Possible Causes
- Camshaft Position (CMP) sensor malfunction.
- CKP sensor malfunction.
- EGR system malfunction.
- Excessive air suction in intake-air system (between MAF sensor and dynamic chamber).
- Fuel lines leaking.
- Fuel pressure regulator malfunction.
- Fuel pump malfunction.
- Ignition coil malfunction.
- Mass Airflow (MAF) sensor contamination.
- Secondary ignition system malfunction.
- PCV valve malfunction.
- Plugged fuel filter.
- Plugged fuel line.
- Poor connector connection or related wiring harness malfunction.
- Purge solenoid valve malfunction.
- Vacuum hoses damaged or improperly connected.