Hello,
This could an issue with the fuel pressure.
If the vehicle does not maintain correct fuel pressure the engine will stall or run very rough.
The fuel pressure regulator can be faulty and might not be able to provide adequate pressure while the engine is running.
Test the fuel pressure. This vehicle should have 34 - 43 PSI of fuel pressure while idling.
You can typically go to your local auto parts store and get the fuel pressure tester to use.
Here is a helpful video on how to check fuel pressure:
https://youtu.be/aITQclp7zIE
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
I have attached diagrams for your reference.
Please let me know of any questions.
Thank you.
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Saturday, September 11th, 2021 AT 9:56 PM