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Level 1

5 points

iMac fans run loud after hard drive replacement

I have replaced a faulty hard drive with the same make and modle, but a little bit larger capacity hard drive. While I had my iMac open, I had used canned air to "clean" the fans because they were covered in dust. After I brought my computer up, the fans began running so loud that you can hear from a different room. Everything seems to check out okay, and working properly. Any ideas what could it be?

iMac (21.5-inch Mid 2010), OS X Mountain Lion (10.8.3)

Posted on Apr 21, 2013 12:16 PM

Best reply

blimylimey

Level 1

4 points

Posted on Jan 5, 2017 6:43 PM

I had this problem after installing an SSD drive in place of the original HDD my 2011 iMac 27" I installed this free solution and it worked like a champ - I selected SMART mode.

http://exirion.net/ssdfanctrl/

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22 replies

den.thed

Level 9

77,302 points

Apr 21, 2013 2:17 PM in response to KriNor

You will need to use the Application Install Disc 2 that came with your iMac.

Msarpong

Level 1

0 points

Jun 6, 2014 6:10 AM in response to BDAqua

Thank you.. Had the same problem but its working fine now!!

MDJCM

Level 1

4 points

Jul 12, 2015 4:13 PM in response to BDAqua

BDAqua wrote:

HDD Fan Control

HDD Fan Control works to fix this issue by reading the drives internal temperature using the S.M.A.R.T protocol and set the fans actual speed to a value good to protect the drive.  It runs at startup and continually to always control the fan correctly, prevent the loud fan noise and protect the drive from overheating

Instead of HDDFan Control, get the free SSDFan Control

http://exirion.net/ssdfanctrl/

Thanks, it's great those guys offer that for free. I will donate to them

5carlton

Level 1

0 points

Aug 19, 2015 7:58 AM in response to BDAqua

Perfect! Quick and easy fix. Thanks!

Oct 23, 2016 5:14 AM in response to KriNor

Just replaced my Western Digital HD with a new Toshiba. I had this same problem because the factory heat sensor did not fit my new faster HD. I found the Macs Fan Control 1.4.4 to be a better product that intalled easier and had better controls get it here http://www.crystalidea.com/macs-fan-control

Oct 23, 2016 5:53 AM in response to KriNor

Temp Sensor for 2009 iMacs,

https://eshop.macsales.com/item/OWC/DIDIMACHDD09/

The Mid 2011 has a different one...

Jun 5, 2017 10:29 AM in response to blimylimey

Is their any problem after installing SSD within iMac late 2013?

I am planning to integrate Samsung Evo 850 within my iMac so please help me, if you have noticed any problem.

iMac fans run loud after hard drive replacement