Dieseling, Run-On. Buick GL7 (Export) 2000

For 1990-2009 cars

Inspection/Test | 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

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

• | Refer to Intermittent Conditions .

• | Search for bulletins.

Fuel System

Test the fuel injectors. Refer to the following procedures:

1. Fuel Injector Balance Test
2. Fuel Injector Solenoid Coil Test - Engine Coolant Temperature Between 10-35 Degrees C (50-95 Degrees F)
3. Fuel Injector Solenoid Coil Test - Engine Coolant Temperature Outside 10-35 Degrees C (50-95 Degrees F)

Additional | Test for a short between battery positive voltage and any of the ignition feed circuits. Refer to Wiring Repairs in Wiring Systems.