I've been trying to figure this problem out for a few months now... I drive a 99' Automatic in the past few months i have been having very rough starts (basically wont start unless i give it gas while turning the key) on top of that nearly 75% of the time i stop at red lights and stop signs the rpms drop to nearly zero it rattles really bad and then stalls unless i give it some gas... ive replaced my throttle body and everything on it, both 02 sensors, fuel pump, spark plugs, distributor cap, and spark plug wires... if anyone has had this problem or has any idea to a fix itd be greatly appreciated.