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Home >> Ford >> 1990 >> Probe LX, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - EEC-IV >> Turbocharger Check >> Compressor By-Pass Valve Function Check

Compressor By-Pass Valve Function Check

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With compressor by-pass valve removed from the vehicle, apply a vacuum of 9.8-15.7 in. Hg to small port of the valve. Blow through large port to verify air flows. If air does not flow, replace compressor by-pass valve.