MacBook Fan Noise Solved

[vera.cai]

One way is to use "Top" to check which one eats up your CPU

I've also had fan noise issue after a very quiet period for my MAC and wondered why it got such noisy.

I've read some articles here, checked my print queue which is fine and got
hint from here to check my CPU usage. Used "top" and it did show one process
eating up my CPU. It is the periodic scanning job which didn't got killed cleanly.
The process is "scannotification" something like that. After killing that process, got my MAC back to quiet again! You might also just do a quick "Top" and check which one is an offensive one. Hope it helps

 

[atomsmith]

thanks

worked for me. thanks!

 

[mlpomeranz]

Amazing

I also just registered just to thank you. This problem has been bothering me for months at least. I have an older laptop and thought it was done for. I deleted two pending print jobs and the fan instantly went down. Amazing. Thanks.

 

[sedonao]

Thank you!

drstauffertnd, thank you so much. your answer solved my fan problem as well. you posted in 2008??? yikes.

 

[kerwells]

Fan Noise fixed

Since I upgraded the hard drive and RAM in my MBP 15" (late 2008) a few months ago that fan had been making a slight clicking sound which sounded to me like the fan was hitting the housing or a piece of debris. I tried using the SMC fan control trick to no effect, though it's cool to know you can use that control.
So I decided to take the fan out and try to fix it as suggested above.
Amazing. It's a scary ride if you're not used to getting into the guts of your laptop (I did the RAM and HD switch with a more tech savvy friend) but the results are so satisfying. I followed the instructions above, and the demo video, and lifted the left fan out and took it apart. When I took it apart to oil it as suggested, I could see very slight but definite abrasion marks on the inside of the upper half of the fan housing. So I took a piece of very fine emery paper and sanded that area and then blew it off. Reassembled it, reinstalled, and now it's all but silent.
A word to other novices who are considering this operation or anything that takes you inside your laptop: Be not afraid, but be vewy vewy gentle, especially when lifting and disconnecting those little connectors where the wire bundles attach to the logic board etc. Use gentle steady pressure, and watch the video carefully to see in what direction you should be lifting or pulling.
Thanks all who posted above for your advice.

 

[kenti28]

Worked for me, too! Thanks~

 

[Kate Monro]

I also registered just now because I wanted to tell you that you have just solved my fan problem. Seriously. I actually spent a large portion of today looking at second hand macs to buy because it had got so bad. Found your thread and it was back to normal within 15 seconds!