What’s going on everyone , my 17 Durango is giving me a hard time. It runs and drives but it randomly doesn’t want to start. I try to start it and it just cranks but no start . I get under the vehicle and mess with harness close to fuel tank which I assume goes to the fuel pump and it kicks on an after a few seconds. Once it’s on it doesn’t turn off. Been told could be crankshaft position sensor , fuel pump, or fuel pump harness itself . NEED HELP PLS ITS DRIVING ME CRAZY