it started with a clicky sound, much like a hard drive on the blink.
I also noticed the noise got louder as my mac got warmer. so with the help of ifixit i took my mac apart and removed the fans. One was stuck and the other was sticking.
I ordered new fans from ifixit which came a week later.
the repair went very well, i followed the Ifixit guide and put the mac back together, wow silence, I am so pleased with it and with Ifixit.
My advice to anyone is use Ifixit makes the job so easy, i changed my hard drive on my 8 year old iMac using the guide that was easy too and Make sure you have the right tools for the job.
Thanks Everyone at Ifixit.
MacBook Pro 15" (Model A1211, A1226, and A1260) Left Fan
MacBook Pro 15" (Model A1211, A1226, and A1260) Right Fan