Dieseling, Run-On. Buick LeSabre 2002

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2002 🢒 LeSabre 🢒 Engine 🢒 Engine Controls - 3.8L 🢒 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 Diagnostic System Check - Engine Controls .

•	Refer to Important Preliminary Checks Before Starting 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 .

Additional Checks

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