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1991
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Mark VII LSC
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Repair and Diagnosis
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Engine Controls - Sensor Operating Range Charts
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Microprocessor Control Unit (MCU) 5.8L Police
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Heated Exhaust Gas Oxygen (HEGO) Sensor
Heated Exhaust Gas Oxygen (HEGO) Sensor
HEATED EXHAUST GAS OXYGEN SENSOR VOLTAGE
Condition
(1)
Voltage
Increasing Engine Speed
Increases
Decreasing Engine Speed
Decreases
Engine At Idle
0.2-0.6
(1)
Measure between HEGO sensor and ground.