stumbles and stalls upon acceleration

Hello,

This could be a fuel related issue. If the engine is not getting sufficient amount of fuel during acceleration it could cause it to cut out.

This could be due to a faulty fuel pressure regulator or a clog in the fuel line or a dirty fuel filter.

Test fuel pressure to see if it has adequate amount. This vehicle should have 55-62 PSI of fuel pressure with the key on and engine off.

Here is a video on how to test fuel pressure:

https://youtu.be/aITQclp7zIE

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.