iMac 20" Early 2008 Fan Speeds
As you can see from the photo, my CPU fan is running close to 4000rpm but all temps are fairly low. When I select any settings within iStat Menus, it does nothing at all for the CPU fan speed, but it will control the others as expected. I have done the SMC Reset, and pretty much every other "fix" I can find online. Anyone know what is going on? Sometimes the fans speed up as soon as I log in, and sometimes it'll be after about 5 mins. Also, this began before upgrading to Yosemite, it happened in Snow Leopard, Mavericks, and now Yosemite. Thanks!!
iMac, OS X Yosemite (10.10.5)