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.
HD8 CHECK THE IGNITION SYSTEM FOR CONCERNS
• For ignition coil on plug (COP) equipped vehicles, GO to JB4 and follow the pinpoint test direction.
• For ignition coil pack equipped vehicles, GO to JC4 and follow the pinpoint test direction.
Is an ignition related concern present?
Yes | No |
|---|---|
REPAIR as necessary. Clear the PCM DTCs. REPEAT the self-test. | GO to HD9 . |
HD9 RELATIVE INJECTOR FLOW TEST
Note: The IDS test referenced in this step may not be available on all vehicles. Follow the YES answer if the IDS test is not available.
• Carry out the Relative Injector Flow Test. Refer to the instruction manual provided by the scan tool manufacturer.
Are all injectors flowing correctly?
Yes | No |
|---|---|
GO to HD10 . | CHECK for a loose connection, and damaged or corroded pins. REPAIR as necessary. GO to HD10 . |
HD10 CHECK THE FUEL SYSTEM FOR CONCERNS
• GO to Pinpoint Test HC and follow the pinpoint test direction.
Is a fuel system related concern present?
Yes | No |
|---|---|
REPAIR as necessary. Clear the PCM DTCs. REPEAT the self-test. | GO to HD11 . |
HD11 CHECK THE VACUUM SYSTEM
Note: Some vacuum leaks can be heard.
• Visually inspect the vacuum hoses for signs of damage or deterioration. A collapsed vacuum hose may cause a blockage to one of the various actuators or sensors. If a blockage is found remove the blockage or install new parts as necessary.
Is the vehicle vacuum system OK?
Yes | No |
|---|
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.