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Home >> Hyundai >> 1994 >> Scoupe Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Tests >> Code 3152 Or 4156 - High Boost Pressure >> System Operation
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System Operation

  1. Inspect turbocharger system outlet tubes. Ensure there is no restriction or clog. Inspect condition of control valve. See CODE 2121 (TURBO BOOST - CONTROL VALVE FAILURE). Ensure wastegate operates smoothly. Apply vacuum to actuator and monitor operation.
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