Shuts down immediately?

Hello,

It sounds like the engine is shutting off due to lack of fuel.
This can happen due to a restriction in the fuel line like a dirty fuel filter or pulsation regulator, a faulty fuel pressure regulator or a weak fuel pump.

Check the fuel pressure. This vehicle should have 64 PSI of fuel pressure.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

The fuel filter can accumulate debris and can become too restrictive. This will cause not enough fuel to pass through, leading to fuel starvation to the engine.

https://www.2carpros.com/articles/how-to-change-a-fuel-filter

I have attached diagrams for your reference.

Please let me know of any questions.
Thank you.