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What does the engine knock sensor do?

Updated: 10/26/2022
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16y ago

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It reads the vibrations that result from the ignition of the air fuel mixture in the engine. The computer uses that information to calculate proper ignition timing.

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Q: What does the engine knock sensor do?
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Does the engine on a 2003 impala knock in the top of the motor if the knock sensor is bad?

The knock sensor just advances and retards the engine timing only. If there is a noise in the engine then you have engine are valve train problems. The knock sensor will not make the engine knock.


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