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#1
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Oxygen sensor voltage
In testing my heated ox today I turned on the key and when I tested the voltage at the green wire it started out at 11.5 and steadily dropped to around 1.3, why. 1990 190E California car.
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#2
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sounds like the heater circuit is shorted with the sensor wire. replace the o2 sensor. good luck, chuck.
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#3
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ox voltage
the wire to the heated section is what i was refering to. thats the wire from the car to the ox. i wonder if it goes threw a fuse or a relay.
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