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2003 expedition engine code po320 2003 expedition engine code po320
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  #1  
Old 05-28-2008, 04:40 PM
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Join Date: May 2008
Vehicle: 2003 ford expedition
Posts: 2
Smile 2003 expedition engine code po320
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
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Old 05-28-2008, 06:10 PM
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Join Date: Jan 2008
Posts: 218
http://f150online.com/forums/showthread.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.
Last edited by tech-doc; 05-28-2008 at 06:14 PM.
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Old 05-28-2008, 06:18 PM
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Join Date: May 2008
Vehicle: 2003 ford expedition
Posts: 2
Sorry and thaks
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  #4  
Old 05-28-2008, 07:23 PM
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Join Date: Feb 2001
Location: Guyton, GA USA
Vehicle: 2006 Ford F250 4X4
Posts: 707
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.
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