Will a Burned-Out Front Oxygen Sensor Cause No Idle Speed in the Buick GL8?

1 Answers
McSophia
07/29/25 1:40pm
Buick GL8 front oxygen sensor burned out will cause no idle speed, the following is a detailed introduction: 1. Oxygen sensor damage: After the oxygen sensor is damaged, it will affect the engine's acceleration weakness, insufficient power, and increased fuel consumption. 2. Front oxygen sensor: The oxygen sensor includes the front oxygen sensor and the rear oxygen sensor. The front oxygen sensor mainly checks the oxygen content in the exhaust gas after combustion. If the detected oxygen content is high, it means more air and less fuel, i.e., the mixture is lean. Less fuel means less oxygen is consumed during combustion; therefore, the oxygen content in the exhaust gas will be higher. In this case, it sends a signal to the engine computer, which then adjusts the fuel injector to reduce the fuel injection volume. Conversely, if the oxygen sensor detects low oxygen content, it means more fuel. The engine computer will then reduce the fuel injection. This way, fuel consumption, power, and engine working conditions can be adjusted to the best state. 3. Rear oxygen sensor: It is installed behind the three-way catalytic converter. It provides the engine computer with the composition data of the exhaust gas after being filtered by the three-way catalytic converter. The engine computer then uses the data from both the front and rear oxygen sensors to check the working efficiency of the three-way catalytic converter.
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