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Home >> Mercury >> 1994 >> Villager LS >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Power Steering Pressure (PSP) Switch
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Power Steering Pressure (PSP) Switch

The PSP switch monitors power steering pressure and signals PCM to adjust engine idle speed under load conditions. Switch is located in high pressure line from PSP pump to steering rack assembly.