Chosen Solution
Hello @mayer I have a Mac Pro 5,1 (mid 2010) and I have months this problem with the fan’s spinning all the way to the max sounding really loud and annoying after a while. I saw your screenshot from your fan speed’s and compared it with mine. I checked inside my Mac Pro and every fan inside is spinning at high speed, but the fans that control my: Intake, Exhaust and PS are at 0? But they are spinning inside and with no issue. The fan’s did have a little bit of dust but I already blew it away with an electric blower, and nothing changed after blowing away the dust.
Hope for some good tips! Thanks in advance Update (02/04/2019) @mayer @danj The fans of the Boost A Boost B is now at maximum speed in TG Speed control. The mac is just turned on and there is no task running.
I did not do anything from yesterday on, this just happened after booting it up from yesterday Update (02/04/2019) @danj
I ran the’ Quick Test’ and found one error. 4MOT/1/40000003 : PCI - 922 Thanks!
I felt you needed your own question on this. I’m posting my previous answer from the other question. I will need some time to research your issue further, will get back to you. What upgrades or repairs have you done on this machine, what OS X are you running? I’d run TG Pro to see if I could isolate the problem: https://www.tunabellysoftware.com/tgpro/ compare mine that’s been running all day with yours Please note yours is showing a hard drive sensor failure. I’d pull one drive at a time and restart to find the offending one. Your CPU’s are also running much hotter than mine. I’m running 2x 2.93 GHz Quad-Core Intel Xeon Dos-Dude flashed 2009 to 5,1 running Sierra UPDATE 2671 Single-Core Score 15113 Multi-Core Score Geekbench 4.3.3 for Mac OS X x86 (64-bit) System Information System InformationOperating SystemmacOS 10.12.6 (Build 16G1710)ModelMacPro5,1Model IDMacPro5,1MotherboardApple Inc. Mac-F221BEC8 Memory12.0 GB 1066 MHz DDR3
AHD - 4MOT/1/40000003 : PCI - 922 The key is the PCI entry. Remove slowly the PCI boards sans the Video board. After removing each did you encounter a more stable system?
The problem in the ( fan motor or his cable ) , the power line of lower speed doesn’t work , so it just run in higher speed to stop damaging your cpu.
