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Home >> Ford >> 1989 >> Probe GL, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> THERMACTOR System >> Operation >> Pulse Air Valve

Pulse Air Valve

The Pulse Air Valve (PAV) replaces the air pump on some thermactor systems. It permits air to be drawn into exhaust system by vacuum created by exiting exhaust pulse. This allows fresh air to complete oxidation of exhaust gases and blocks backflow of high pressure exhaust pulses.