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Home >> Volkswagen >> 1989 >> Fox Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Theory/Operation >> Computerized Engine Controls >> Control Unit >> Idle Speed Stabilizer Control Unit
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Idle Speed Stabilizer Control Unit

This unit is located near the fuse relay panel. Idle speed stabilizer control unit receives signals from ignition coil tach signal. When engine speed drops below 750 RPM, idle speed stabilizer control unit energizes the auxiliary air regulator to raise engine speed.

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