My macbook pro's exhaust fan has never came on since I have owned the computer, then suddenly is came on at full speed during boot up and now its off again?
Mac Pro, Mac OS X (10.6.8), upgraded hard drive 2 GHz
Normally the fan, or fans, run at about 2000RPMs at all times. Normally you can't hear them but then are running.
If this happens again check Activity Monitor to see if any process is running out of control using a lot of CPU cycles.
Are you sure? Download iStat and monitor the fan speed(s): http://islayer.com/apps/istatpro/
Are there any fans other than the exaust fan cause I have "fan control" and it normally reads a temp around 120 F and a left and right fan speed of 2000 rpm but when it went haywire it said the temp was 32 F and -1 rpms. I do hear the fans running normally, like now, hhbut they are very small sounding. The fan I heard when there was a problem sounded completely different, it was moving a huge volume of air.
No, 15" and 17" models have only 2 fans. That 32F and -1 rpms is not normal.
I wish I was more computer savvy but I don't know why it said that. It hasn't happened before or since. It was just yesterday that it happened but with that fan control I can set the speeds manually and if I crank them all the way up it still will not sound as loud as it was. I could acually feel the air coming out of the louvers in the back. And now its back to 'normal' if the way its running now is.
You can always run the Apple Hardware Test by using disc 2 of 2 that came with your mac and see if it finds anything.
macbook pro's exhaust fan
