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High idle fan speeds on MacBook pro

lonewolf5460
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I have been having issues with the fans being high at idle and not parking the rpm at 0 when in temperature range. I reset smc and it goes away for a while and it resurfaces eventually. I did a full format before so I don't think that is it, any ideas it happens just with safari open with one tab on reddit.

 

MacBook Pro 13 2017

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Have you reset the PRAM? https://www.macexpertguide.com/reset-pram-mac/

 

Pull up activity monitor, is something eating up a lot of resources? 

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Yes safari tabs and sometimes then this thing named kernel something will take up 115% of the cpu. Thanks for the tip sir will try it when I get back home.

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On 8/12/2019 at 7:27 PM, lonewolf5460 said:

then this thing named kernel something will take up 115% of the cpu

kernel_task is essentially the operating system. Its not something to be worried about if it's taking up resources. 

 

Can you define "idle" because these lines of MacBook Pros can heat up rather easily. Just a few browser tabs (depending on what they are), can easily make the fan(s) rev up.  

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Just safari open on reddit and youtube at the time tbh. The fans were not spinning down after a high load either just staying around 3000-5000 rpm. I did a full format with the smc and pram reset this time on Wednesday. I made sure to do the smc and pram reset after wiping the hard drive but before installing macOS again everything seems ok now. Fans spin down after playing city skylines and park to 0 when the temperature is low enough. I can now also browse the internet with the fans parked at 0 again idk what it was but I am good now.

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