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.
1-82 Description and Operation
Intake Air Systems
Intake Air Systems
Overview
The intake air system provides clean air to the engine, optimizes airflow, and reduces unwanted induction noise. The intake air system consists of an air cleaner assembly, resonator assemblies, and hoses. Some vehicles use a hydrocarbon filter trap to help reduce emissions by preventing fuel vapor from escaping into the atmosphere from the intake when the engine is OFF. It is typically located inside the intake air system. The mass airflow (MAF) sensor is attached to the air cleaner assembly and measures the volume of air delivered to the engine. The hydrocarbon trap is part of the evaporative emission (EVAP) system. For more information on the EVAP system, refer to Evaporative Emission (EVAP) Systems in this section. The MAF sensor can be replaced as an individual component. The intake air system also contains a sensor that measures the intake air temperature, which is integrated with the MAF sensor. For additional information on the intake air system components, refer to Engine Control Components in this section. Intake air components can be separate components or part of the intake air housing. The function of a resonator is to reduce induction noise. The intake air components are connected to each other and to the throttle body assembly with hoses.
Typical Intake Air System
Intake Air System | Component |
|---|---|
1 | Air Cleaner Inlet |
2 | Air Cleaner Element |
3 | Mass Airflow/Intake Air Temperature Sensor |
4 | Air Cleaner Outlet |
5 | Crankcase Pressure Sensor (If Equipped) |
6 | Throttle Body |
7 | Upper Intake Manifold |
8 | Exhaust Gas Recirculation (EGR) |
9 | EVAP Canister Vent Valve |
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.