GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2002 🢒 Park Avenue 🢒 Engine 🢒 Engine Electrical 🢒 Dieseling, Run-On

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 Important Preliminary Checks in Symptoms - Engine Controls .
    • Refer to Visual/Physical Checks in Symptoms - Engine Controls .
    • Search for bulletins.

Fuel System

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

Additional Checks

Check for short between B+ and any of the ignition feed circuits. Refer to Power Distribution Schematics .