Possible Causes
| Possible Causes |
|---|
| EXHAUST SYSTEM LEAK OR RESTRICTION |
| INTAKE SYSTEM LEAK OR RESTRICTION OR RESTRICTION |
| FUEL PRESSURE TOO LOW OR TOO HIGH |
| FOULED OR LEAKING FUEL INJECTOR |
| O2 SENSOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .