Macbook Pro - Fans running constantly

SimoneTemplar · Apr 18, 2011, 01:18 AM

Hi there. My Macbook Pro's fans are constantly running. It only started maybe a month or so ago. I have reset my PRAM, I have cleaned up the hard drive and a verified disc permissions. The thermal paste on my cpu's has been replaced. I have looked in the acitivity monitor, and it the green and yellow lines are spiking, but I don't know why. I do not see any stray activities happening. I haven't upgraded my software, so the setup hasn't changed. Any ideas?

mbp17xxx · Apr 18, 2011, 01:40 AM

what speed? it is always running at 2000

SimoneTemplar · Apr 18, 2011, 03:44 AM

How do I measure it? (Sorry if it's a dumb question).

simsaladimbamba · Apr 18, 2011, 03:48 AM

Have you tried an SMC reset yet?
Intel-based Macs: Resetting the System Management Controller (SMC)
To measure fan speed(s) and temperatures, use iStat Pro.
Btw, 2000RPM is the idle fan(s) speed.

jambobowron · Apr 18, 2011, 03:49 AM

Quote:

Originally Posted by SimoneTemplar

How do I measure it? (Sorry if it's a dumb question).

iStat Pro is a good widget which will tell you

Theres also SMC Fancontrol, which used to allow you to control it, but i havent used it in a while and i dont know if it still works

funwithamar · Apr 18, 2011, 03:54 AM

SMC work fine for me .

and did u mean that ur fans run constantly after u put ur mac to sleep ??

SimoneTemplar · Apr 18, 2011, 04:18 AM

Hi there. The fans are running at: Left: 6009rpm, Right: 5990rpm. I've done the SMC reset, nothing doing. And no, it's not when the Macbook is idle (asleep), but when I am working. Thanks for your responses.

mediasorcerer · Apr 18, 2011, 04:21 AM

what are you doing when they run at 6000 rpm mark? heavy editing,or light browsing etc,give us more info pls,
you may need to try reinstall of osx at the worst,although id start with a hardware test,can use install disc for this,google it.apple support forum has it too,

SimoneTemplar · Apr 18, 2011, 04:28 AM

It doesn't matter how many apps I'm running, it still runs at that speed. I will try reinstalling osx and give feedback.

Macsavvytech · Apr 18, 2011, 04:55 AM

Quote:

Originally Posted by SimoneTemplar

It doesn't matter how many apps I'm running, it still runs at that speed. I will try reinstalling osx and give feedback.

Considering your willing to do it i think reinstalling is probably a good idea

SimoneTemplar · Apr 18, 2011, 09:39 AM

I did the hardware test, and I got the following error:
4SNS/1/40000000:Th2H-128.00. I googled it and it seems to be the thermal sensor. Now to find myself a guru in SA that will fix it for me tomorrow (nearly impossible - normal quote time is 48 hours

), as in ASAP. Hold thumbs they have the part. Thanks for all your input. I really appreciate it. I learnt a lot.

scottgroovez · Apr 18, 2011, 09:45 AM

At what temperature do the fans start ramping up? Watching a flash video the CPU temps hit 80°C, but the fans are still at 2000RPM.

SimoneTemplar · Apr 18, 2011, 11:51 AM

The fans come on after about a minute after booting up cold. Temps are: 21 - HD, 37 - CPU, 20 - Airport, 21 - Enclosure base, 47 - GPU diode, 37 - GPU heatsink, 31 - Mem controller.

ViciousShadow21 · Apr 18, 2011, 11:57 AM

yea that's definitely not normal. if you can, take it to Apple.

SimoneTemplar · Apr 18, 2011, 12:01 PM

Quote:

Originally Posted by jambobowron

iStat Pro is a good widget which will tell you

Theres also SMC Fancontrol, which used to allow you to control it, but i havent used it in a while and i dont know if it still works

I downloaded SMCFancontrol 2.2.2, but the application does't open. I am running OS 10.5.8.

ViciousShadow21 · Apr 18, 2011, 12:02 PM

Quote:

Originally Posted by SimoneTemplar

I downloaded SMCFancontrol 2.2.2, but the application does't open. I am running OS 10.5.8.

try Fan Control

much better than SMC in my opinion

SimoneTemplar · Apr 18, 2011, 12:14 PM

Quote:

Originally Posted by ViciousShadow21

try Fan Control

much better than SMC in my opinion

I set the base speed to 1000RPM, Lower threshold to 40 degrees C and upper to 70 degrees C, and the fans are still churning. Am I doing it right?

