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Knock Sensor

WARNING: This page is about a different car, the 1992 Oldsmobile Ninety-Eight, 1992 Cadillac Fleetwood, 1992 Cadillac DeVille, and 1992 Buick Park Avenue. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect knock sensor harness connector. Using an ohmmeter, measure knock sensor resistance between sensor terminal and engine block. Resistance should be 3300-4500 ohms. Connect DVOM between sensor terminal and ground. Set voltmeter to 2-volt AC scale. Start and idle engine. Tap on engine block near sensor. A signal should be indicated on voltmeter. If no signal is indicated, replace knock sensor. Also, see TIMING CONTROL SYSTEMS  under IGNITION SYSTEM. Also see Code 43 in appropriate TESTS W/CODES article in this section.

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