Currently Being ModeratedMay 4, 2012 8:33 AM (in response to iChasert)
I'd be curious to see what your Activity Monitor and Console are showing in the following three states:
A) when your machine is "behaving normally"
B) right after the RPMs have ramped up
C) right after the RPMs return to a normal state
Want to post some screenshots of each state? (Before snapping, try to enable as many columns in "View" as possible. And in Activity Monitor just sort everything by the "%CPU" column.)
Currently Being ModeratedMay 4, 2012 9:03 AM (in response to iChasert)
Run the extended version of the Apple Hardware Test. I expect it will return an error message containing the string "4SNS," indicating that one of your machine's temperature sensors is faulty. When a temp sensor is bad, the fan or fans (your 13" has one fan, the 15" and 17" MBPs have two) run at top speed as a precaution, just in case the bad sensor is failing to report an overheating condition. There is usually no such condition, but because many of the sensors are soldered onto the logic board or incorporated into other components that are soldered to the board, a board replacement may be the only remedy for the roaring fan.
Currently Being ModeratedMay 4, 2012 11:08 AM (in response to eww)
so, thanks. I tryed to run the apple hardware test; http://support.apple.com/kb/ht1509
I connected the macbook via an ethernet cable to my switch, then I started it up holding down the D key; The screen remained gray for 30 seconds, then the login screen appeared (I'm using FileVault); I tryed two times: the first, holding D down before pressing the power button, and, the second time, holding it afeter pressing the power button, but before the gray screen appeared...
Currently Being ModeratedMay 4, 2012 12:20 PM (in response to iChasert)
iChasert: Run the Hardware Test from one of the DVDs that were shipped with your computer. See the "Additional Information" at the bottom of the article you linked to learn which disc it's on, if the disc label doesn't tell you.
Currently Being ModeratedMay 4, 2012 1:21 PM (in response to eww)
Unfortunately I only have the application install dvd;
For some Apple computers that shipped with OS X Lion, if Apple Hardware Test cannot be found on the hard drive, an Internet-based version starts up instead. An Internet-enabled connection via ethernet or Wi-Fi is required to use this feature
Currently Being ModeratedMay 4, 2012 3:33 PM (in response to iChasert)
If you have the Applications CD, look in the upper right hand portion of same. There should be a short paragraph about the Apple Hardware Test. Or just put the CD in the Optical drive holing down the 'D' key. That will pull up the hardware test.
(I also have a 2010 MBP)
Currently Being ModeratedMay 5, 2012 9:05 AM (in response to OGELTHORPE)
I tought it would have applied anyway because the macbook is updated to the latest firmware and supports netboot/internet recovery. I've found the 10.6 os install dvd, but it didn't have the aht.
As suggested by OGELTHORPE, It's on the Application Install Dvd;
I ran it, and the result is...
No trouble found!
Now I'm performing the extended testing
Currently Being ModeratedMay 5, 2012 7:23 PM (in response to iChasert)
Again -- screenshots might help.
I'm not insinuating that you could be overlooking something blatant -- such as a runaway process. It's the not-so-blatant / seemingly innocent stuff that someone else here may recognize from a past experience.