Possible Cause
- Misfire.
- Front HO2S malfunction.
- Front HO2S heater malfunction.
- Fuel pressure regulator malfunction.
- Fuel pump malfunction.
- Fuel filter clogged or restricted.
- Fuel lines or fuel pump leaking.
- Exhaust system leak.
- Purge Control Solenoid Valve (PCSV) malfunction.
- PCSV hoses improperly connected.
- Low compression.