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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 49 (Engine Control System - 3.8L (Troubleshooting & Diagnosis)) >> Troubleshooting >> Manifold Absolute Pressure (MAP) Sensor Diagnosis >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

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

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