[Solved] Kernel_Task Issue
My 2013 MBPro 15" is having a kernel_task issue. I have tried SMC & PRam reset, OS Restore, and now Nuke&Pave. With iStats I can confirm there is no temperature issues and can use MacFan Control to set the fans to run based off temp so the fans slow down. But with the CPU being sucked up by kernal_task my Mac is useless for what I need to do. Before I junk this laptop (I really don't want to since this machine still meets my needs) is there any good advice to be had?
I've thought of maybe doing this...
But I am not 100% that will solve the issue.
Installed the Intel tool, couple shut downs and PRAM resets and still no luck. Been trying the command line code as per the original link but no luck yet....more updates Thursday!
Guess I could start taking donations for a new MBPro?!?!?
The kernel_task "Is" macOS. It is performing service on behave of the programs you have installed and running, including 3rd party background tasks, such as anti-virus, Mac cleaners, etc...
The ONLY situation where the kernel_task "Fakes" high CPU is when the battery is dying (or as you have mentioned high temps) and macOS is basically slowing down scheduling of other tasks to reduce the load on the CPU, Storage, the other electronics and the fans.
CocnutBattery can help tell you if your battery is in trouble < https://www.coconut-flavour.com/coconutbattery >
You could use EtreCheck to find out what 3rd party software is installed on your system < https://etrecheck.com >
But the kernel_task is just a symptom, not the problem.
Backup first. Please, Please backup. 2 backups, using 2 different backup utilities, going to 2 different backup devices is the safest way to keep "Murphy's Law" from losing your data. Carbon Copy Cloner is a great choice for one of the backup utilities. SuperDuper (free for a full clone) is a good 2nd choice, and of course Time Machine. If you want another backup option, Disk Utility -> Restore with the external disk as the destination.
I think you can try renaming the MacBookPro8_2.plist file as specified in the web page you specified.
Your system should still boot. If it does not, at worse you would be looking at restoring from a backup.
And it might work or at least give you a different data point in diagnosing the problem.
Please let us know how it works out. And maybe we will learn something ourselves.
I noticed this happening on my 2011 MacBook Air, and I turned on CPU Frequency in the menubar.
Any time I was experiencing this issue my CPU would show 800MHz (instead of usually showing 1.7-2.3GHz). Seems when there are battery or power concerns, macOS throttles the CPU down to 800MHz, most likely to keep the power consumption predictable as it gets close to needing to power off the machine, etc.
Maybe turn that on and see if it helps shed any light on this?