Mercury Workshop Service and Repair Manuals > Marquis L4-140 2.3L VIN A 1-bbl (1986) > Powertrain Management | Emission Control Systems | Thermostatic Air Cleaner | Thermostatic Air Cleaner Vacuum Switch | Component Information | Testing and Inspection

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Thermostatic Air Cleaner Vacuum Switch: Testing and Inspection
Air Cleaner Cold Weather Modulator

A 54 kPa (16 inches Hg) vacuum applied to motor side of the modulator holds or leaks as follows:

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