Hi, I have a 1998 Omega CD 2.0 petrol. When I stop at the traffic light, say after 10 seconds when engine is at idle speed, the Engine Electronic Light comes up. As soon as I rev it or start moving, it goes away. In the last two years cam shaft, crank shaft and exhaust sensors have been replaced. Does anyone have any guess what it might be, before I take it to Vauxhall for computer check? Regards Mehdi