IMac :: Fans Spinning At 3500 RPMs Constantly / Not Slowing Down By Any Means
Feb 4, 2009
My parents have an older 20-inch white Intel iMac that has run great through the years. But about a week ago it just started spinning the CPU fans up to 3500-4000 RPMs and it won't bring them back down. Istat shows that the CPU temp is around 90 degrees and the computer remains cool to the touch.
So it isn't overheating. My parents keep it off most of the time because they don't want to ruin it, but they're planning on using it in their business they're trying to start up. We've done some web searches and nothing seems to fix it.
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Aug 15, 2010
I'm prepping my Macbook Pro for daily usage now and moving around all my documents, etc.What's the normal fan speed that you guys usually use during your normal daily usages and what temperature do you expect when you are using it everyday?Would the fan wear out if I set it to 3500RPM indefinitely when I use it using SMC Fan Control?
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Apr 12, 2012
My fans have always been running at 2000 RPMs. I downloaded an app from the mac app store which caused the CPU to overheat, and in order to control this I read that it was wise to download smcFanControl. I downloaded this and added 2 settings, 2.4K RPMs and 2.8K RPMs. This worked to cool down my laptop, and once I realized that my CPU is at 36 degrees Celsius, I set the fans back to the default settings at 2000 RPMs. Now, my fans are constantly running at this speed according to smcFanControl and iStat. My core is cool, not even warm, yet all I can hear are the fans spinning fast to push hot air out of it, when there is none (I've put my ear to it to hear and feel the heat, there is no heat coming out).
I've had this laptop for less than 24 hours, it's a:
15' Macbook Pro late 2011
Intel Core i7 Quad Core 2.4gHz
7200RPM 750GB HDD
Also, this was not occurring prior to downloading smcFanControl (I've turned it off, deleted it, nothing works) - Even after turning off the laptop, the fans stopped, automatically after turning the laptop on the fans came back on. Some extra information: When I put my ear to the bottom of the laptop, it sounds like a vibration.
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Oct 6, 2009
I have the new unibody 17 MBP 3.06. The unit doesn't get hot and I love it, but my fans run at a constant 3300-3500 rpm (istat and SMC fan control). The lowest setting on SMC is 1000 rpm I wanted it to run around 2000, but when I set it up the fans rev down then 1 second after revving down to the slower speed run right back to 3500 area. Is this normal? I thought SMC was to override the apple settings. Just 2700 rpm's makes a sound difference on my MBP. I was in a rush and forgot to mention that I just added SMC. I have had the computer for a month now and istat pro had it at 3500 rpm since I have gotten it and that is just surfing the net and at an idle. Since installing SMC Fan control didn't fix it I am wondering if I should take it in to an apple store or not?
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Apr 9, 2009
lately my macbook has been getting a bit noisy and hot the fans seem to kick on alot 3500-4500rpm range and @idle my CPU is ranging 68-75C (iStat), right now as im typing this she's at 77-80C. Functionality aside everything is pretty stable, including playing the occasional WoW.
Anyone else have any issues like this? I've booked a Genius Bar appointment just in case.
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Jul 8, 2007
What is wrong with this picture? The fans are running out of control constantly. This machine is sooo loud. The power supply was just replaced, which did little/nothing. Reset all ram/etc.
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Dec 13, 2009
I've just downgraded from my Mac Pro to my 09 Mac Mini, and whilst the transfer has been mainly painless there is one thing that is really irritating me.
I've got an SSD installed so the only noise the Mini makes is the fan, well what it's doing when I'm not doing much with the machine is the fan keeps spinning up for a fraction of a second then slowing back down.
Because it's the only noise it is really irritating. I wouldn't mind if it was spinning all the time, I'd get used to it then, but this constant up and down is really frustrating.
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Jan 19, 2009
My PowerMac's (G5 Dual 1.8GHz procs) fans seem to run at a solid 4k rpm's regardless of what I'm doing, even with CPU usage set to low. I've taken the whole machine apart, cleaning it with canned air and such, but the problem just won't leave me be. The air coming out of the machine is ice cold, and the temperature readings I'm getting are about 86 degrees F for the CPU's and 70 for the HDD, so I'm not sure what gives.. Slot and Backside fans are running at 255 rpm, but the others are all 4k.
