Dieseling (Run-On)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2000 Isuzu VehiCROSS, 2000 Isuzu Trooper, 2000 Isuzu Rodeo, 2000 Isuzu Hombre, and 2000 Isuzu Amigo. However, it is still accessible from the selected car via links, so may be relevant.

Check for leaking injectors.
Check for binding throttle linkage.
Check for vacuum leaks.
Check for carbon build-up in cylinders.
Check for poor fuel quality.
Check ignition timing.
Check engine RPM.
Check engine for overheating.
Check for excessive use of fuel additives.
Check for shorts between positive battery terminal and all ignition feed circuits.