For 1990-2009 cars

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

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

• | Search for bulletins.

• | Verify that the engine control module (ECM) and ECM bracket fasteners are at the correct torque.

• | Inspect the engine control system grounds for being clean, tight, and in the correct locations. Refer to Engine Controls Schematics . Ensure the resistance between the ECM housing and the battery negative cable is less than 0.5 ohms.

Fuel System | Test the fuel system for the following conditions:

• | High fuel system pressure

• | Leaking fuel injectors

| For more information, refer to Fuel System Diagnosis .