ViciousShadow21 · Apr 18, 2011, 12:18 PM

Quote:

Originally Posted by SimoneTemplar

I set the base speed to 1000RPM, Lower threshold to 40 degrees C and upper to 70 degrees C, and the fans are still churning. Am I doing it right?

try my settings of 2700rpm fan speed, lower threshold of 45C, and upper threshold of 70C. that keeps my computer running at 30-40C when im just browsing and keeps it very silent.

SimoneTemplar · Apr 18, 2011, 12:33 PM

Quote:

Originally Posted by ViciousShadow21

try my settings of 2700rpm fan speed, lower threshold of 45C, and upper threshold of 70C. that keeps my computer running at 30-40C when im just browsing and keeps it very silent.

No, still nothing. I found apple core in SA, and I will be at their doorstep first thing in the morning, while they are still having their morning coffee.

ViciousShadow21 · Apr 18, 2011, 12:36 PM

Quote:

Originally Posted by SimoneTemplar

No, still nothing. I found apple core in SA, and I will be at their doorstep first thing in the morning, while they are still having their morning coffee.

i know that was probably a typo when you typed Apple Core but in a way that would be a great name for their retail stores!! haha

snaky69 · Apr 18, 2011, 12:38 PM

Quote:

Originally Posted by SimoneTemplar

No, still nothing. I found apple core in SA, and I will be at their doorstep first thing in the morning, while they are still having their morning coffee.

If your thermal sensor isn't working the fans will run at full speed to protect the computer from overheating since it doesn't know if it is overheating.

A misconnected thermal sensor cable or the sensor itself may be bad, it's cheap to replace and apple should be able to do it for you in a day or two.No amount of software tweaking like fan control and smc fan control will change that, don't bother.

SimoneTemplar · Apr 18, 2011, 12:48 PM

Quote:

Originally Posted by snaky69

If your thermal sensor isn't working the fans will run at full speed to protect the computer from overheating since it doesn't know if it is overheating.

A misconnected thermal sensor cable or the sensor itself may be bad, it's cheap to replace and apple should be able to do it for you in a day or two.No amount of software tweaking like fan control and smc fan control will change that, don't bother.

That makes sense. Okiedokie. Thanks.

SimoneTemplar · Apr 18, 2011, 12:49 PM

Quote:

Originally Posted by ViciousShadow21

i know that was probably a typo when you typed Apple Core but in a way that would be a great name for their retail stores!! haha

MWAHAHAHAHA!!! Ok, they are called "The Core Group", but it's obviously a pun on Apple. http://www.core.co.za/contact.php

ViciousShadow21 · Apr 18, 2011, 12:50 PM

Quote:

Originally Posted by SimoneTemplar

MWAHAHAHAHA!!! Ok, they are called "The Core Group", but it's obviously a pun on Apple. http://www.core.co.za/contact.php

oh i see haha. but i still think it'd be a great idea.

SimoneTemplar · Apr 20, 2011, 07:21 AM

Just to keep you updated. I took it to the technicians, and they reckon I must have the Logic Board replaced (R6000 - donations welcome). They say that the guy that replaced the thermal paste, damaged it. "Report: Fails, 3 sensors, machine has been opened before, found a screw just sat inside on top of logic board. 1 sensor was not attached at all, just taped up with insulation tape, 1 sensor slightly broken near dvd drive and 1 sensor broken next to fan." Went back to thermal paste guy, who opened it up and explained that he doesn't know what they are talking about. I saw the tape, but apparantly it's for something that isn't needed. So here I am, dumb looking girl, in the middle, and someone is trying to con me out of R6000 and my fans are still running like it's the end of the world.

Apr 18, 2011, 01:18 AM	#1
SimoneTemplar macrumors newbie Join Date: Apr 2011	Macbook Pro - Fans running constantly Hi there. My Macbook Pro's fans are constantly running. It only started maybe a month or so ago. I have reset my PRAM, I have cleaned up the hard drive and a verified disc permissions. The thermal paste on my cpu's has been replaced. I have looked in the acitivity monitor, and it the green and yellow lines are spiking, but I don't know why. I do not see any stray activities happening. I haven't upgraded my software, so the setup hasn't changed. Any ideas?
	0

Apr 18, 2011, 03:44 AM	#3
SimoneTemplar Thread Starter macrumors newbie Join Date: Apr 2011	Macbook Pro Fan How do I measure it? (Sorry if it's a dumb question).
	0

