Scotty, my car is having a problem where the engine will die immediately after letting off the starter. After it happens, the engine will crank, but will not start. If I let it sit for a while, it will run, but the exhaust smells very rich like it was flooded. It is a 2005, and fuel injected. Might it be the idle air control valve? The idle isn't always consistent, even when the motor is at operating temp.