So, today I was driving on the highway minding my own business, cranking the tunes, feeling good. Next thing I know some idiot was about to merge right into me so I gunned it in order to get ahead and away from said idiot. I didnt realize that I accelerated that hard (like I said I was cranking the tunes, didnt hear anything) but looked at rpm's and there I was at 4000. I'm usually really mindful at being easy accelerating to keep from having any tranny problems. Well right after, my engine light went on, has remained on since. I have noticed a slight difference in the shifting since then. Stopped at auto zone and their scanner came up with nothing. I know that the only way to really figure this out is to have a thorough diagnostic scan done by my mechanic but I wanted to hear any feedback that any of you on here might have. This is my first time joining a forum so I am totally new to this. Just figured it would help to hear from other jeep compass owners who have more knowledge than me. Thanks everyone!