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Lancer Evolution GSR
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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Engine Control System - Lancer Evolution
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Engine Control System Diagnosis
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Symptom Procedures
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Inspection Procedure 1: Throttle Valve Will Not Fully Open Or Close
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Troubleshooting Hints (The Most Likely Causes For This Case)
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Troubleshooting Hints (The Most Likely Causes For This Case)
Malfunction of the throttle body.
Malfunction of the accelerator pedal position sensor.
Malfunction of the engine control module (ECM).