Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2007EDGE FWD V6-3.5LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSDESCRIPTION AND OPERATIONENGINE EMISSION CONTROL
2007 Ford Edge FWD V6-3.5L
Engine Emission Control
2007 Ford Edge FWD V6-3.5LSECTION Engine Emission Control
ENGINE EMISSION CONTROL
CAUTION: Do not permanently remove any part of the engine emission control system. Operating the engine without the engine emission control system intact will reduce fuel economy and engine ventilation. This will weaken engine performance and shorten engine life.
The engine emission control system consists of the:
- positive crankcase ventilation (PCV) system.
Positive Crankcase Ventilation (PCV) System
The PCV system:
- uses intake manifold vacuum to ventilate blow-by fumes from the crankcase.
- returns the fumes to the intake manifold for combustion.
The PCV system consists of the:
- PCV heater element.
- crankcase ventilation tube.
- PCV valve.
The PCV valve:
- varies the amount of blow-by gases returned to the intake manifold based on available engine vacuum.
- prevents combustion gases backfiring into the crankcase.
- utilizes an internal heater.
The PCV heater element:
- heats the ventilating air and blow-by gases going to the intake manifold.
- is retained by 2 self-tapping screws and mounted in the intake manifold.
- has an optional set of mounting holes located in the intake manifold.
CAUTION: Do not permanently remove any part of the engine emission control system. Operating the engine without the engine emission control system intact will reduce fuel economy and engine ventilation. This will weaken engine performance and shorten engine life.
The engine emission control system consists of the:
- positive crankcase ventilation (PCV) system.
Positive Crankcase Ventilation (PCV) System
The PCV system:
- uses intake manifold vacuum to ventilate blow-by fumes from the crankcase.
- returns the fumes to the intake manifold for combustion.
The PCV system consists of the:
- PCV heater element.
- crankcase ventilation tube.
- PCV valve.
The PCV valve:
- varies the amount of blow-by gases returned to the intake manifold based on available engine vacuum.
- prevents combustion gases backfiring into the crankcase.
- utilizes an internal heater.
The PCV heater element:
- heats the ventilating air and blow-by gases going to the intake manifold.
- is retained by 2 self-tapping screws and mounted in the intake manifold.
- has an optional set of mounting holes located in the intake manifold.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.