MacBook Pro :: Fans Running At Full Speed / Heat Sensors Are Fine?
Apr 14, 2010
So today I opened up my MBP to clean it out and stuff (it had a ton of dust... A wall of it had built up where the fans blow out)All is fine and dandy now except for one thing. Since I don't want to open my case up for the second time today (right fan wasn't plugged in all the way first time I started it up... oops x( ) I'm asking here since everything else seems to be fine.
What I did:
Opened everything up all the way down to the heatsink.Applied correct amount of Thermal paste.plugged everything back in (right fan wasn't perfect at first, but fixed and stupidly didn't double check everything else while I was in there)
And now both fans are running at 6k (full) constantly. I tried resetting PRAM and SMC with no luck. I'm about to grab my disk 1 and run the diagnosis to see if that turns up anything.Are there any plugs that I might have accidentally not plugged in all the way or at all that would cause this? Also any other suggestions if everything is plugged in correctly?
MacBook Pro 2,2 15.4" late '06
10.6.3
C2D 2.33GHz
2GB Ram
Also, I have iStat Menu. No apps using all my CPU (Mostly <10% usage right now) and temp is mostly <40c right now. All temps have a temperature so I'm assuming all heat sensors are fine.On a great note: My computer is so much cooler now! Even before this at 6k rpm I'd get down to MAYBE 45c if I was lucky.I also have Fan Control installed and it's not having any effect
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Mar 27, 2009
Brand new 2009 octo, with the 2.2x ghz CPUs. Turn it on, start NO apps. Let it sit idle. Within a few minutes the fans ramp up to FULL jet engine speed. I can't hear people on the telephone. And never stop. Let me reiterate that I am running NO apps. My load averages are in the zeros.
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May 18, 2012
Machine: iMac intel core 2Â 2.66Ghz Model A1224
sn# YM******ZE3Â
Ran the hardware test by pressing 'D' key. hardware test came back with error :4SN/1/40000000: T00P-65.250Â
I am guessing some sort of temp sensor might need replacing.Â
Info:
iMac
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Feb 28, 2009
I've got a little problem with my iMac 24" 2.8 GHz Nvidia Geforce 8800GS 500GB. When I start it up, the fans start blowing at full speed. I checked the apple support page for support and found my problem with all the symptoms being correct. The support said I had to reset the SMC by shutting down the iMac, then removing the power cord and all the other one's, wait 15 seconds and then put the power cord and the other one's in respectively. I did this almost 10 times, but my iMac still won't stop making those annoying noises. Maybe it has to do with the SMC fancontrol app my brother installed lately.
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Oct 9, 2010
My CPU heat sink fans always run above 2000 rpm. Is that avoidable?
Can I do something about that to drop the speed and get rid of the noise?
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Nov 4, 2010
I've got this weird problem with my late 07 SR 17'' MBP, after I plug in the Magsafe charger the fans start spining and in like 3 minutes they reach 6000 rpm (both of them) and stay that way until it's finishing the charge. I did the same exact tasks with my laptop charged and plugged in, and the fans stay around 2000 rpm, as opposed to when it's charging staying at full speed.
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Jan 5, 2009
I was just wondering if it's okay to run the MacBook with the max fan speed (6200RPM) at all times? It's really hot nowadays and my MacBook runs at about 60 degrees Celsius idle. If I run a few CPU intensive apps, the temperature usually rises to 70-80 degrees. This is with the fan running at max speed. So what I want to ask is, will it be okay to keep the fans running at max speed at all times? I'm going to get a notebook cooler soon so that should help with lowering the temperatures a little lower.
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Feb 16, 2009
If you are watching HD video, CBS.com HD shows for insteance.What speed are your fans running then and what temperature does your MBA Rev B have?
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Jun 2, 2014
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?
Info:
MacBook Pro with Retina display, OS X Mavericks (10.9.3)
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Sep 3, 2010
My step-son works for a company that uses a variety of computers in their test dept. and when they upgraded the test equipment they gave the old stuff to employees.My step-son is a dyed-in-the-wool PC guy who doesn't care for Macs so when he saw a G5 PPC sitting there he took it home and gave it to me.
It's a 2.0 GHz dual-processor with 8x AGP video. I checked it out and the only thing "wrong" with it is that someone has set up the fans, all of them, to run full-speed all the time.First, how did they most likely do that and, second, how can I return the fans to their normal operation. This can't be good for the computer and it's so loud and annoying that I'd rather use my G4.It's a great computer otherwise, I hope they didn't do something permanent that would require a new motherboard, that's not in my budget.
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Jun 25, 2010
My PCI bay fan is running at full speed no matter what. The temperature sensor reads correctly in OS X, so I don't think it's a bad sensor.
Is there any way to set the fan speed manually, say in openfirmware?
It's a 1.8 DP June '04; I've ran ASD 2.5.8 to calibrate and test the mobo, which passed.
