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Home >> Pontiac >> 1985 >> T1000 L4-98 1.6L >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Thermostatic Air Cleaner >> Thermostatic Air Cleaner Vacuum Switch >> Description and Operation >> Thermostatic Air Cleaner Thermal Check Valve (TAC-TCV)

Thermostatic Air Cleaner Thermal Check Valve (TAC-TCV)


This valve is a one-way check valve and closes at 80° F. When the valve's temperature reaches 95° F, it opens and allows vacuum to flow in both directions.