For 1990-2009 cars

#### Dieseling, Run-On Symptom

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
Definition: Engine continues to run after key is turned OFF, but runs very rough. If engine runs smooth, check ignition switch and adjustment.
1 | Was the Powertrain On-Board Diagnostic (OBD) System Check performed? | -- | Go to Step 2 | Go to Powertrain On Board Diagnostic (OBD) System Check
2 |

1. Perform a bulletin search.
2. 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?

--

Go to Step 6

Go to Step 3

3 | Was visual/physical check performed? | -- | Go to Step 4 | Go to Important Preliminary Checks
4 |

1. Check for leaking fuel injectors. Refer to Fuel System Diagnosis .
2. If a problem is found, repair as necessary.

Was a problem found?

--

Go to Step 6

Go to Step 5

5 |

1. Review all diagnostic procedures within this table.
2. If all procedures have been completed and no malfunctions have been found, review/inspect the following items:

• | Visual/physical inspection.

• | Scan tool data.

• | All electrical connections within a suspected circuit and/or system.

3. If a problem is found, repair as necessary.

Was a problem found?

--

Go to Step 6

Check for Service Bulletins

6 | Operate vehicle within the conditions under which the original symptom was noted. Does the system now operate properly? | -- | System OK | Go to Step 2