Evaporative Emissions Lincoln Town Car III рестайлинг

GENERAL SPECIFICATIONS

GENERAL SPECIFICATIONS

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

The evaporative emission system

1. prevents hydrocarbon emissions from reaching the atmosphere.
2. stores fuel vapors in the evaporative emissions (EVAP) canister that are generated during vehicle operation, hot soak or vehicle refueling, until they can be consumed by the engine during normal engine operation.
3. routes the stored fuel vapors to the engine during engine operation.
4. is controlled by the powertrain control module (PCM), which uses various sensor inputs to calculate the desired amount of EVAP purge flow. The PCM regulates the purge flow induced by the application of intake manifold vacuum, by varying the duty cycle applied to the canister purge valve.

The fuel vapors are routed

1. from the fuel tank through the fill limit valve and fuel vapor vent valve.
2. to the EVAP canister(s) through a vapor tube.
3. to the engine when the EVAP canister purge valve is opened by the PCM.

The fuel tank pressure (FTP) sensor

1. is part of the fuel vapor control tube assembly valve.
2. monitors the pressure levels in the fuel tank.
3. communicates the pressure reading to the PCM during the OBD II leak test.

The EVAP canister

1. is located under the rear of the vehicle, just behind the fuel tank.
2. contains activated carbon.
3. stores fuel vapors.

The fuel tank filler cap

1. relieves system vacuum below 3.8 kPa (15.26 inches H 2 O).

The EVAP canister vent solenoid

1. is normally open.
2. seals the evaporative emissions system for the inspection and maintenance (I/M 240) test and OBD II leak and pressure tests.
3. is mounted to the evaporative emissions canister.
4. is repaired as a separate item.

The EVAP canister purge valve

1. is normally closed.
2. regulates the purging of the EVAP canister.
3. is controlled by the PCM.

The EVAP system monitor

1. is a self-test strategy within the PCM, which tests the integrity of the EVAP system.
2. monitors the EVAP system for leaks.
3. monitors electronic EVAP components for abnormally high or low voltages.
4. monitors for correct EVAP system operation.
5. uses negative and positive leak test methods to test and activate the EVAP system.

The EVAP Running Loss System leak test

1. utilizes intake manifold vacuum to test the system and involves several stages.

Refer to the INTRODUCTION - GASOLINE ENGINES article.

Evaporative Emission System Leak Test

Special Tools Illustration Tool Name Tool Number VACUTEC Smoke Machine Fuel Evaporative Emission System Tester 218-0002 or equivalent Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool

Scheme 1

Scheme 2

Phase 1 - Leak Verification

1. Disconnect the upper vapor tube-to-evaporative emission (EVAP) purge valve quick connect coupling. For additional information, refer to «FUEL SYSTEM - GENERAL INFORMATION»(/lincoln/town-car/iii-2003-2011/remont/fuel-system/#fuel-system-general-information) article.
2. Connect the smoke machine emission tester to the upper EVAP canister purge valve fitting. For additional information, refer to the manufacturer's instructions.
3. Connect the scan tool and open the EVAP canister purge valve.
4. Using the scan tool, close the canister vent solenoid.
5. Using the smoke machine, pressurize the EVAP system.
6. Monitor the indicator flag on the smoke machine leak tester. If the measurement is below the indicator flag, the system has passed the leak test and the test procedure is complete. If the measurement is above the indicator flag, the system has failed the leak test. Proceed to «PHASE 2 - SYSTEM LEAK CHECK»(/lincoln/town-car/iii-2003-2011/remont/auxiliary-emission-control-systems/#evaporative-emissions__phase-2-system-leak-check) .

Phase 2 - System Leak Check

1. Introduce smoke from the smoke machine into the EVAP system. For additional information, refer to the manufacturer's instructions.
2. Use the halogen light provided with the smoke machine to look for smoke coming from the EVAP system. This would indicate a leak point.
3. Repair any leaks as necessary.
4. Repeat the leak test until the system passes.

Scheme 3

REMOVAL AND INSTALLATION

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/lincoln/town-car/iii-2003-2011/remont/hoistjack/#jacking-and-lifting) article.
2. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/lincoln/town-car/iii-2003-2011/remont/body-electrical/#battery-mounting-and-cables) article.
3. Disconnect the evaporative emission (EVAP) breather tube.
4. Disconnect the EVAP vapor tube quick connect coupling. For additional information, refer to «FUEL SYSTEM - GENERAL INFORMATION»(/lincoln/town-car/iii-2003-2011/remont/fuel-system/#fuel-system-general-information) article.
5. Remove the 2 EVAP canister retaining nuts. To install, tighten to 6 Nm (53 lb-in).
6. Disconnect the canister vent solenoid electrical connector.
7. Remove the 3 EVAP canister retaining rivets. Drill out the center of the original rivets to remove and replace with new rivets upon installation.
8. Remove the EVAP canister.
9. To install, reverse the removal procedure. Leak test the system. For additional information, refer to «EVAPORATIVE EMISSION SYSTEM LEAK TEST»(/lincoln/town-car/iii-2003-2011/remont/auxiliary-emission-control-systems/#evaporative-emissions__evaporative-emission-system-leak-test) . Carry out the evaporative emission repair verification drive cycle. For additional information, refer to «INTRODUCTION - GASOLINE ENGINES»(/lincoln/town-car/iii-2003-2011/remont/testing-diagnostics/#engine-controls-introduction-except-diesel-hybrid) article.

