Why is my MacBook Pro's fan making a "rrrrrrrrrrrrrr" sound?

Hi


Lately my MacBook Pro's fan is making a "rrrrrrrrrrrrr" sound, and it is quite annoying and loud. Some of my friends think there's an issue with the fan, like maybe it's loose or something. I was wondering if anyone else had a problem like this, and if there's a solution to it. Please help. Thank you!

MacBook Pro, OS X Mavericks (10.9.1)

Posted on Dec 22, 2013 12:56 PM

Reply
5 replies

Dec 22, 2013 1:10 PM in response to Vasantthy

Perform a SMC rest:


http://support.apple.com/kb/ht3964


Run an Apple Hardware Test:


http://support.apple.com/kb/ht3964


Report any errors developed.


If there is no improvement with the SMC install istat menus:


http://bjango.com/mac/istatmenus/


Open Activity Monitor to ALL PROCESSES and set % CPU to display values from high to low.


Post Images of both when the fan is making the noise.


Ciao.

Dec 22, 2013 12:59 PM in response to Vasantthy



Is it making a buzzing or scraping noise?


If you only hear it in a quiet room, that is normal.

noisy fan reasons:


A: you notice it more in a quiet room (the typical case) which is normal, all is AOK


B: fuzz and dust has caked onto the blades causing the fan hub to get off balance and make a buzzing sound.


C: fan rotor is going bad and making a whirring or buzz noise (rare).


D: Fan is spinning up due to excess heat from gaming, heavy graphics (typical, all is OK)


A and D are normal


B and C are not.


Do you use it in a dusty area or where there is a lot of pet fuzz? Laptop fans act like little vacuum cleaners and take in dust etc. from the ambient air around them.


If B and C continue for a long time (B is just a cleaning), they eventually cause the fan to either seize and/or die.



Contact Apple for appt. to see about a free full diagnostic of your Macbook 😊



Dust bunnies

Your Macbook’s cooling system, including fan and rear vents pull cool air in from the back and (in the case of the Macbook pro) also from the left ports bringing this air around the processor, GPU, and heat sync and blow it out the back, as such your Macbook acts like a little vacuum cleaner of the air around you. If you use your notebook in a dusty area or around a lot of pet fur, this can quickly, even under seemingly ideal clean rooms, accumulate inside your notebook especially on the fan blades reducing its capacity for cooling and in a worse case scenario seize your fan due to caked on dust on the fan blades. Avoid very dusty areas or places where, over the long term you know fuzz, fur, or even smoke can enter into your Macbook.

Dec 22, 2013 1:03 PM in response to PlotinusVeritas

I use my MacBook Pro in a cool room, I would actually say cold, there isn't a lot of dust at all, barely actually. I might just have to open up my MacBook Pro and clean it possibly, if not I will bring it to the retailer where I bought this from, because I still am in warranty and I'll ask them to see what's wrong. But now that i think about it option "C" could be the problem, cuz it is making a whirring or "rrrrrrrr" noise. But thanks for your help. 🙂

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Why is my MacBook Pro's fan making a "rrrrrrrrrrrrrr" sound?

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