For 1990-2009 cars

Inspections | Action
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DEFINITION: Engine continues to run after key is turned OFF, but runs very rough. If the engine runs smooth, inspect the ignition switch and the ignition switch adjustment.
Preliminary Inspections |

• | Refer to Important Preliminary Inspections Before Starting in Symptoms - Engine Controls .

• | Search for bulletins.

• | Verify that the powertrain control module (PCM) grounds are clean, tight, and in the proper locations. Refer to Power and Grounding Component Views in Wiring Systems and Engine Controls Schematics .

Fuel System |

• | Inspect the fuel pressure regulator hose for the presence of fuel. Replace the fuel pressure regulator if fuel is found in the hose. Refer to Fuel Pressure Regulator Replacement .

• | Test the fuel injectors. Refer to Fuel Injector Balance Test with Special Tool , Fuel Injector Balance Test with Tech 2 , or Fuel Injector Solenoid Coil Test .