Possible Causes
WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| RESTRICTED FUEL SUPPLY LINE |
| FUEL PUMP INLET STRAINER PLUGGED |
| FUEL PUMP MODULE |
| O2 SIGNAL CIRCUIT |
| O2 RETURN CIRCUIT |
| O2 SENSOR HEATER OPERATION |
| O2 SENSOR |
| MAP SENSOR OPERATION |
| ECT SENSOR OPERATION |
| ENGINE MECHANICAL |
| FUEL FILTER/PRESSURE REGULATOR (HIGH) |
| PCM |
Always perform PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.