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Ford Workshop Service and Repair Manuals

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Tune-up and Engine Performance Checks > < Fixed Steering Column|Page 2299

Aerostar AWD V6-245 4.0L (1990)

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Knock Sensor: Description and Operation

Knock Sensor

    The knock sensor, Fig. 11, is a piezo-electric accelerator accelerometer. The sensor uses the resonant frequency to mechanically amplify the engine
knock frequency (5-6 kHz). 

Tune-up and Engine Performance Checks > < Fixed Steering Column|Page 2299