Every fan inside is spinning at high speed
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)
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)
I ran the’ Quick Test’ and found one error.
4MOT/1/40000003 : PCI - 922
Thanks!
Ist dies eine gute Frage?
11 Kommentare
It now looks like the CPU sensors have a problem which is why your fan's are maxing out. Check the CPU carrier contacts.
von Dan
i restarted the system and checked for the connector and it looks al good.
The fans are now again at low speed like on the first picture at my initial post, but the fans are still going at full speed.
is it normal that there are 3 fans showing speed at 0 (intake,exhaust and ps)
You mentioned the mac pro diagnostics, how can i run the test?
i already tried with the original graphic card pressing 'D' at the startup but it stays a long time white screen and after it just boots up normally
thanks
von Aldo B
Review this: How to Start up your Mac in Apple Diagnostics or Hardware Test Mode
The carrier unit like has a bad connection so as the system heats up it looses its connection.
von Dan
@danj
i already tried it pressing the D key but nothing happend, it just booted up to mac os after a couple minutes and denied to go to diagnostics. is this normal ?
i used a Usb keyboard.
von Aldo B
Then you need to run from the grey OS installer disk that came with the system as outlined.
von Dan
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