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Dodge and Ram
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1988
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Caravan Base, Automatic
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Repair and Diagnosis
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Engine Performance
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Air Injection System
Air Injection System
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Description
Operation
Air Pump
Air Switching System
Diverter Valve
Relief Valve
Switch/Relief Valve
Check Valve
Power Heat Control Valve
Coolant Vacuum Switch Cold Open (CVSCO)
Coolant Temperature Sensor
Diagnosis
Notes
No Air Supply
Air Supply Upstream With No Vacuum To Switch/Relief Valve