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Home >> Volvo >> 1982 >> 242 GLT, 2.1L Eng VIN 45, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Computerized Engine Controls >> Operation >> Constant Idle Speed System >> Coolant Temperature Sensor
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Coolant Temperature Sensor

Coolant temperature sensor provides an electrical impulse to the electronic control unit at low coolant temperatures. At low temperatures, the control unit activates the air control valve to provide more air to increase engine speed.

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