I am having a problem with my car. It is not evertime but... I start the car uit idles fine. I let it run for maybe 20 secs or so back up my car and start on down the road. It will start to "miss" and then dies. I have to crank and pedal it and it will start, but still not run 100% right. However as soon as it is showing temp around 180 on the temp gauge it runs perfectly fine. Never gives a problem past that. Its as if the problem is right at the point the car switches from open to closed loop that it has the problem. I switched the coolant temp sensor and the air temp sensor the first time it did it, but that did not help. The plugs are white and the 02 senors are white. The car when it is missing and dies smells like rotten eggs/ burnt clutch? Don't want to hurt my engine any ideas? I have always gotten code 31 (egr not on car and has not been for a long time) other than that no codes in current or memory.