So last week out of the blue, I'm coming home from dinner and at a stop in traffic I notice a pretty rough idle that hasn't gone away since. When I start the car up it doesn't start happening until the engine warms up and starts idling under 1000 RPM. When it's really bad it almost sounds like a popping or misfiring but this seems to be intermittent. Usually it's just a rough idling but when I give any amount of gas it goes away. The car drives fine and there seems to be no power loss. Yesterday driving home from work my Service Engine Soon light comes on and hasn't gone off since. I haven't ran anything yet to see if it throws any codes but I will have to do that this weekend. The car is a 2004 with 77K. Has any one have anything similar happen or have any experience with this?
Thanks