I am having a periodic stalling problem. When I have driven the car for about 30 min in stop and go traffic it will stall. If I let it sit for about 10 to 15 mins it will start and not show any signs of the issue. I have changed the IAC just to be sure. Also the dealer had it for a couple days could duplicate the problem. It’s happen about 3 to 4 times in the last 3 months. It’s a 98Gt with 142,000 miles also I am getting no idiot lights at all. This is f@#King driving me crazy . Hope some one can help.