OS X, and in the three years I've had macs I've done very little maintenance to them. I say "macs" because thanks to apple's OS X reliability I can afford the time now to own more than one computer, I have 5, one for every member of the family and it's not a chore to have one any more, there's no way I could keep my sanity if everyone of my macs were windows computers. Anyway, I was just poking around on mine and noticed some stuff that didn't look "XP right" so I asked. The info on the hard drive was from the "right click" on the "Mac hard drive" icon and the "get info" tab, it shows actual 639.66 GB total capacity, 112.26 GB available, and 527.4 GB used and the activity monitor still shows VM size as 137.91 GB, I don't know why?.?.. My XP laptop shows only 4 GB of VM used after I set it at that amount from the varying amount it normally used. I was just comparing the two, which I should not have done... Thanks..
I truly understand about the time issue.
Get info HD space available should be correct, and does not include VM.
I do not know the mechanism that OS X uses for setting VM, but I agree that it seems odd to have it set for more than the available HD space. I suspect if it ever had to actually use that much VM, it would "realize" that and adjust it.

Should the removeable fan assembly fans be spinning?

10 Days ago my 2.5 GHz Quad Power Mac G5 froze and I had to cut the power. Upon trying to turn it back on, it wouldn't power up so I brough it to Apple for repair.
A few days ago I was told the logic board had been replaced but the problem wasn't totally fixed and they were awaiting another part as the problem was not totally solved. I picked it up today to find only the power supply had been replaced. Got it home, plugged it in, and there wasn't any video and after a little while some (all?) fans switched to running at full speed. It was very loud.
Brought it back and it was immediately looked at. Initially everything was fine but thankfully after a while the video got flakey. They replaced the video card and I brought it back home.
The good news is that at the moment it's working however I happened to notice that the fan assembly fans aren't spinning. Hardware Monitor reports activity for all the fans it's monitoring so this must be two it can't. I am speaking of the assembly that one would pull out to replace RAM and/or reset the PMU. I called the Apple store and spoke with the tech who said sometimes they don't spin at all and not to worry.
Well, I'm a little worried. If anyone has a current model G5 I'd appreciate if you could check your fans and tell me what you see. You can shine a flashlight through the front grill or pop open the side panel. I don't know if they used to spin and I don't know if they are intake or exhaust fans. The two exhaust fans at the back of the case seem to be working as does the video card fan.
Thanks.

By "DP2" I guess I was really saying, "I don't have a quad, which is liquid-cooled, and therefore may have different parameters for the fan behaviour than this Rev.A Dual-Processor 2GHz, (as opposed to Dual-Core 2GHz) and that said, this is the best answer I can come up with". We try to help.
Anyway... the fans in this G5 "DP2"(but maybe not the quad) are:
2 PSU fans - at the front, behind the silver grille, below the lower internal metal plate, inaccessible, not reported on by HM, presumably running at a constant speed
Next up, at the front, beside the puny internal speaker, is what HM calls the "PCI Slot Fan"(expansion slots), (currently, usually, running at 35%)
Moving to the back of the G5, at the top, with a silver wire guard, in front of the hard drives, is what HM calls the "Drive Bay" fan (currently, usually, running at 1000RPM)
Beside this Drive Bay fan, in a grey plastic housing, at 90deg, is what HM calls the "Main Logic Board Backside" (currently, usually, running at 20%) [this pulls air over the back of the main logic board, through the Memory Controller Heatsink]
Then, behind the CPU heat-sinks, at the very back, are the two fans that HM calls "CPU A (&B) Exhaust Fan" (speed very variable - "Specified Upper Limit - 3200 RPM", "Specified Lower Limit - 300 RPM")
In front of the CPU heat-sinks, the two fans that you are interested in, in a removable sliding plastic housing, which HM calls ""CPU A (&B) Intake Fan" (speed very variable - Limits as for Exhaust)
Just discovered, somewhat late in the day perhaps, that while HM (hopefully) reports actual temperatures from the various sensors around the G5, the fan speeds reported are not the actual speed of the fans, but the speed at which they are being instructed to spin by OS X. This could be verified by tilting the clear plastic deflector panel outwards, but keeping the locator pegs in place, and withdrawing the sliding "CPU Intake Fan" housing from the connector; the fans will stop - but HM will continue to report the OS X-instructed fan speeds.
From your description it sounds as though the sensor identifiers that HM is picking up from the quad are different(to the "DP2") and also it's just possible that HM is not fully optimised for either the hardware and/or OS X 10.4.6. (HM is at v.3.4 (March 2, 2006) and so should be quad-aware)
Anyway... "bottom line" - judging by this "DP2" and a quad sample of one(thanks KentZ!), your "CPU Intake Fans" probably should be turning all the time. As yours don't - it's possible your quad may have a different, but appropriate, Thermal Calibration.
If you load up the processors and observe the fans through the clear plastic deflector panel and they still never spin, (and also HM reports they should be) you must surely have either a bad connection to the fans or faulty fans. If they both never move, it would seem likely it's a bad connection.
Hope some of this helps. Post again if it doesn't.
Of course, a few more quad users' experiences (with 10.4.6)would be even better...

