Thank you for all the suggestions. The car has an AT transmission and stock air cleaner. I changed the filters when I first bought the car a month ago. It idled quite rough and the filters were trashed. I put in K&N filters and it was 100% better. I took off the cover tonight and cleaned it. I checked most of the vacuum lines I could see visually and saw nothing loose or cracked. Not sure if there is any other way to check them? Tomorrow I will check the MAF sensor. Let me say that I could just be over the top on my expectations because the car does not stall, it just has a slight rough idle at stop lights. It does not seem to respond instantly if the car is in D from stop. However it is much better if I start out in 1st gear and shift through them. I appreciate everyone's time and suggestions.