Ok so my fan is making a very loud noise, and i know it isnt normal because i know what it is supposed to sound like when it's going top speed. And according to smcFanControl(which cant control my fan speed by the way) it's running under 1000 rpm, sometimes even lower. And randomly it will shoot up to 4000 then back to under 1000. And this didnt ship like this it started a few days ago and got steadily worse. I used to be able to make it stop by turning it off and then back on. But even then the fan made a kind of sputtering sound. I have tried reseting the pmu and the pram. So i want to know whats up with it and what i should do.