I have a load noise from what sounds like the fan. MBP 15" 2009

My MBP 15" makes a grinding sound that will go away and then come back. If it is the fan, how difficult is this to have replaced?

13 screws. 10 for the bottom pan and 3 for the fan. Takes 3 screws longer than upgrading the RAM, with the advantage that the fan is not static-sensitive.
If one fan is bad, the other will follow shortly thereafter. Under warranty, Apple always changes both, you should follow suit. www.ifixit.com has the procedure and the parts you need.
For diagnosing if it IS the fan, use an Old Mechanic's Trick: get a short, thin metal rod. Place one end against the bony area right in front of your good ear. Place the other end against various spots on the Mac to determine the nature of the sound and its exact location. Use iFixIt's photos to see which component is the noisemaker: on the 15" MBP there are 4 candidates: 2 fans, one HDD and one optical drive. No other moving parts inside.

Fan running constant at 6200rpm only when connected to the Power Adaptor!

My fans are runing constant at at 6200 rpm, the temperature is around 50 degrees Celsius.
No other processes running in the background Activity Monitor shows around 2-3 usage after reboot.
I did a reset of the SMC.
Funny thing is, if the MacBook is not connected to the Power Adaptor, running with the battery, the fan is running at normal speed between 1500 and 3000 (depending on what programs i use) and has the same temperature at around 50 degrees.
I am sure that it is not the Power Adaptor, i have two, one at the office and one at home, and the MacBook is only loud, connected to the Power Adaptor.
3 Year Extended Waranty just run out 3 weeks ago...
Any hints or ideas which part could be broken and should be replaced?
Is there some sort of Power Management Unit?

I did a reset of the SMC (see my first post). Did not help.
Actually i did everthing you can do, including a fresh install (10.5.6) and not updating to 10.5.7 (some had problems with their fans updating to 10.5.7), also a Harware check, safe boot, etc. Did not help at all. Now running again with 10.5.7.
I was wondering if there is a actual hardware part i can replace.
My stoneaged Powerbook had some sort of a circuit board that managed the chareging of the battery, etc. This board could be replaced.
Or do i have to accept it, that my MacBook believes to be a helicopter now.

Exasperating: the issues of a mbp (l '08) | fan control vs display i.a.

I'm going to go crazy over this. My MBP (Late 2008) is producing one issue after another and they start to heap. Gradually, I don't know where I'm off anymore. The supportline, naturally, doesn't have a clue either and my good old buddy has already been in repair about a month ago, when they changed the logic board.
For once, the fans spin almost insanely at a speed of 6208 rpm, what makes the MBP not really a treat for the ears and the battery is most likely affected, too. That can neither be healthy nor be correct. Most of the times, what I can't clearly understand, it helps to hold the device at a slant for about half a minute. Then it calms down, what doesn't last for long if at all.
On the other hand, the MBP says good bye about five times a day (sometimes more, sometimes less and, above all, without any apparent reason), as it just goes into the standby mode and, straightly following, without an input, awakes again.
By the way, the loudspeakers crunch and crack latterly, as soon as you "turn" the music a little tiny bit louder and, also, the green LED goes out all the time but only at full load. This, being seen relatively, bothers me the least. Now and then it likes to hang itself up, too, when it does not react at any input at all. Then it's time to take off the power supply.
I just don't comprehend a thing. What would you recommend? Maybe anyone with the same deplorable story here? Within that price category, I got to say, I am expecting something else. However, it has been a great experience up to now and I don't want to miss out on such a great product, which it absolutely is - as long as it works the way it should.
In hope and with greetings,
sorry for my bad English,
Daniel

The problem is that I'm kind of reliant on my MBP for school and, as I've experienced it before, it usually takes about two weeks to get it back.
Could it be that, at least in case of the issue about the sudden standby, a RAM module is the cause? I opine that it mostly happens when the RAM is almost written on to a point where it is virtually full.
Any ideas, guys?

MBP - Should the fan be constant?

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