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Q: The MIL light came on and the vehicles engine is running very rough. on 2010 Jeep Patriot

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Vehicle was filled about a 100 miles ago and gas cap was checked.
(1) Answer
most likely a missfire code. have the properly diaged, not a free code pull and get a bid. if you wait too long you may damage the cat converter and add a lot to your repair cost.

Roy