- Faulty oxygen sensors
- Vacuum leaks
- Faulty fuel pressure regulator
- Dirty or clogged fuel injectors
- Faulty MAP sensor
- Faulty throttle position sensor
- Faulty EGR valve
- Faulty PCV valve
- Faulty ignition components (spark plugs, wires, distributor cap and rotor)
- Computer problems (PCM or ECM)
Recommended Actions:
1. Check for any vacuum leaks.
2. Inspect and clean the oxygen sensors if needed. Replace the oxygen sensors if they are faulty.
3. Inspect the fuel pressure regulator for vacuum leaks or other issues. Replace the fuel pressure regulator if necessary.
4. Clean or replace the fuel injectors if necessary.
5. Check the MAP sensor for proper operation. Replace the MAP sensor if necessary.
6. Inspect the throttle position sensor for proper operation. Replace the throttle position sensor if needed.
7. Inspect and test the EGR valve. Clean the EGR valve and passage or replace the valve if needed.
8. Check the PCV valve. Replace the valve if it is plugged.
9. Check the ignition system components (spark plugs, wires, distributor cap, and rotor) for proper operation and replace any faulty components if necessary.
10. Contact a qualified technician to diagnose and repair any computer problems if they exist.
