Currently Being ModeratedMar 14, 2013 4:58 AM (in response to Brenda.S)
You may have experienced a 'runaway application. This support article will give some insight on this:
Currently Being ModeratedMar 14, 2013 6:17 AM (in response to OGELTHORPE)
Many thanks for trying to help. i have done all that was suggested-and feeling very brave- but nothing showed higher than 4%. Do you think I need guidance on settings for the 'energy saving ' on my Mac as I'm not too sure what they should be, in spite of reading it up in the Tiger manual.
Currently Being ModeratedMar 14, 2013 8:16 AM (in response to Brenda.S)
There are three sets of conditions that will set the fans at top speed, or roaring'.
1. A temperature sensor has failed and the Mac will by default engage the fans in order to protect it self from possible over heating. This can only be stopped by fixing the hardware problem.
2. One is using a heavy duty application (Skype, games, video, etc.) that require a lot of CPU resources and thus creates heat and consequently speeds up the fans.
3. A 'runaway process' where an application gets into a loop and thus loads up the CPU requiring the fans to speed up in order to dissipate the heat.
None of these conditions have any direct connection to energy savings. That is not your problem. Consider downloading iStat pro from the Internet. This widget monitors the internal temperatures and fan speeds of you Mac. If your fans start to speed up again, open Activity Monitor (set to 'All Processes and '%CPU' to show values from high to low) and you should be able to determine what applications are the problem. Shut down the ones you can or do a restart.