Emission Control System (2.4L & 2.7L): General: Troubleshooting
PROBLEM SYMPTOM TABLE - EMISSIONS CONTROL SYSTEM
| Symptom | Probable cause | Remedy |
|---|---|---|
| Engine will not start or hard to start | Vacuum hose disconnected or damaged | Repair or replace |
| EGR valve is not closed | Repair or replace | |
| Malfunction of the EVAP Canister Purge | Repair or replace | |
| Solenoid Valve | Repair or replace | |
| Rough idle or engine stalls | Vacuum hose disconnected or damaged | Repair or replace |
| EGR valve is not closed | Repair or replace | |
| Malfunction of the PCV valve | Replace | |
| Malfunction of the EVAP Canister Purge System | Check the system; if there is a problem, check its component parts | |
| Excessive oil consumption | Positive crankcase ventilation line clogged | Check positive crankcase ventilation system |
| Poor fuel mileage | Malfunction of the exhaust gas recirculation | Check the system; if there is a problem, check its component parts |