#3.8l #help #mustang

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    2003 Ford Mustang V6 3.8L gets around 12mpg and seems to shake a bit when started cold and has a bad rough idle when warm

    Hey everyone I've tried so many things to get this fixed. When I start it up in the mornings the car will shake a little bit, but when I drive around for a bit let it get up to temp and run it for a bit. Then I'd stop at a store or something for around 15 or so minutes and I'll come back to...