So i drove 1800 miles about two weeks ago and last week the cel came on, stayed on for about an hour and turned off and hasnt come on since. I would also note that the idle is really rough and it feels really slugish. Its a 5 speed with 34k miles on it. Where should i start?

 

Check the check engine light , even thought the light isn't on there is something called a pending code and it will still pop up on a scanner .