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    1973 buick century engine

    i found a switch or a sensor and i dont know what its call so i here for your help...... its on the back of the engine head passenger side and its right on top of the exhaust manifold

    0  Views: 1766 Answers: 1 Posted: 11 years ago

    1 Answer

    knock sensor. used to smooth out engine incase of bad fuel, incorrect ignition, ect. they hardly ever go bad



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