I bought her second hand 6 years ago, I have lots of little kinks with the car but usually runs well enough when I need her. I had replaced the full exhaust system 2 years ago as well as the gas tank etc etc.. When I turn her on I hear the fan starting up and it stays on the whole time but does not ...

My car sounds like it is an airplane, which is really cool to my kids but the joke is on me.

Just wondering what the causes could be before heading in to the garage, Can I disconnect, Do I need the turbo>?