For 1990-2009 cars

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

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

• | Search for bulletins.

• | Check the powertrain control module (PCM) grounds for being clean, tight, and in the proper locations. Refer to Engine Controls Schematics .

Fuel System | Inspect the injectors for a leaking condition. Refer to Fuel System Diagnosis for the proper procedure.