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 .

• | Refer to Visual/Physical Checks .

• | Search for bulletins.

Fuel System | Check the fuel injectors. Refer to Fuel Injector Balance Test , Fuel Injector Solenoid Coil Test .
Additional Check(s) | Check for short between battery positive voltage and any of the ignition feed circuits. Refer to Fuse Block Details in Electrical Diagnosis.