My 2005 R/T is idling rough and the check engine light has come on. I have had this problem before and I get amultiple misfire code. I have had a tuneup done about a month ago and changed the camshaft sensor this seemed to fixthe problem with the check engine light for a while but it still idledrough. I did not see any code flashafter the tune up because I watch them run the diagnostic machine on mycar. The only thing I have done was Ireplaced the belt. I do here a tickingnoise under the hood which leads me to suspect a valve spring. It runs great other than that. There is no lag n the throttle and it seems torun great as speed. Have any Ideas?