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What is a knock sensor and where it is?

Updated: 10/25/2022
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15y ago

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Knock sensor "listens" to the engine for the sound made by the engine when the octane level of the gasoline it is burning is too low for the current operating conditions. The Electronic Control Module uses this information to adjust engine spark timing to alleviate the knocking that would be caused by the air/fuel mixture igniting too soon and eventually damaging the engine. Knock sensor is on the top rear of the engine nestled behind and under the intake manifold.

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15y ago
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Q: What is a knock sensor and where it is?
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