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Home >> Lincoln >> 1979 >> Versailles >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Auto. A/C Systems >> Components >> Engine Temperature Sender Switch >> All Models
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All Models

This switch, when the engine coolant temperature is below 115-120°F and when "HEAT" has been selected, will ground the circuit to the EVR. This prevents blower operation until engine coolant warms up.