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So, my iMac is finally working but there is one more thing. I replaced the SSD and there is no thermal sensor. These sensors are really expensive and my iMac is running like a G3 because of kernel_task of course. Is there a fix that makes the kernel_task think that the thermals are fine regarding the SSD?
Sorry not really. Technically it’s not a bug it’s by design! The system needs thermal sensors to control its cooling. So when you have either a damaged sensor or have something over heating you want the system to go into Safe Mode which is why your system is so sluggish. Lets see whats failing if you can run the onboard diagnostics and tell us what the error message is. Restart your system and hold the D key to enter into diagnostics. You may want to also install this great app TG Pro it give you a nice interface to see all of your thermal sensors and fan status. Take a snapshot of the main window so we can see whats happening and post it here for us to see Adding images to an existing question
