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Author Question: Technician A says that a wide-band oxygen sensor, also called a lean air-fuel (LAF) sensor, can ... (Read 5141 times)

acc299

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on: Aug 13, 2021

Question 1

On a poorly running engine the wide band oxygen sensor can be quickly checked by ________.
◦ Jumping the connector with a flashlight battery
◦ Jumping the connector with a jumper wire
◦ Disconnecting the sensor connector
◦ Disconnecting the vehicle battery

Question 2

Technician A says that a wide-band oxygen sensor, also called a lean air-fuel (LAF) sensor, can detect air-fuel ratios from as rich as 10:1 to as lean as 23:1. Technician B says that the oxygen sensor signal determines fuel trim which is used to tailor the air-fuel mixture for the catalytic converter. Which technician is correct?
◦ Technician A only
◦ Technician B only
◦ Both technicians A and B
◦ Neither technician A nor B
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Marked as best answer by acc299 on Aug 13, 2021

tmlewis4706

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Reply #1 on: Aug 13, 2021
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Roxy Guillen

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Reply #2 on: Aug 19, 2021
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