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Mid 2009 Model A1278 / 2.26 or 2.53 GHz Core 2 Duo processor EMC 2326

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kernal_task is over 90% Fans on full, but cpu is not hot! MBP so SLOW

kernal_task is over 90%. Fans on full, but CPU is not hot! 47º Celsius

Mid 2009 13” MBP 5,5 is SLOW like molasses.

This happens even with a fresh wipe and install of El Capitan. EtereCheck no problems but took a longer than usual. Reset everything and problem still persists.

It’s been 3 weeks now, driving me around in a twist!

Any clues?

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Let's check your thermal and voltage sensors!

Install this great app TG Pro take a snapshot of the apps main window so we can see all of the sensors and fans (you may need to adjust the window size a bit so they are all visible) Post it here for us to see Adding images to an existing question

For the voltage sensors you'll need to run the onboard diagnostics. Restart your system and hold the D key. Depending on the version of macOS it might not work as Apple messed up the systems firmware within the newer OS's. If it works tell us the exact error code/s you get.

Reference: Mac startup key combinations


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A new screen or battery is one kit away.

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Hello, you can check this discussion about a similar issue and maybe you’ll find some clues or a solution.

Why is my fan making loud noises?

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G23 M23 will be eternally grateful.
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