Ok so my cobra isnt my daily, I went out to start it (hasnt run in a week or so) car started and ran great for 20 minutes or so. I shut the car off and put a new belt on it. Went to start it back up and it had a real hard time starting, sounded almost like the battery was low. I finally got it to start and now its running like total crap. The belt is installed correctly. Sounds almost like a vacuum leak or a bad sensor. Its just really weird that it started all the sudden after the belt change. any help would be awesome. Car has 113k and is bone stock.