If its running that bad i'm surprised its not throwing a code, could be a number of things like spark, fuel, intake leak or loose connection
New Compass with 2.4L with 2100 miles. Has a rough idle and feels like it wants to stall. Can be in or out of gear and more present when warmed up. Truck shakes when stopped but takes off OK. Engine sounds a bit rattlely when in park and listening from the front. I will take it in soon to the dealer but wondering normal or ?
Thanks for any feedback,