GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 2001 🢒 S/T Isuzu - 4WD 🢒 Engine 🢒 Engine Controls - 2.2L (L43) 🢒 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
    â€¢ Refer to Diagnostic System Check - Engine Controls .
    â€¢ Refer to Symptoms - Engine Controls .
    â€¢ Search for service bulletins.

Fuel System

Check the fuel injectors for a possible leak at the pintle. Refer to Fuel Injector Balance Test with Special Tool or Fuel Injector Balance Test with Tech 2 .

Additional Checks
    â€¢ Check for short between B+ and any of the ignition feed circuits. Refer to Fuse Block Details in Engine Electrical.
    â€¢ An engine with accumulated miles could experience a build up of carbon in the cylinders. This may also show symptoms of spark knock associated with a run on condition. Use ONLY an approved cleaner that is compatible with ethanol in the fuel tank.
    â€¢ Check for spark plugs with an incorrect heat range