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Apr 8, 2012
My Mac OS X as soon as I turn it on the fan is running. I have already gone thru the reset SMC . Could I have too much stuff in it?
Info:iMac, Mac OS X (10.5.8), 2.66 GHz Intel Core 2 Duo 4GB 1067
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May 9, 2012
I recently picked up a 17" 2009 unibody MacBook Pro with Intel Core 2 Duo 2.8ghz, 4gb RAM, SuperDrive and a Samsung 1TB hard drive. The system did not come with the original hard drive and I don't have any other hard drives to test and verify that the new larger hard drive is the cause. I have tried a clean install of Snow Leopard, Lion and even Mountain Lion but no matter what my fans always running at max speed (5k+ RPM). I have looked at iStat and the temps of any of the components in the machine never show more than 42*C so the fans should never be running at full blast. Oddly enough smcFanControl shows 0* temp but fan speds for both left and right are always 5.5k+ and very noisy. Using HDD Fan Control I am able to get at least the right fan to run at a controlable speed but its silence is drowned out by the left fan that still runs on full blast. I have already done multiple SMC resets and PRAM resets with no change in the condition. These noisey fans are driving me insane! I have run every available update as well. Is there a chance that the hard drive or something elses temp not being supported or detectable by OSX is causing the fans to default to the fail safe constant high speed?!
Info:
MacBook
Pro, Mac OS X (10.7.3), 2.8GHz Core2Duo
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Oct 2, 2006
I have a 1.8Ghz dual processor G5, 1GB Ram, 80GB HDD, with OS X 10.4.7 installed and all current updates, and today I was working on it and the fans on it slowly started speeding up, and then everything on the screen disappeared and a mesage appeared stating that a restart was required. After restarting everything seems to be working fine, but I'd like to know if this is a fluke or if I have a serious problem.
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Nov 5, 2009
I have a 24" mid-2009 iMac, bought in June. It's behaving oddly over the past week or so. It fails to wake on sleep on the first attempt, but always succeeds on the second. When I say fails though, I mean that it *does* wake up, but goes back to sleep again after a few seconds. The other issue happened today, when I woke it up, in a cold room, the fans started up at full speed (I assume). It sounded terrifying to me as my iMac has never got that loud - not even playing games. I restarted it and it was the same, but died down after a while.
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Mar 17, 2012
My iMac (intel core duo) after a hard drive replacement seems to be running the fans at a high rate of speed. Usually just a few minuets after startup. Before the upgrade they were almost silent and now they are very noticeable. I need to get taken care of or just a result of installing a larget hard drive?Â
Info:
IMac Intel Core Duo, Mac OS X (10.4.10), Ipod 30 Gig, BMW IPod Integration, .mac
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Feb 8, 2007
I have a MacPro 2.66 quad-core intel. 4gb ram. I have a hard-drive from my old Powermac that i upgraded to 10.5.5 for this computer. Everytime I put my computer to sleep, and then wake it back up. The fans spin up to maximum speed and all the fans are running really loud and then after about a minute all spin to normal speed.
I don't have any other flaws except for this. Why could this be?
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Nov 14, 2009
I've noticed that occasionally my IR sensor stops working, and no longer responds to changing the volume, skipping the track in iTunes, etc. It can be resolved by going into Security prefs, disabling and re-enabling the IR sensor. This is annoying, however, and I'm wondering if it's a known issue that might be fixed.
I noticed that when you disable and re-enable the IR sensor, the last few remote button pushes you made while it was broken come through in a burst.
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Mar 4, 2010
20'' Aluminium iMac, 2.4ghz, 4GB RAM, 2133.
My internal hard drive recently fatally crashed out so I replaced the hard drive with a nice big 1TB one. Since i put the machine back together and reinstalled OSX (Leopard 10.5), this fan has been going constantly:
The one you can see at the bottom there. I guess its the CPU
I installed the iStat widget to check what the temperatures were like inside. I got this back:
By this point I'm assuming the sensor/s is either disconnected or something worse, and the fan is being clever and safe by running all the time. So I open it up and check the connections which seem to be fine, but i give them a blow etc and THEN I got a reading on the temps, and the fan was working nice and calm. I closed her up, and typically, the problem started again.
I assumed that the case had something to do with it, pressing on the sensor or something. Which it wasn't.
I did all the things I did the first time again, but this time with no temperature readings at any stage.
Now I'm not sure what to do. The fan is running at full speed all the time and I have no temperature readings, save the two shown above. I also tried the application 'Temperature Monitor' with the same results.
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Jun 18, 2010
Just on a curious thought, anybody's MBPs experiencing heat issues that cause the fans to kick in so much that they power off instantly? And another question, if you do feel heat, where is it the most intense?
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Jan 7, 2010
I generally get about 700kbs download speed, which is what my ISP (Sky uk) tells me I SHOULD have, but they also tell me that my router upload speed should be similar and it's not anywhere close to it.
