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Home >> Volvo >> 1982 >> 245 GL, 2.1L Eng VIN 45, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Computerized Engine Controls >> Operation >> Constant Idle Speed System >> Electronic Control Unit

Electronic Control Unit

The electronic control unit for the constant idle system processes information it receives from the engine coolant temperature sensor, throttle switch and distributor. After receiving information on coolant temperature, throttle position and engine speed, the control unit sends electrical impulses to air control valve to regulate idle speed.

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