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Home >> Mercury >> 1994 >> Villager LS >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Engine Coolant Temperature (ECT) Sensor
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Engine Coolant Temperature (ECT) Sensor

Threaded into coolant passage near thermostat housing, ECT sensor inputs coolant temperature to PCM. The signal from ECT affects air/fuel ratio, idle speed, EGR flow, purge flow, fuel pressure, boost pressure (turbo engine) and ignition timing output signal from PCM.

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