Apr 18, 2011, 03:48 AM	#4
simsaladimbamba macrumors Core Join Date: Nov 2010 Location: in front of it	Have you tried an SMC reset yet? Intel-based Macs: Resetting the System Management Controller (SMC) To measure fan speed(s) and temperatures, use iStat Pro. Btw, 2000RPM is the idle fan(s) speed. __________________ This is not amn attempt t write with two brokemn keybards
	0

Apr 18, 2011, 03:54 AM	#6
funwithamar macrumors regular Join Date: Dec 2008	SMC work fine for me . and did u mean that ur fans run constantly after u put ur mac to sleep ?? __________________ 13" MacbookPro Unibody 2.53gz, 4gb RAM, 250 Gb HD(late 2009) iPhone 2G @3.1.3 using unofficial carrier,Jailbroken(2007) iPhone 3gs @4.2.1 Jailbroken iPod shuffle 2Gb
	0

Apr 18, 2011, 04:18 AM	#7
SimoneTemplar Thread Starter macrumors newbie Join Date: Apr 2011	Macbook Pro Fans running constantly Hi there. The fans are running at: Left: 6009rpm, Right: 5990rpm. I've done the SMC reset, nothing doing. And no, it's not when the Macbook is idle (asleep), but when I am working. Thanks for your responses.
	0

Apr 18, 2011, 01:40 AM	#2
mbp17xxx macrumors member Join Date: Mar 2011	what speed? it is always running at 2000
	0

Apr 18, 2011, 04:21 AM	#8
mediasorcerer macrumors regular Join Date: Oct 2010	what are you doing when they run at 6000 rpm mark? heavy editing,or light browsing etc,give us more info pls, you may need to try reinstall of osx at the worst,although id start with a hardware test,can use install disc for this,google it.apple support forum has it too, __________________ 2.2-i7/15"- hi res glos,8ram,ip4,what more do u want?
	0

Apr 18, 2011, 04:28 AM	#9
SimoneTemplar Thread Starter macrumors newbie Join Date: Apr 2011	Macbook Pro Fans running constantly It doesn't matter how many apps I'm running, it still runs at that speed. I will try reinstalling osx and give feedback.
	0

Apr 18, 2011, 09:39 AM	#11
SimoneTemplar Thread Starter macrumors newbie Join Date: Apr 2011	Macbook Pro Fans running constantly I did the hardware test, and I got the following error: 4SNS/1/40000000:Th2H-128.00. I googled it and it seems to be the thermal sensor. Now to find myself a guru in SA that will fix it for me tomorrow (nearly impossible - normal quote time is 48 hours ), as in ASAP. Hold thumbs they have the part. Thanks for all your input. I really appreciate it. I learnt a lot.
	0

Apr 18, 2011, 09:45 AM	#12
scottgroovez macrumors regular Join Date: May 2010	At what temperature do the fans start ramping up? Watching a flash video the CPU temps hit 80°C, but the fans are still at 2000RPM.
	0

Apr 18, 2011, 11:51 AM	#13
SimoneTemplar Thread Starter macrumors newbie Join Date: Apr 2011	Macbook Pro Fans running constantly The fans come on after about a minute after booting up cold. Temps are: 21 - HD, 37 - CPU, 20 - Airport, 21 - Enclosure base, 47 - GPU diode, 37 - GPU heatsink, 31 - Mem controller.
	0

Apr 18, 2011, 11:57 AM	#14
ViciousShadow21 macrumors 68020 Join Date: Mar 2009 Location: To your left or right	yea that's definitely not normal. if you can, take it to Apple. __________________ MBP 15.4" 2.2GHz i7 8GB RAM W/27"ACD Black 16GB iPhone 4 MP 12-Core 2.93GHz, 1TB SSD, 4TB HDD, 64GB RAM, 2x ATI 5770's
	0

Apr 20, 2011, 07:21 AM	#25
SimoneTemplar Thread Starter macrumors newbie Join Date: Apr 2011	Macbook Pro Fans running constantly Just to keep you updated. I took it to the technicians, and they reckon I must have the Logic Board replaced (R6000 - donations welcome). They say that the guy that replaced the thermal paste, damaged it. "Report: Fails, 3 sensors, machine has been opened before, found a screw just sat inside on top of logic board. 1 sensor was not attached at all, just taped up with insulation tape, 1 sensor slightly broken near dvd drive and 1 sensor broken next to fan." Went back to thermal paste guy, who opened it up and explained that he doesn't know what they are talking about. I saw the tape, but apparantly it's for something that isn't needed. So here I am, dumb looking girl, in the middle, and someone is trying to con me out of R6000 and my fans are still running like it's the end of the world.
	0

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