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Apr 21, 2012
I've just bought a second hand macbook pro, the battery is dead which is easy to replace i guess but worse the fans are running constantly at around 6000rpm.I've tried resetting the smc and pram but that hasn't helped.I tried to run the hardware diagnosis but that freezes when it gets up to testing the logic board and i have to pull the power adapter to turn machine off.I only have the second of the two install dvds and machine is running os x 10.5.8
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Mar 20, 2012
The fans on my 3.06 GHz Intel Core i3 imac run almost constantly and at high speeds. I have reset the SMC, fixed permission, and tested the disk. Also, I downloaded SMC Fan Control. Here are my current readings will the fans are blasting:
ODD: 994
HDD: 5577
CPU: 1200
Temp: 44C
Info:
iMac, Mac OS X (10.7.3)
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Jul 12, 2009
Ok, so I got a Mac Pro I believe it's a 2007 model or some where along those lines, it's 2.63 ghz quad core.None the less here is what happened.Came home one day to find my USB not working at all it would charge but not connect to the computer.
So I reboot still not working. I turn it off and take a look inside nothing, reseat the ram just to be sure. Ok, turn it on, nothing happens, no screen I hear the fans spinning and the hd spinning.So I take out each card and try one by one to see if any one them are causing a problem nope.As a side note the computer light comes on, but if I like the power button it just shuts right off. Also the computer power up when I put the plug in the back without pressing the on button.
today i took the computer apart to see if I could find any blown caps... hmm nope. Went to the local computer store but they don't test for anything mac so he said I could try out their power tester nothing would light up on the tester but it may have been wrong pins. CD drive showed all voltages but 3.3v.Now im not sure if it's the MOBO or the Power supply is there any way to test this out? or if I toast something else? I have no clue.
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May 25, 2009
I opened up my G5, to install more RAM, and saw that one of the hard drives was unplugged (I just got it used), and so I connected that, blew some compressed air into it, installed the RAM and closed 'er up. Then I tried to power on and it didn't work (No Chimes, just fans spinning, no video, not even the start up chime). So, I disconnected the hard drive, took out the RAM I put in, and closed it, and it still doesn't boot. Same thing. My keyboard is wireless, but the wireless dongle thing doesn't get any power when it is "powered on". The fans are spinning all the time. (Except when it's powered off, obviously)
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Jun 23, 2009
i recently got a 13" mbp, upgraded to a WD scorpio blue 500gb and 4gb crucial RAM. the annoying thing is that the WD HDD seems to always be spinning (randomly at different rates, never silent).
i feel that this is not only draining the battery, but it is also slightly obnoxious. is there any way to get the thing to stop spinning, or is that just what it does. I feel as though my past macbooks havent had this problem.
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Oct 18, 2007
My fans are constantly going on my g4 powerbook and the noise drives me nuts. I do all sorts of work - graphics (CS2), music recording, multimedia... but even when I am just not doing anything intensive the fans are on.
The fans are at full speed now and the temp reads 37C / 98F. I've used an icurve since I got the machine.I've put up with this noisy sound for a couple years now. One person said I need to clean the air vents, like dust is causing the noise. Does anyone know about this?
its a g4 titanium powerbook 867 mhz 768 RAM (ancient I know but it still works!)
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Jun 18, 2009
I noticed that my GPUs fans (either ATI 3870HD or 4870) in my MP 1,1 are considerably louder nonewithstanding nothing CPU/ GPU taxing is running. Anyone else noticed this? Are the GPU drivers not finished yet or is it due SL keeping them under load for Open CL/ Grand Central?
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Sep 9, 2009
Both my left and right fans are constantly running at 2000 rpm. They have not done this before, but over the last week I have noticed this issue. Heat does not seem to be an issue in triggering the fans. I'm so confused on why they're are constantly on now.No CPU hogging processes or high temperatures.
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Jul 31, 2009
For the last couple of days my fans have been going crazy, spinning at 6200RPM non stop. I installed fan control last month but the issues just started. When I open up fan control it says my fan should be spinning at 4000RPM. I had smcFanControl installed before and its still installed. My bluetooth module over heated yesterday so I used SMC to rev up the fans. I don't know if that is the issue because it isn't running now. I'll try uninstalling that now.
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Aug 13, 2010
On the Mac partition of my hard drive, the hard drive spins every so often. Annoying, but manageable. on my Windows partition, it spins constantly, even when all I am doing is browsing the internet.
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Mar 12, 2012
I have a 27' iMac with internal SDD and HDD. I really like how it is so quiet. It worked really well out of the box though had a glitch which required a reinstall of Lion. Now the HDD is constantly spinning even if there are no apps open that require r/w access to the HDD. I've used pmset to turn it off after 1 min but I'd rather it didn't come on at all unless i send something to/from the HDD. Any ideas how to configure this correctly?
