Dieseling, Run-On. Chevrolet Impala 2000

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2000 🢒 Impala 🢒 Engine 🢒 Engine Controls - 3.4L 🢒 Dieseling, Run-On

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:

•	Fuel Injector Balance Test

•	Fuel Injector Solenoid Coil Test - Engine Coolant Temperature Between 10-35 Degrees C (50-95 Degrees F)

•	Fuel Injector Solenoid Coil Test - Engine Coolant Temperature Outside 10-35 Degrees C (50-95 Degrees F)

Additional

Test for a short between B+ voltage and any of the ignition feed circuits. Refer to Wiring Repairs in Wiring Systems.