We replaced the fuel pump, flex fuel sensors, fuel filter, fuel pressure regulator. Did not replace the injectors, hubby checked them and stated they looked fine, cleaned them anyway and put them back afterwards. Ran for 3days and the transmission went out.

Fast forward 4months, finally got the transmission rebuilt and new torque converter in. Now I turn the key and it cranks and dies. I've made sure it isn't a security issue, we can hear the fuel pump, and hubby has checked up at the engine that it is getting fuel. Checked fuses, everything is ok. But it refuses to stay running after it cranks? Any help is appreciated, hubby is stumped 🤷‍♀️

 

How long does it run? A couple of seconds or is it longer than that? Is it the same length of time with each try?

 

Just because a vehicle will crank the engine and momentarily start does not mean that the "Run" circuit in the electrical part of the ignition switch is OK. So I'd test that.

 

I would also check the fuel pressure. You might be getting fuel but not at the correct pressure.. I know you changed the fuel pump, but check anyway.