Previous 1 2 Next 20 Replies Latest reply: Oct 20, 2007 9:19 PM by EricBoucher
eriklanglois Level 1 (0 points)
Anybody have this problem. As soon as i start my MAC PRO, fans go full speed, since the last update (27/27/07). I did DL a firmware update that was suppose to correct this situation but it didn't change anything.

Here is a list of the latest updates on my computer:

2007-07-16 09:55:14 -0400: Installed "iTunes" (7.3.1)
2007-07-16 13:22:33 -0400: Installed "QuickTime" (7.2)
2007-07-16 13:22:36 -0400: Installed "Audio Update 2007-001" (1.0)
2007-07-16 13:23:17 -0400: Installed "Security Update (QuickTime 7.1.6)" (1.0)
2007-07-27 10:51:02 -0400: Installed "Mac Pro EFI Firmware Update" (1.1)
2007-07-29 09:33:18 -0400: Installed "Mac Pro SMC Firmware Update" (1.0)

Thanks in advance!!

Mac Pro 2 X 2.66 GHz Dual-Core Intel Xeon, Mac OS X (10.4.10)
  • David DeCristoforo Level 5 (6,170 points)
    You might want to reset the SMC and PRAM....

  • eriklanglois Level 1 (0 points)
    How can i do that? You had the same problem with the fan? Thanks!!
  • David DeCristoforo Level 5 (6,170 points)
    No I never had any problems with my fans. The reset button is on the main board just above the RAM boards. Your owner's manual should explain how to do the reset and also how to reset PRAM...
  • TLKay Level 1 (0 points)
    I am having the same problem, have you found a solution?
  • eriklanglois Level 1 (0 points)
    Not yet, i tried to reset the SCM and PRAM, i also tried to unplug every cables and reboot after a couple of minutes and i still have that problem...

    Did you get the fan noise after installing this Mac Pro EFI Firmware Update?
  • Philippe Minique Level 1 (0 points)
    1 or 2 days after receiving my brand new Mac Pro last august, it tried to imitate a jetplane taking off. I tried every possible reset of the PRAM and the SMC, but to no avail…
    I contacted Apple Sales Support, and had the pleasure of unpacking another brand new Mac a week or so later. (needed shipping from Ireland)
  • David DeCristoforo Level 5 (6,170 points)
    If you have done an SCM and PRAM reset and you have the latest firmware, etc., there is really little more to try. You can reinstall the OS "from scratch" and see if that "fixes" the problem. But if not, I would suggest contacting the Apple service people to have a look at your computer. I presume it's still under warranty....

  • idowow Level 1 (0 points)
    I was having the same problem with a little bit older G5 - the whole Jet Engine thing would happen and then sometimes I would get this error that said "You must power off your computer now - and then that is all I could do - force of the computer. A Genius at the local Apple store told me that 3rd party memory can cause that problem. He said it should not be a problem unless it does it a lot and during a time when system files are being written. Since I have been unable to afford Apple memory - I just do a safe boot every time it happens and then it will not happen for a while - especially if I shut it down every few days.

    I do not know if this helps anyone - but I thought I would share!


  • TLKay Level 1 (0 points)
    The fan is the fourth problem I have had since purchasing my Mac Pro in Oct. of 2006. I started having trouble immediately and to date have had my power supply and both processors replaced. Now I am told I need my logic board replaced.

    It is clear that when one component of the machine is malfunctioning, it wears on the other components. I want a replacement. Does anyone know the best way to go about getting this "lemon" replaced?
  • EricBoucher Level 1 (0 points)
    I bought a MacPro in august of 2006, and I have had the same problem a few times since then, but only every 3-4 months or so. When it happens, it's because I use a CPU intensive app, and the fans start (which is OK), but they never, never stop, even if the computer gets idle for a long time after that. Every time this happens, I have to shutdown completely and power back on to get the fans to stop (a simple "warm" reboot won't do the job).

    It happened 2 times in the last 2 days, and I updated my EFI-SMC many days (weeks?) ago ... It is doing it right now, and iStat shows that my temp is 30 degrees C (which is pretty cool), and my hard drive fan is at 499 rpm, exhaust fan is at 599 rpm, CPU fan is at 500 rpm, and power supply fan is at 2778 rpm. This is the one making all that noise.

    I would like to know how to calm down this fan when I quit my CPU intensive apps and the temperature gets cooler...

    It's a bit annoying.

    Thanks all for your input.
  • eriklanglois Level 1 (0 points)
    Fans on my computer are back to normal now and running smoothly. Saturday i put the computer on sleep mode for a while and when i start working with it later in the day, the fans started to make lots of noise and came back to normal after a little while. Anybody have a clue?

    Thanks for the support!!!
  • eriklanglois Level 1 (0 points)
    I don't know the best way to get your computer replaced, but with all the problems you had, it should not be difficult. If i were you, i'd do it quickly because your warranty is running out soon (1 year).

    This is the first time i have so many problems with a Mac myself. I though that i should get it replaced too... i will wait and see if another problem comes up in the next few weeks...

    Good luck!
  • eriklanglois Level 1 (0 points)
    Put the computer to sleep for a couple hours, came back later and the problem was gone... why, i have no idea, but the computer is running smoothly again. Hope it works for you too!
  • EricBoucher Level 1 (0 points)
    I installed a MacPro EFI update that was released yesterday (august 9, 2007). This update contains specific fixes for the MacPro fans. Hopefully, these fans problems will be a thing of the past.

    So folks, check out software updates...

    I'll try to reproduce the problem by stressing the CPUs in my MacPro and report.
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