I am wondering if the way to check the Lambda in my 86 300E % speed is like the 190E I already have. If I can recall, Terminal 3 @ X/11 is the one. I have 12.3 volts there and 36% Dwell for duty cycly, hot at Idle 700rpm. I checked because the Idle has been hunting a bit. From 1300RPM Cold to 650 Hot and ocasionally 900 hot. I checked the OVP and cleaned the speed signal wire terminals on the right fender well, any thing else to check? Thanks again!