Engine Emission Control

ENGINE EMISSION CONTROL

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 law.

The engine emission control system consists of the:
- PCV system.

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 (early build engines only).
- 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 (early build engines only).

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.

Vehicle Emission Vacuum Routing

Taurus and Sable (Part 1):

Taurus and Sable (Part 2):

Taurus X With PZEV:

Taurus X With Federal Emissions: