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Home >> Dodge and Ram >> 1990 >> Caravan C/V, Van Cargo Extended >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Air Injection System Tests >> Air Supply Pump

Air Supply Pump

Check and adjust belt tension (if necessary). Disconnect air supply hose from by-pass control valve. Start engine. Pump is operating correctly if airflow is felt at pump outlet and airflow increases as engine speed increases. If this condition is not met, replace pump.

CAUTION: DO NOT pry on the air pump to adjust belt tension or housing may collapse.
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