Intake Air System and Exhaust System Symptom Troubleshooting Index (3.0L Engine)

Symptom	Diagnostic procedure	Also check for
Engine abnormal noise while fuel cut-off control	Check for PGM-FI DTCs - Refer to: Fuel and Emissions Systems DTC Troubleshooting Index(3.0L Engine (USA/Canada models)) or Fuel and Emissions Systems DTC Troubleshooting Index . Inspect the turbocharger bypass control valve vacuum hose for squashes or damages. Check the turbocharger bypass control valve - Refer to: Turbocharger Bypass Control Valve Inspection(2.0L Engine) or Turbocharger Bypass Control Valve Inspection(3.0L Engine) .
Engine low power	Check for PGM-FI DTCs - Refer to: Fuel and Emissions Systems DTC Troubleshooting Index(3.0L Engine (USA/Canada models)) or Fuel and Emissions Systems DTC Troubleshooting Index . Troubleshoot the turbocharger under boost problem . Inspect the intercooler for foreign materials or clogging. Inspect the intake air system for clogged. - Air cleaner element - Intercooler core