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Home >> Ford >> 1990 >> Bronco II RWD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Input Devices Operation >> Engine Coolant Temperature (ECT) Switch

Engine Coolant Temperature (ECT) Switch

Threaded into bottom of radiator, ECT monitors radiator coolant temperature and signals ECA. The ECT signal affects air/fuel ratio, EGR flow and ignition timing output signal from ECA.

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