Dodge Repair Questions? Ask a Mechanic for Answers ASAP
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It sounds like you may have a vacuum leak internally or externally. Check for that first with water and a spary bottle externally and you need a smoke machine to check internally for intake gaskets etc.
Also check your idle air control motor for being bad or loaded with carbon on the pintle valve.
Remove it from the throttle body and look inside of it. You also may want to clean the throttle body while you're already there.
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You're running rich in that one bank. It can be an O2 sensor issue or a leaking fuel injector.
I agree that the charging system needs to be correct.
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