Your car is running way to rich, I have the same problem. If you pull your spark plugs you will see thay are fouled and covered with fuel. Most probably the white sensor on your thermostate housing or your AFM. I have done the following to keep running temporarily. i first uplug the brown sensor next to white one. then everytime i shut off car i pull fuel relay and let car run on its own till it dies. My problem is the white sensor. Its physically broken. and takes 3 weeks to get from anywhere since euro car. Another possiblity is the cold start valve is leaking.