Currently Being ModeratedJan 6, 2014 4:39 AM (in response to perezj39)
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
If this does not help, contact Apple.
Currently Being ModeratedJan 6, 2014 4:47 AM (in response to perezj39)
Open Activity Monitor and set it to ALL PROCESSES and %CPU to display values from high to low.
Install istat menus:
When your MBP gets hot and the fan starts speeding up, post images of both for evaluation.
Also run an Apple Hardware Test:
This may pick up some useful information.
Currently Being ModeratedJan 6, 2014 5:44 AM (in response to perezj39)
Could you describe what the fan sounds like? Is it more of a clacking noise or a smooth, but loud whirring noise?
If it's clacking, the fan needs to be greased because the oil well inside the fan component is empty and/or dry. If it's a smooth whirring noise, it is a software problem that can be troubleshooted with the above replies.
You could, of course, take it to Apple and have them look at it if you have warranty!