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Home >> Pontiac >> 2008 >> Grand Prix GXP >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Controls And Fuel - 3.8L - Troubleshooting & Diagnosis) >> Manifold Absolute Pressure Sensor Diagnosis >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

Poor idle characteristics may be due to uncontrolled fueling caused by an open or high resistance in the heated oxygen sensor (HO2S) 1 low signal circuit. Before replacing any component, ensure that this condition does not exist.

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