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Its located on the engine block under the intake manifold on #3 cylinder. Common that the one wire to it might have become disconnected. Its a piezzo microphone that detects pinging in a certain frequency only that would likely indicate preignition. The ECU retards timing to compensate. Not sure if TSRM has way to check besides just the code, its not in front of me, but I would just swap in another from a salvage yard and see, that is if its not the wire. In the meantime, set timing to 10 degrees and run 89 or higher octane and you will be fine.
Phil D.
Phil D.
