My expedition engine light is on and the code reader said po320.and the battery light flickers and now the truck will just stall out while driving.If any one has an idea thanks

 

https://www.f150online.com/forums/sh...d.php?t=312874

This is a sticky thread in the ENGINES forum for future reference.

I am sure if you posted this question in the ENGINES forum quite a few people will help you out with that. Be sure to add year and engine specs in next time please.

I would say get the alternator checked.

 

Sorry and thaks

 

1. Sounds like your alternator is shot.
2. Does it stall when you stop? If so, it could be your idle air control (IAC) valve.