It comes on and stays on for a couple of days. But like I said only when I run it hard. It's 99svt. It's happend 5 times since I got the car last June. I havent had any other problems. I don't know if I should go get it checked out or just leave it because it goes off. When I stop it idles a bit. I don't know what else to tell you. Just wondered if anyone else had that problem.