Easily the best temp/fan control is: SMC fan control. You can easily change your default fan speed and make multiple profiles to quickly turn fan up/down. it displays in the menu bar and uses a max of 0.3% CPU. Since OS X 10.5 it's treated me well. Github, opensource...can't beat it.
Also, installd tried melting my CPU today. I noticed it (thanks SMC ) and killed it like a skillet. 130% hoggin and 156F. But I"m running my fan at double the default RPM & have my mid-2009 MBP seated upon a laptop cool with another fan in it!
It seems like I've been down this road with installd and too tired to chase it down. Wish I'd stayed on 10.6.8
I have 8gb RAM and a 120GB SSD with 10% free space.