Engine Emission Control System Ford Crown Victoria II

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

Scheme 1

The engine emission control consists of the

1. positive crankcase ventilation (PCV) system.
2. exhaust gas recirculation (EGR) system.

Scheme 2

The Vehicle Emission Control Information (VECI) decal shows

1. components of the emission control system.
2. the correct vacuum hose routing.
3. the color stripe of the vacuum hoses.

For additional information, refer to IDENTIFICATION CODES .

The PCV system uses intake manifold vacuum to ventilate the crankcase and return the fumes to the intake manifold for combustion.

Scheme 3

The EGR system returns a portion of the exhaust gas to the intake manifold to reduce the combustion temperature. This results in lower nitrous oxide formation.

The powertrain control module (PCM) controls the EGR vacuum regulator solenoid. The EGR vacuum regulator solenoid controls the vacuum to the EGR valve. When the EGR valve opens, exhaust gas flows to the intake manifold. The EGR transducer measures the flow through the EGR valve to exhaust manifold tube and sends a signal to the powertrain control module.

The PCV valve

1. controls the amount of ventilating air and blow-by gases going to the intake manifold.
2. prevents a backfire from reaching the crankcase.

The EGR system module to exhaust manifold tube

1. connects the exhaust manifold to the EGR valve.

The EGR system module transducer

1. monitors the EGR system module flow rate through the EGR to exhaust manifold tube.
2. sends an EGR system module flow rate signal to the powertrain control module.

The EGR vacuum regulator solenoid uses input from the powertrain control module to change the EGR system module operation.

Refer to INTRODUCTION - CNG, FLEX-FUEL & GASOLINE .

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1. Remove the appearance cover.
2. Remove the vacuum lines and the electrical connector.
3. Remove the cables from the intake manifold shield.
4. Remove the bolts from the intake manifold shield.
5. Remove the EGR system module tube nut from the EGR system module.
6. Remove the bolts and the EGR system module.
7. To install, reverse the removal procedure. Install a new EGR system module gasket with the side with the raised circle facing the intake manifold.

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1. Disconnect the electrical connector and the vacuum hoses.
2. Disconnect the vacuum hose.
3. Remove the bolt and disconnect the accelerator cables from the retainer.
4. Remove the bolt and the accelerator cable bracket.
5. Disconnect the exhaust gas recirculation (EGR) tube from the EGR valve.
6. Remove the bolts, ESM valve, and the gasket.
7. To install, reverse the removal procedure. Install a new EGR system module gasket with the side with the raised circle facing the intake manifold.

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1. Disconnect the differential pressure feedback EGR hoses.
2. Disconnect the EGR tube.
3. Remove the two bolts, the EGR valve and the gasket.
4. To install, reverse the removal procedure.

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1. Remove the air cleaner outlet tube. For additional information, refer to «INTAKE AIR DISTRIBUTION & FILTERING»(/ford/crown-victoria/ii-1997-2011/remont/removal-installation/#intake-air-distribution-filtering) .
2. Remove the cables from the intake manifold shield.
3. Remove the bolts and the intake manifold shield.
4. Remove the nut at the EGR system module.
5. Raise the vehicle. For additional information, refer to «JACKING & LIFTING»(/ford/crown-victoria/ii-1997-2011/remont/hoistjack/#jacking-lifting) .
6. Remove the RH catalytic converter assembly. For additional information, refer to «EXHAUST SYSTEM»(/ford/crown-victoria/ii-1997-2011/remont/exhaust/#exhaust-system) .
7. Remove the nut at the exhaust manifold.
8. Lower the vehicle.
9. Remove the tube.
10. To install, reverse the removal procedure.

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1. Disconnect the electrical connector and the vacuum hoses.
2. Disconnect the vacuum hose.
3. Remove the bolt and disconnect the accelerator cables from the retainer.
4. Remove the bolt and the accelerator cable bracket.
5. Disconnect the exhaust gas recirculation (EGR) tube from the EGR system module.
6. Raise and support the vehicle. For additional information, refer to «JACKING & LIFTING»(/ford/crown-victoria/ii-1997-2011/remont/hoistjack/#jacking-lifting) .
7. Remove the EGR system module tube.
8. To install, reverse the removal procedure.

Removal And Installation

Note. 4.6L (2V) shown; 4.6L (4V) similar.

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Scheme 36

1. Remove the resonator. For additional information, refer to «INTAKE AIR DISTRIBUTION & FILTERING»(/ford/crown-victoria/ii-1997-2011/remont/removal-installation/#intake-air-distribution-filtering) .
2. Remove the positive crankcase ventilation (PCV) valve from the grommet.
3. Remove the PCV valve from the crankcase vent connector and hose.
4. To install, reverse the removal procedure.

Note. 4.6L (2V) shown; 4.6L (4V) similar.

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1. Remove the engine appearance cover.
2. Remove the idle air control (IAC) tube from the air cleaner outlet tube.
3. Remove the crankcase ventilation tube at the air cleaner outlet tube.
4. Remove the crankcase ventilation tube at the valve cover.
5. To install, reverse the removal procedure.

See also:
• IDENTIFICATION CODES
• INTRODUCTION - CNG, FLEX-FUEL & GASOLINE
• INTAKE AIR DISTRIBUTION & FILTERING
• JACKING & LIFTING
• EXHAUST SYSTEM