Engine not running right and RPMs go up extremely high

My car has been seeming like the gas is running out and then it will go back to running or sometimes it wont crank at all. Then sometimes it will crank just fine, then sound like it's going to keep revving until it blows. My car is dangerously slow. Can you tell me where every sensor and driver module and anything that has to do with the fuel pump is located and how to repair each one instead of having to replace my fuel pump? Also I would like an actual image of a 2002 Mustang 5 speeds 3.8 that has everything labeled. Thank you for your help.