Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1992CROWN VICTORIA TOURING, AOD-EREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SYSTEM/COMPONENT TESTS - EEC-IVEMISSION SYSTEMS & SUB-SYSTEMSAIR INJECTIONAIR CONTROL VALVE (SWITCH-RELIEF)
1992 Ford Crown Victoria Touring, AOD-E
Air Control Valve (Switch-Relief)
1992 Ford Crown Victoria Touring, AOD-ESECTION Air Control Valve (Switch-Relief)
- Disconnect air supply hose at inlet. Accelerate engine speed to 1500 RPM, and verify presence of airflow in hose. Reconnect air supply hose to valve inlet.
- Carefully disconnect air supply hoses at outlets "A" and "B". See Fig 1 . Carefully remove vacuum line at vacuum nipple. Accelerate engine speed to 1500 RPM. Airflow should be heard and felt at outlet "B" with little or no airflow at outlet "A".
- Connect a vacuum line from manifold vacuum fitting to air control valve vacuum nipple. Accelerate engine speed to 1500 RPM. Airflow should be heard and felt at outlet "A" with little or no airflow at outlet "B".
- If conditions in steps 2) and 3) are not met, replace air control valve. If valve operates satisfactorily, air control valve is okay.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.