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Home >> Mercury >> 1994 >> Villager LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Engine Controls - Theory & Operation - EEC-IV) >> Computerized Engine Controls >> Input Devices >> Power Steering Pressure (PSP) Switch

Power Steering Pressure (PSP) Switch

WARNING: This page is about a different car, the 1995 Ford Aerostar. However, it is still accessible from the selected car via links, so may be relevant.

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.

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