I think it's Alistair Bell on this list make a little gizmo that you mount in the instrument pod and connect to the O2 sensor that gives and continuous indication of operation of the O2 sensor. It not a counter, but just a series of little indicator lights that when operating properly moved rhythmically back and fourth. As long as it does, all is will with the O2 sensor. If not - then no ocillation. On startup and until the O2 sensor warms up to operating temperature, the lights will wander eratically, but once up to temp, it will oscillate. A handy gadget. JOhn John Rodgers Clayartist and Moldmaker 88'GL VW Bus Driver Chelsea, AL Http://www.moldhaus.com
On 8/13/2011 10:46 AM, John Lauterbach wrote: > 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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