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Home >> Geo >> 1994 >> Tracker Base, 1.6 U, Standard >> Repair and Diagnosis (Single Page) >> 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

PSP switch is located in power steering pump housing. PSP switch indicates to the ECM when power steering pressure is applied. ECM uses this signal to control Idle Air Control (IAC) valve to increase engine idle speed.

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