Noise problem: Left fan replaced, problem persists

Hello everybody,

I was having big noise problems coming from the left side of my Macbook Pro. Grinding stuff, highly uncomfortable. First I opened the laptop and added some lube to the left fan. The noise disappeared for a couple of hours. I then proceeded to replace the fan, with one from ebay, following the instructions from this website.

After doing so, the left (new) fan continue to produce some noise, although a slightly different one than the one before. Noise goes crazy and suddenly stops. Now iStat says that the left fan ain't spinning. I did a reset on the SMC but still, left fan runs at 0 RPM. Noise of course, disappeared. :P

PS. I'm not sure if the fan is effectively not spinning, I believe I'm getting a low humming, though a different one that the one coming from the right side.


Answer this question I have this problem too

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For information, left side feels hotter than the right side.


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The problem with buying a used fan or an ebay fan is that it's probably as old as the one you're replacing. On this part I much prefer new parts. Here are new ones: MacBook Pro 15" (Model A1150) Left Fan

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Hello Mayer,

Thanks for your answer. I did replace it with a new fan. It was in the description and it did look new. :S


How's it working?


Latest and greatest: I turned on the computer with the case open. "New" fan not spinning. Reconnected old fan with noise issues and it spins. Stupid fan! I'm going to return it. I lubed the old fan but problem persists... at least I know now.


Lots of info on the web for what to use and not use to lube. I like graphite.


Bought the "new" fan from iFixit and it makes more grinding noises than the fan it replaced. Got a used one off of eBay for a third of the price and problem solved.


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Paul will be eternally grateful.
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