Overview
Note. Do not permanently remove or render inoperative any part of the vehicle emission control system including related hardware. Failure to comply may violate applicable state and federal laws.
Note. The vehicle emission routing diagrams are contained in the Description and Operation of the Evaporative Emissions.
Refer to: Evaporative Emissions - Overview ( EVAPORATIVE EMISSIONS - OVERVIEW .
The PCV system uses intake manifold vacuum to ventilate blow-by vapors and evaporated oil from the crankcase and returns them to the intake manifold for combustion. The PCV valve varies the amount of blow-by vapors and evaporated oil returned to the intake manifold.
System Operation
ENGINE CONTROLS - DESCRIPTION & OPERATION (EXCEPT DIESEL & HYBRID) .
Component Description
ENGINE CONTROLS - DESCRIPTION & OPERATION (EXCEPT DIESEL & HYBRID) .
| Ford diagnostic equipment |
GENERAL EQUIPMENT
- For PCM Diagnostic Trouble Codes (DTCs), REFER to: Electronic Engine Controls ( «ELECTRONIC ENGINE CONTROLS»(ref-515938-S29497606342012120400000) ). MIL Code List. For driveability symptoms without Diagnostic Trouble Codes (DTCs), ENGINE CONTROLS - SYMPTOM CHARTS (EXCEPT DIESEL & HYBRID) .