What is a "anti-knock" sensor or module?

Asked by May 28, 2012 at 05:12 AM about the 1989 Ford Thunderbird

Question type: Maintenance & Repair

1 Answer

237,685

The sensor helps to monitor the engine performace, and when it detects knock or pinging. It sends a signal to the PCM which in turn adjusts the timing and fuel ratio to reduce or eliminate it in those situations you have knocking. Low octane, bad gas, carbon deposits and heat will contribute to pinging. It's best to replace the sensor if you know it is faulty to avoid damage to the engine.

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