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2008
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Ridgeline RTX
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Repair and Diagnosis
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Engine Performance
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Advanced Diagnostics
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DTC P1077: Intake Manifold Tuning (IMT) Valve Stuck in High RPM Position
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Driving Pattern
Driving Pattern
Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on.
Let the engine idle for at least 2 seconds.