Possible Causes
| Possible Causes |
|---|
| AIR INTAKE SYSTEM PLUMBING LEAKING OR RESTRICTED |
| VACUUM LEAK |
| EGR COLD HOSE LEAKING OR DAMAGED |
| PCV TUBE LEAKING OR BROKEN |
| EJECTOR TEE HOSES REVERSED AT INTAKE MANIFOLD AND PURGE SOLENOID |
| INTAKE MANIFOLD LEAK |
| RESTRICTION IN THE EXHAUST SYSTEM |
| INTERNAL ENGINE MECHANICAL COMPONENTS |
| PURGE SOLENOID LEAKING |
| THROTTLE BODY |
| PCV VALVE |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .