Wow! Those are some great replies! Especially the 88 300CE brand new. I bet that was one of the top cars back then. Thanks. I wonder how these engines and idles get so out of whack with the rest of us?? I've literally replaced everything I can beside the engine and once I think I have it purring, boink! Something changes and I'm fighting the idle/surge/start problem again. Anyone that had this engine newer ever notice the first things to start causing these issues? I'm of the mindset that it has to be fairly simple since these are built so well. My engine is very strong with 185K and Transmission is super tight. Would like to turn back the clock and ride in one of these cars brand new I've had mine for a year and fight with it on and off. I do like working on it though.