Ok, I found the led and button thing by the battery, whats the proper name for it by the way? #2 is the push button and #4 is the led. When I discovered this diagnostic connector the led was on solid. What should I do form here?

Observation: When the car is at operating temp and I try to increase engine speed via throttle cable the engine wants to die. Assuming since mixture isn't properly set, it's either too rich or too lean to keep up?


Here are the measurements @ 80C

Battery: 13.84v

Green connector of O2 sensor wire: .495v

Pin 3 of X11 connector: 2.093v (non-fluctuating)

EHA:0mA (non-fluctuating, almost as if I wasn't getting a reading at all!)

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'89 300E - 153k miles - California car - Black/Palomino