Ok guys.. I'm lost and have no idea what to do next. I have an 87 560SEL. The car runs beautifully, but when at an idle it wants to stick around 1200. When it gets warm, it wants to peg at 1400. In drive it will drop down and stay at 850. There is no miss or rough idle. The fuel/air mixture is 14.7/1 which is exactly what the factory specs are. Replaced the air vacuum contor module. No change. When slapped on the computer, the exhaust is blowing at 0. It just wants to run high in idle. Any help would be greatly appreciated. I love this car, but it is eating me out of house and home. I'd kick it, but that would dent the perfect paint job. Help!!!!