2012 impala lt knocking noise when accelerating

Asked by Guru98YZCH May 03, 2022 at 11:42 PM about the 2012 Chevrolet Impala LT Fleet FWD

Question type: Maintenance & Repair

4 Answers
155,265

james answered 2 years ago

Is the check engine light on? I'd suspect a bad knock sensor. The knock sensor is like a microphone that listens for denotation from the engine. When denotation is heard a signal is sent to the computer to retard the ignition timing to stop the denotation or knocking. If the knock sensor is not working the check engine light should be on and a trouble code will be stored in the computer. You can visit your local auto parts store and have them scan the computer. Most stores will do the scan for free. Hope that helps! Jim

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307,265

Gene answered 2 years ago

Or a bad rod bearing. Bye bye engine.

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