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started getting very hot (210 degrees) while performing same task that would normally raise it to 170-180. what could cause the sudden increase?
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Most likely your HD SATA cable is breaking down so it's fighting though a CRC battle between the drive & CPU every time you open or save a file.
Here is the IFIXIT guide: MacBook Pro 13" Unibody Early 2011 Hard Drive Cable Replacement and you want to use the newer version of the cable: MacBook Pro 13" Unibody (Mid 2012) Hard Drive Cable - Apple P/N 923-0104. You'll want to put some tape down on the upper case where the cable rests as the ruff surface of the aluminum often wears the cable.
I would strongly recommend after you install the new cable to do a full backup and then wipe your drive and reinstall the OS and restore your backup to make sure you don't have any corrupted files.
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Robert, I would also follow the ifixit guide tear down to remove the black fans and use a can of air to make sure the vents are clear of dust.
Yes! I did gloss over that.
Dusting out a system should also be done. Don't for get the heatsink fins.
Thanks! @avanteguarde
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