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.
1-4 Description and Operation
Vehicle Emission Control Information (VECI)
Vehicle Emission Control Information (VECI)
VECI Decal
Each vehicle has a VECI decal containing emission control information that applies specifically to the vehicle and engine. The specifications on the decal are critical to repairing the emissions systems.
Typical VECI Decal
VECI Decal Location
The decal is typically located on the underside of the hood or on the radiator support sight shield.
Engine/Evaporative Emission (EVAP) System Information
Manufacturers must use a standardized system for identifying their individual engine families. The system described below was developed by the Environmental Protection Agency (EPA) in 1991 to meet new regulatory requirements for 1994 and later model years.
The engine family group and evaporative family name consist of 12 characters each.
Both the engine family group and the evaporative family name are listed in the box on the emission decal in the area marked as engine evaporative family information. The first line contains engine size and the 12-character engine family group. The second line contains the 12- character evaporative family name information. Both the engine family group and the evaporative family name are specific to the vehicle. Refer to the Engine Family Group and the Evaporative Family Name worksheet for decoding information.
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.