For 1990-2009 cars

Checks | Action
--- | ---
Definition: Engine continues to run after key is turned OFF, but runs very rough. If engine runs smooth, check the ignition switch and adjustment.
Preliminary Checks |

• | Refer to Powertrain On Board Diagnostic (OBD) System Check .

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

• | Refer to Visual/Physical Checks in Symptoms .

• | Search for bulletins.

Fuel System | Check the fuel injectors.

• | Refer to Fuel Injector Solenoid Coil Test - Engine Coolant Temperature Between 10-35 Degrees C (50-95 Degrees F) .

• | Refer to Fuel Injector Solenoid Coil Test - Engine Coolant Temperature Outside 10-35 Degrees C (50-95 Degrees F) .

Additional Check(s) | Check for short between battery positive and any of the ignition feed circuits. Refer to Power Distribution Schematics .