Dieseling, Run-On. Pontiac Grand Prix 2000

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2000 🢒 Grand Prix 🢒 Engine 🢒 Engine Controls - 3.8L 🢒 Dieseling, Run-On

Checks

Action

DEFINITION: The engine continues to run after key is turned OFF, but runs very rough. If the engine runs smooth, check the ignition switch and the adjustment.

Preliminary Checks

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

•	Refer to Important Preliminary Checks.

•	Refer to Visual/Physical Checks.

Fuel System

Test the fuel injectors using the following tests:

•	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) .

•	Fuel Injector Balance Test .

Additional Check(s)

Test for a short between B+ and any of the ignition feed circuits.