Dieseling, Run-On Symptom
DEFINITION:
Engine continues to run after key is turned "OFF," but runs very rough. If engine runs smooth, check ignition switch and adjustment.
DIESELING, RUN-ON SYMPTOM
| Step |
Action |
Values |
Yes |
No |
| 1 |
Was the "On-Board Diagnostic (OBDII) System Check" performed? |
- |
Go to Step 2 |
Go to On-Board Diagnostic (OBD-II) System Check |
| 2 |
- Perform a bulletin search.
- If a bulletin that addresses the symptom is found, correct the condition as instructed in the bulletin.
Was a bulletin found that addresses the symptom? |
- |
Verify repair |
Go to Step 3 |
| 3 |
Was a visual/physical check performed? |
- |
Go to Step 4 |
Go to VISUAL/PHYSICAL CHECK |
| 4 |
- Check for a short between B+ and any of the ignition feed circuits.
- Check for monitor of ignition switch condition by Tech 2.
- If a problem is found, repair as necessary.
Was a problem found? |
- |
Verify repair |
Go to Step 5 |
| 5 |
- Review all diagnostic procedures within this table.
- If all procedures have been completed and no malfunctions have been found, review/inspect the following:
- Visual/physical inspection
- Engine compression
- Spark Plug
- Injector fuel leak
- Tech 2 data
- Freeze Frame data/Failure Records butter
- All electrical connections within a suspected circuit and/or system
- If a problem is found, repair as necessary.
Was a problem found? |
- |
Verify repair |
- |