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Home >> Saturn >> 2000 >> SW2 Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Testing & Engine Component Testing >> Emission Systems & Subsystems >> Air Injection >> AIR Pump (Belt-Driven)

AIR Pump (Belt-Driven)

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Accelerate engine to approximately 1500 RPM and observe airflow from hoses. If airflow increases as engine is accelerated, pump is working properly. If airflow does not increase, check hoses, pump belt tension, leaky valves or defective air injection pump.