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Jun 16, 2009
Does it hurt the computer... If the computer is doing something (watching flash, playing a game) that turns on the fan full speed;Does this hurt the computer? There are a few games I like to play and they turn on the fan at full speed (computer gets hot too, on the bottom.)
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Apr 29, 2009
I have got the 2.4ghz aluminium macbook, and I upgraded the ram to 4GB about a 2 months back. I have always felt that my macbook is slower now than before the upgrade(which is strange), but recently the situation became worst. My macbook would randomly heats up very quickly, iStats pro would show me that i only have 1-10MB of free memory, my fan would be running on 6200rpm. response rate would be much slower, and circle of rainbow also occurs much more often.I get panic whenever this happens(i have only got my macbook for 5-months), so when that happens i usually try to quit those application that i am not using like mail, safari, iwork 09 and etc. It didn't really help much(or maybe not at all) until at some point(around about 30-45mins) the systems automatically cools down, reduce fan speed and etc but similar problem would happen again in 30mins.
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Aug 22, 2009
I have a late 2007 macbook pro and recently the fans have been going at extremely high speeds without the MBP being hot at all. I have SMCFanControl and iStat Pro and both of them said my MBP's temperature was around 55C though the fans were going between 4000 and 6000 RPM, I also checked the activity monitor for high CPU usage but nothing high there. I turned my MBP off for 5 minutes with a fan blowing on it just incase it was hot but when I turned it back on the fans immediately jumped back up to 6000 RPM. They're back to normal now but I assume it will happen again. Anyone know what's wrong?
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May 19, 2012
The fans of my mid-2010 quad core mac pro speed up to sound like jet engines. The machine can be running all day or for less than an hour. The number of applications in use range from 1 - 5. The activity monitor always shows the finder using the most resources. About this mac says all of the ram is good. The hardware test says all if fine. I have reset the machine by unplugging it for few minutes.
There is one thing that is problematic and I do not know if affects the fans - the permissions are not correct. When I run repair permissions it returns a large number of 'acl found but not expected' and frequently changes the permissions so only the system can 'read or write'. Then I have to manually change them to what I need.
Info:
Mac Pro Quad Core 2.88, Mac OS X (10.6.8)
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Mar 31, 2012
I've bought a brand new MPB 15'' about 2 days ago.Â
Every time I put it in sleep mode (by closing lid, or manually choose Sleep from menu) it goes to sleep (I check it by front indicator), but FANS STARTING TO ROTATE AT MAX SPEED (Sorry for CAPS)Â
I've already reseted the PRAM, reseted the SMC. Turn off any sharing. But that did not help.
Info:
MacBook Pro, Mac OS X (10.7.3)
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Jun 20, 2014
My Early 2008 MacBookPro 2.40 ghz 4 gb Ram OSX Mavericks machine's keyboard backlight off and fans run at high speed; it seems an exact smc resetting problem.
So i tried the 2 ways of SMC restting procedure; both battery you can move and not, but nothings changed on the situation..
On the way for removable battery; nothing changed but on the way for umremovable battery way; keyboard backlight flashes and gone, but fans are at high speed not changed. So nothing changed.
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Jun 18, 2010
I bought Fusion and ran Windows 7 in a VM - within a few minutes my MBP (17" i7 4GB RAM) was wayyyyy hot (left side bottom/top). I mean, I am a little concerned with how hot it gets. I'll look into smcFancontrol but want to know if upgrading to 8GB RAM will do the trick as well?
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May 14, 2012
My Macbook Pro (13", early 2011, Core i5 @ 2.3) started to behave weird, its fan (only the exhaust one, since it's a 13" Macbook Pro with the Intel HD integrated graphics) is running at top speed (6200-6208 rpms) with no reason at all. No system processes consuming high CPU, just idling.There's a twist to this issue, though. It only does it when I open the lid more than 90 degrees. If I get it back the fan returns to normal functioning.What I did:checked the temperature sensor values, they are finechecked for crazy background tasks, there are none, CPU usage is at max 7%it does the same thing even in safe modereset PRAMreset SMCreinstalled OS X (Lion). Updated to 10.7.4searched every discussion I could find on this matter.
The difference between this issue and others I encountered along the way is the lid opening thing.Does anyone know if getting the lid past the 90 degree mark triggers anything?The other theory I have is that there's some dust blocking the intake and when the lid is opened wide, the air is somewhat obstructed by the bottom of it.
Info:
MacBook
Pro, Mac OS X (10.7.4)
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Dec 20, 2007
I am interested in adding a webcam to my desktop Imac (power pc)- Isight is no longer available- an option that I found is the Ecamm Image- but apparently it is USB and not firewire and it will only run with high speed usb- how do I know which type is on my computer? I checked system profiler but quite frankly wasn't sure of the designations.. does anyone have any experience with this camera, by the way? is USB 2.0 by definition "High Speed"?
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