How can you tell what’s wrong??

I’m not sure if I’m right but I think my fuel pump went out in my 2006 Ford Mustang. How can I be sure that it is the fuel pump cause I have no money to fix it and if it isn’t the fuel pump I’m pretty much screwed until I get my disability money to by whatever part I need to buy. Just don’t know for sure if it’s the fuel pump!! Thanks guys for your help if you do decide to message back!’
 
  • Sponsors (?)