Hi Cap'n!

I am currently also confused with my EHA readings and just discovered this interesting threat.

At the point were Steve lost you I am still lost. Steve says: "Hook your volt meter to the O2 sensor lead (leave it disconnected from the controller). If you get 1v the system is rich (or the sensor is lieing). Use the 12v thru Cap'n method to lean it out. Does the method make the engine run poorer? Does the voltage drop below 1v?"

What did you do exactly? I understand that I disconnect the O2 sensor and that I measure the voltage with the engine running. But with the sensor disconnected, how do lean out the mixture? I thought if you use the 12v thru cap'n method you are applying a >1v signal, so how could it drop below 1v?

And just to be sure: In the steps before when you grounded the signal or when you 12v-thru-cap'ned it, you had the sensor connected, right?

Final question: Did you switch off the engine + ignition to dis/reconnect the O2 sensor. I am always a bit afraid to (un)plug connectors whith ignition on.

Cheers
Tom