Q: Why are my fans running on high, endlessly?
Here are my normal temps...
Here are my specs...
Tried SMC reset, PRAM reset, all the suggestions around the block.
Am I crazy?
d
iMac, OS X Yosemite (10.10.5)
Posted on Nov 24, 2015 6:21 PM
Sounds like maybe either a hardware problem with a sensor or something within that temperature utility that you are using.
1. To check your Mac for a bad sensor, see > Using Apple Diagnostics - Apple Support
2. I'm not sure what utility you are using to get that Sensor Overview shot, but many come with a couple of different way to set and/or adjust the fan speeds. If so, then perhaps you have accidentally done something within that utility that has caused a fan or all the fans to run at full speed.
Posted on Nov 25, 2015 6:12 PM

