My 2016 challenger stopped cranking on Thursday. Unfortunately, my bumper to bumper wore off about 600 miles ago. It ends up being the fuel pump fuse. I swap it and the car runs for about 30 seconds and then dies. Fuse is blown again. Mechanic friend suggested that the fuel pump is bad. Replace the fuel pump and it still won't crank. It's not blowing fuses and I can hear the pump turn on when I try to start the car or switch it to run. I am at a loss here. Any suggestions on what could be happening would be greatly appreciated.

 

Which engine?

And apparently, it cranks just fine, just won't fire...... or run.

 

5.7
Yes. It was acting like it couldn't get any gas. I popped the lockring off again and the fuel line was disconnected. My friend accidentally cut the horseshoe clip when removing the original pump. So, it blew off the line as soon as I tried to start the car....