First, thank you to one of the list gurus who suggested checking on shorts between O2-cable and its shield. I had one of my own causing. When the O2-sensor is connected and I measure the voltage between the connector and engine ignition control module heat shield, I am getting around 0.46 volts with engine warmed up. Voltage is rather stable with engine at idle. Am I in the ballpark? With O2-cable unplugged, resistance between connector and ground on cable to O2-sensor is infinite. Resistance between other connector and ground on cable to ECM is 173000 ohms. I am not sure what I am missing, but engine runs well, but is running very rich. John |
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