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Home >> Ford >> 1990 >> Probe GL, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - EEC-IV >> Emissions/Sub-Systems Checks - Air Injection >> Dual THERMACTOR Air Control Solenoid Valve
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Dual THERMACTOR Air Control Solenoid Valve

The function of each valve can be determined by externally energizing the valve with vacuum lines attached. Check the resistance of each solenoid. Resistance should be between 51-108 ohms when checked at the coil terminals. If the resistance is not within these values, solenoid should be replaced.