my car will shut off on 1996 Cadillac Seville SLS

when going down the road my car will shut off after i let it cost or even sitting at a red light

Asked by for the 1996 Cadillac Seville SLS
I had similar symptoms but in addition the car's accelorator seem to have dead spots in it where it would not accelerate smoothly. It turned out to be a faulty fuel pressure regulator which was leaking fuel directly into the intake and intake vales mixing with the oil. After that was replaced and my fuel ridden oil was replaced - it ran fine after that.