Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
Symptom Charts 3-7
No Diagnostic Trouble Codes (DTCs) Present Symptom
Charts
(Continued)
SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
|---|---|
Exhaust System | GO to Pinpoint Test HF. |
Positive Crankcase Ventilation (PCV) System | GO to Pinpoint Test HG. |
EVAP System | GO to Pinpoint Test HX. |
Intake Air System | GO to Pinpoint Test HU. |
Starting System | REFER to the Workshop Manual Section 303-06, Starting System to diagnose the engine cranks slowly symptom. |
Mass Airflow (MAF) Sensor | GO to Pinpoint Test DC. |
Additional Testing | GO to Pinpoint Test Z. |
Chart 3
— Starting Concerns: No Start (Engine Cranks)
NOTE: An extended crank because of a no start may load the exhaust system with raw fuel, damaging the catalytic converter after the engine starts.
SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
|---|---|
Add On Anti-Theft Devices | Visual. CHECK with the customer. |
Fuel And Ignition | GO to Pinpoint Test A. |
Cold Start System | GO to Pinpoint Test AB. |
Exhaust System Restrictions | GO to Pinpoint Test HF. |
Base Engine | REFER to the Workshop Manual Section 303-00, Engine System, Diagnosis And Testing to continue diagnosis. |
Additional Testing | GO to Pinpoint Test Z. |
Chart 4
— Unique Idle Concerns: Slow Return To Idle
SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
|---|---|
Vacuum Leaks, Throttle Body | Visual. |
Positive Crankcase Ventilation (PCV) System | GO to Pinpoint Test HG. |
Intake Air System Leaks | GO to Pinpoint Test HU. |
Chart 5
— Unique Idle Concerns: Fast Idle — Diesels/Runs On
NOTE: For E-Series, Escape/Kuga, F-650 / F-750, Focus, Motorhome, Transit and Transit Connect, an elevated idle is present on new vehicles. Verify the vehicle has been driven for 5 consecutive miles, or drive the vehicle for 5 consecutive miles if necessary, before continuing diagnosis.
2016 Powertrain Control/Emissions Diagnosis, Gasoline Engines, 3/2015
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.