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.
1-86 Description and Operation
Positive Crankcase Ventilation (PCV) System
Positive Crankcase Ventilation (PCV) System
Overview
The PCV system circulates crankcase gases through the intake air system into the engine where they are burned. The PCV system regulates the amount of ventilated air and blowby gases to the intake manifold.
The PCV system on some vehicles will include a crankcase pressure sensor to detect a disconnection of the fresh air hose.
The PCV systems comply with on board diagnostics (OBD) PCV monitoring requirements to prevent accidental disconnection from the valve cover. For more information about the PCV monitor and crankcase pressure sensor, refer to Positive Crankcase Ventilation (PCV) System Monitor in this section.
Typical PCV System For V-Engine
Typical Quarter Turn Cam Lock Design PCV
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.