An easy repair to some noisy fans
The fans on my MacbookPro had been running constantly due to some software that seemed to need 1 CPU to run constantly to check web pages. After finally figuring out which software to trash and reducing use of the fan, the wear and tear of this bad software took its toll and eventually the fans started to periodically make a grinding noise.
The directions from iFixit were great, the parts arrived quickly and it took about 30 minutes to complete the repair. No problems were encountered.
Follow the directions and be careful not to strip the screws when reinstalling them
Phillips #00 Screwdriver
TR6 Torx Security Screwdriver
Essential Electronics Toolkit
MacBook Pro 15" (Late 2008-Mid 2012 excluding Mid 2009 2.53 GHz) Left Fan
MacBook Pro 15" (Late 2008-Mid 2012 excluding Mid 2009 2.53 GHz) Right Fan