The car is constantly overheating. Also battery dies almost instantly..
We tightened the heater core lines... Checked fluids

After starting car to warm up, it ran fine for 2 minutes or so then suddenly died. It cranks over fine and has 12.9v at battery but will not restart. After checking for pressure on fuel rail schrader valve, i found the fuel pump is not running. There is no voltage to fuel pump circuit and I've replaced the relay and the fuse in underhood box. Both of these tested good but were replaced anyway.