Scheme 4

1. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/lincoln/town-car/iii-2003-2011/remont/body-electrical/#battery-mounting-and-cables) article.
2. Disconnect the evaporative emission (EVAP) purge valve electrical connector.
3. Disconnect the 2 EVAP tube quick connect couplings. For additional information, refer to «FUEL SYSTEM - GENERAL INFORMATION»(/lincoln/town-car/iii-2003-2011/remont/fuel-system/#fuel-system-general-information) article.
4. Remove the EVAP canister purge valve. Depress the lock tab on the EVAP canister purge valve and release it from the bracket.
5. To install, reverse the removal procedure. Leak test the system. For additional information, refer to «EVAPORATIVE EMISSION SYSTEM LEAK TEST»(/lincoln/town-car/iii-2003-2011/remont/auxiliary-emission-control-systems/#evaporative-emissions__evaporative-emission-system-leak-test) . Carry out the evaporative emission repair verification drive cycle. For additional information, refer to the «INTRODUCTION - GASOLINE ENGINES»(/lincoln/town-car/iii-2003-2011/remont/testing-diagnostics/#engine-controls-introduction-except-diesel-hybrid) article.

Fuel Vapor Tube Assembly

Material

Scheme 5

1. Remove the fuel tank. For additional information, refer to «FUEL TANK AND LINES»(/lincoln/town-car/iii-2003-2011/remont/fuel-system/#fuel-tank-and-fuel-lines) article.
2. Disconnect the fuel tank pressure sensor electrical connector.
3. Remove the grade vent valve from the fuel tank.
4. Remove the 4 fuel vapor control tube assembly valve retainer clips from the fuel tank.
5. Release the clamp and remove the vapor control tube assembly valve from the fuel tank.
6. To install, reverse the removal procedure. Leak test the system. For additional information, refer to «EVAPORATIVE EMISSION SYSTEM LEAK TEST»(/lincoln/town-car/iii-2003-2011/remont/auxiliary-emission-control-systems/#evaporative-emissions__evaporative-emission-system-leak-test) . Carry out the evaporative emission repair verification drive cycle. For additional information, refer to «INTRODUCTION - GASOLINE ENGINES»(/lincoln/town-car/iii-2003-2011/remont/testing-diagnostics/#engine-controls-introduction-except-diesel-hybrid) article.

Scheme 6

1. Remove the fuel tank. For additional information, refer to «FUEL TANK AND LINES»(/lincoln/town-car/iii-2003-2011/remont/fuel-system/#fuel-tank-and-fuel-lines) article.
2. Release the clamp and disconnect the fuel vapor tube assembly-to-fill limiting vent valve hose.
3. Insert a suitable tool between the fill limiting vent valve flange and the fuel tank grommet, apply upward pressure and remove the fill limiting vent valve from the tank.
4. To install, reverse the removal procedure. Carry out an evaporative emission system leak test. For additional information, refer to «EVAPORATIVE EMISSION SYSTEM LEAK TEST»(/lincoln/town-car/iii-2003-2011/remont/auxiliary-emission-control-systems/#evaporative-emissions__evaporative-emission-system-leak-test) . Carry out the evaporative emission repair verification drive cycle. For additional information, refer to «INTRODUCTION - GASOLINE ENGINES»(/lincoln/town-car/iii-2003-2011/remont/testing-diagnostics/#engine-controls-introduction-except-diesel-hybrid) article.

Scheme 7

1. Remove the evaporative emission (EVAP) canister assembly. For additional information, refer to «EVAPORATIVE EMISSION CANISTER»(/lincoln/town-car/iii-2003-2011/remont/auxiliary-emission-control-systems/#evaporative-emissions) .
2. Disconnect the EVAP canister vent solenoid inlet and outlet vent hoses.
3. Remove the EVAP canister vent solenoid.
4. To install, reverse the removal procedure. Carry out the Leak Test. For additional information, refer to «EVAPORATIVE EMISSION SYSTEM LEAK TEST»(/lincoln/town-car/iii-2003-2011/remont/auxiliary-emission-control-systems/#evaporative-emissions__evaporative-emission-system-leak-test) . Carry out the Evaporative Emission Repair Verification Drive Cycle. For additional information, refer to «INTRODUCTION - GASOLINE ENGINES»(/lincoln/town-car/iii-2003-2011/remont/testing-diagnostics/#engine-controls-introduction-except-diesel-hybrid) article.

Scheme 8

1. Remove the evaporative emission (EVAP) canister. For additional information, refer to «EVAPORATIVE EMISSION CANISTER»(/lincoln/town-car/iii-2003-2011/remont/auxiliary-emission-control-systems/#evaporative-emissions) .
2. Disconnect the EVAP canister outlet vapor tube from the dust separator.
3. Depress the lock tab on the inside of the EVAP canister to release the dust separator.
4. Disconnect the EVAP canister vapor outlet tube and remove the dust separator from the EVAP canister bracket.
5. To install, reverse the removal procedure.

See also:
• INTRODUCTION - GASOLINE ENGINES
• FUEL SYSTEM - GENERAL INFORMATION
• JACKING AND LIFTING
• BATTERY, MOUNTING AND CABLES
• FUEL TANK AND LINES
• PHASE 2 - SYSTEM LEAK CHECK
• EVAPORATIVE EMISSION SYSTEM LEAK TEST
• EVAPORATIVE EMISSION CANISTER