Info:iMac, Mac OS X (10.7.3), 27" i7 SDD HDD
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Oct 24, 2009
I need the thoughts and advice from your seasoned Mac people - I have 2 MBP's - 1 15" aluminum, one last years model 17" Unibody (with Black around screen). The 15 has run great since day one. The 17" was ok, but now is locking up and causing me to reboot, fans seem to run on high all the time, and it is very slow to react while using the OS, it gets worse until it locks up. I have upgrade to Snow Leopard thinking that that might fix it, but it has not.
When I got it, I restored from the back up of my 15" using carbon copy cloner. I only imported users and data such as pictures and music. Do you guys think that this is a hardware issue or a or should I back all my stuff up and then blow everything away and reinstall from the ground up with a fresh SL install?
When I called apple they tried to sell me apple care and told me that it was out of the full warranty and if I send it I would to pay for what was not under warranty. SO I am hoping that someone has seen this and has a fix that I can do without having to take it in.
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Oct 19, 2007
I've had my G5 for a couple years. I keep it under my desk, so I don't hear much from it, but I have noticed that the hard drive is constantly spinning. It's been doing it for as long as I can remember. Any ideas why, and whether I should expect a failure because of it?
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May 24, 2010
I have a macbook 2.1ghz with OSX 10.5.8 running with 4gb of 667mhz DDR2
Recently I have been getting spinning beach balls of death on a constant biases. They come when I try to open web pages such as [URL]... ANYTHING actually. They come when I try to open applications, they seem to come when I try to do almost anything. I cannot force quit when they come. I have tried waiting for them to go away, sometimes up to an hour and nothing happens. They have come when I try to open utilities to try to figure out what is wrong. They come in safe mode.
I freed up hard disk space, over 60 gigs of the 120 gig hard drive. NOTHING.
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May 26, 2012
Since last night's Mac OS upgrade (I use Lion), the cursor in Safari is a constantly spinning beachball. How can I turn it back into an arrow? Safari is still working, by the way--but the beachball keeps spinning.
Info:
iMac, Mac OS X (10.7.4)
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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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Feb 16, 2012
Exactly the same issue on Macbook Air and new iMac both running Safari 5.1 and Lion 10.7.3
When I open Safari it does not open a page, it just shows a spinning beach ball and shortly after the fans kick in and the activity monitor shows 1 webprocess at 99 - 100% or sometimes 2 web processes at 50/50% all coming from the User. When I inspect the process it says it's "Parent Process (Safari 450)"
When I quit safari the web processes stay at 100% and will only stop when I quit them in activity monitor. I have reset Safari but no joy. Firefox etc works fine. The only update I ran was a 1Password update but they say it's not them.
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Jun 15, 2012
The safari loading wheel is constantly spinning when facebook is open...Software is all up to date (The macbook is only 1 day old) and I've tried rebooting.
Info:MacBook Air (13-inch, Mid 2012), Mac OS X (10.7.4)
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Aug 7, 2009
My father owns one of the original G5s, so its power pc not intel. Today while browsing an excel spreadsheet he says part of the screen turned black, then the monitor shut off, then the monitor came back on but not video. Mean while the fans started spinning out of control. Now when he tries to turn it on, he gets power, but all that happens is the fans spinning faster and faster and faster until he turns it off. No video or anything. Just speeding fans. He fears the CPUs died since they control the fans. Any suggestions? He also says the fans were spinning unusually fast these last few days.
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Apr 20, 2010
Recently, my iMac (Intel Core) started to slow down the longer I use it. Applications take ages to launch. Sometimes even opening a folder takes a long time. I have to force quit more and more times. I also have to literally pull out the plug when it just hangs. this is especially bad when it wakes up after I put it to sleep mode.
Is this a RAM issue? I'm running on 4GB RAM.
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Mar 12, 2007
Does anyone have any tips to speed up an old iMac G4, 1ghz processor, 512mb of Ram and a hell of alot of applications and video files? (Running Tiger)The main problem is when i open video files and i have multiple numbers of programs open at once.
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Jan 20, 2009
Well im concerned that my imac is slowing down and is taking to long to boot-up, because when i first got him the imac was a bit faster. So i was thinking i should ask you guys for your boot-up duration before i reinstall Mac OS X. My MBP is also slowing down, don't know if im doing anything wrong so would love to know how long others boot-up lasts.
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