Contents Section: Auxiliary Emission Control Systems All sections

Emission Control System Ford Taurus X I

Auxiliary Emission Control Systems 4 illustrations ~342 words

Material

ItemSpecificationFill Capacity
Motorcraft SAE 5W-20 Premium Synthetic Blend Motor Oil XO-5W20-QSP (US); Motorcract SAE 5W-20 Super Premium Motor Oil CXO-5W20-LSP12 (Canada); or equivalentWSS-M2C930-A

Material

TORQUE SPECIFICATIONS

DescriptionNm
PCV heater element retaining screws6

TORQUE SPECIFICATIONS

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

  1. PCV system.

PCV System

The PCV system

  1. uses intake manifold vacuum to ventilate blow-by fumes from the crankcase.
  2. returns the fumes to the intake manifold for combustion.

The PCV system consists of the

  1. PCV heater element (early build engines only).
  2. crankcase ventilation tube.
  3. PCV valve.

The PCV valve

  1. varies the amount of blow-by gases returned to the intake manifold based on available engine vacuum.
  2. prevents combustion gases backfiring into the crankcase.
  3. utilizes an internal heater (early build engines only).

The PCV heater element

  1. heats the ventilating air and blow-by gases going to the intake manifold.
  2. is retained by 2 self-tapping screws and mounted in the intake manifold.
  3. has an optional set of mounting holes located in the intake manifold.

Scheme 1

Scheme 1: Vehicle Emission Vacuum Routing
ItemPart NumberDescription
16A505LH valve cover
29F805Air cleaner outlet tube
39G641Evaporative emission (EVAP) canister purge valve
49S455Upper intake manifold
56A666PCV valve
66582RH valve cover
79E857EVAP canister
89034Fuel tank filler pipe assembly
99H307Fuel pump (FP) module
109P860Fuel tank

Scheme 2

Scheme 2
ItemPart NumberDescription
16A505LH valve cover
29F805Air cleaner outlet tube
39G641Evaporative emission (EVAP) canister purge valve
49S455Upper intake manifold
56A666PCV valve
66582RH valve cover
79E857EVAP canister
89034Fuel tank filler pipe assembly
99H307Fuel pump (FP) module
109P860Fuel tank

Scheme 3

Scheme 3
ItemPart NumberDescription
16A505LH valve cover
29F805Air cleaner outlet tube
39G641Evaporative emission (EVAP) canister purge valve
49S455Upper intake manifold
56A666PCV valve
66582RH valve cover
79E857EVAP canister
89034Fuel tank filler pipe assembly
99H307Fuel pump (FP) module
109275Fuel level sensor
119B593Fuel vapor valve
129B593Fuel vapor valve
139P860Fuel tank

Refer to the Introduction - Gasoline Engines article.

Positive Crankcase Ventilation (PCV) System Components - Exploded View

Note. Early build engine with PCV heater element and electric heated PCV valve shown, late build engine without PCV heater element and standard PCV valve similar.

Scheme 4

Scheme 4: Positive Crankcase Ventilation (PCV) System Components - Exploded View
ItemPart NumberDescription
1PCV heater element retainer screws (2 required) (early build only)
26A664Crankcase ventilation tube
3Crankcase ventilation tube spring clamp (part of 6K817)
49F695PCV heater element (early build only)
59J469PCV heater element O-ring (early build only)
614A464PCV heater element electrical connector (early build only)
714A464PCV valve electrical connector (early build only)
8PCV valve O-ring (part of 6A666)
96A666PCV valve
  1. For additional information, refer to the procedures.

Positive Crankcase Ventilation (PCV) Valve

ItemSpecification
Motorcraft SAE 5W-20 Premium Synthetic Blend Motor Oil XO-5W20-QSP (US); Motorcraft SAE 5W-20 Super Premium Motor Oil CXO-5W20-LSP12 (Canada); or equivalentWSS-M2C930-A

Material

REMOVAL AND INSTALLATION

Early build engines

  1. Disconnect the PCV valve electrical connector.
  2. Disconnect the crankcase ventilation tube from the PCV valve.
  3. Rotate the PCV valve counterclockwise and remove from the valve cover. Discard the PCV valve.
  4. To install, reverse the removal procedure.

Positive Crankcase Ventilation (PCV) Heater Element

ItemSpecification
Motorcraft SAE 5W-20 Premium Synthetic Blend Motor Oil XO-5W20-QSP (US); Motorcraft SAE 5W-20 Super Premium Motor Oil CXO-5W20-LSP12 (Canada); or equivalentWSS-M2C930-A

Material

  1. Disconnect the PCV heater element electrical connector.
  2. Release the spring tension clamp and remove the crankcase ventilation tube from the PCV heater element.
  3. Remove the 2 PCV heater element retainer screws. To install, tighten to 6 Nm (53 lb-in).
  4. Remove the PCV heater element from the intake manifold.
  5. To install, reverse the removal procedure.