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Home >> Pontiac >> 2008 >> Grand Prix GXP >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls And Fuel - 3.8L - DTC P0385 To DTC P2108) >> DTC P0506 or P0507 >> Circuit/System Verification

Circuit/System Verification

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  1. Using a scan tool, compare the desired engine idle speed to the actual engine idle speed.
    • Actual engine idle speed should be no greater than 175 RPM below desired.
    • Actual engine idle speed should be no greater than 175 RPM above desired.
  2. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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