Evaporative Emissions Lincoln Zephyr US

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

The evaporative emission (EVAP) system

1. Prevents hydrocarbon emissions from reaching the atmosphere.
2. Stores fuel vapors in the EVAP canisters, that are generated during vehicle operation or hot soak, 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, using various sensor inputs, calculates the desired amount of purge flow. The PCM regulates the purge flow, induced by the application of intake manifold vacuum, by varying the duty cycle applied to the vapor tube.

The fuel vapors are routed

1. From the fuel tank through the fuel vapor vent valve.
2. To the EVAP canisters through a vapor tube.
3. To the engine when the vapor tube is opened by the PCM.

The fuel tank pressure (FTP) sensor (part of fuel vapor tube assembly)

1. Monitors the pressure levels in the fuel tank.
2. Communicates the pressure reading to the PCM during the OBD II leak test.

The fuel vapor tube assembly

1. Is located under the rear of the vehicle.
2. Is used to monitor fuel pressure and relay information to the PCM.

The EVAP canister

1. Is located under the rear of the vehicle.
2. Contains activated carbon.
3. Stores fuel vapors.

The fuel tank filler cap

1. Relieves system vacuum below -3.5 kPa (-16.00 H 2 O).

The EVAP canister vent solenoid

1. Is normally open.
2. Seals the EVAP system for the inspection and maintenance (I/M 240) test and OBD II leak and pressure tests.
3. Is mounted to the EVAP canister.

The EVAP canister purge valve

1. Is normally closed.
2. Regulates the purging of the EVAP canisters.
3. Is controlled by the PCM.
4. Is repaired as a separate item.
5. Is mounted on the cowl.

The EVAP dust separator

1. Is attached to the EVAP canister vent solenoid.
2. Prevents suspended dust and dirt particles from entering the evaporative emission system.
3. Is repaired as an assembly with the EVAP canister vent solenoid.

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 irrationally 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 article.

Evaporative Emission System Leak Test

SPECIAL TOOL(S) DESCRIPTION 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

Phase 1 - Leak Verification

1. Connect the smoke machine to the evaporative emission (EVAP) test port. For additional information, refer to the manufacturer's instructions.
2. Using the scan tool, close the EVAP canister vent solenoid. For additional information, refer to the manufacturer's instructions.
3. Using the smoke machine, pressurize the EVAP system.
4. 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»(/lincoln/zephyr/us-2006-2006/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.

Evaporative Emission Repair Verification Drive Cycle

SPECIAL TOOL(S) DESCRIPTION Worldwide Diagnostic System (WDS) Vehicle Communication Module (VCM) with appropriate adapters, or equivalent diagnostic tool

Drive Cycle Recommendations

Note. The following procedure is designed to execute and complete the evaporative emission (EVAP) repair verification drive cycle and to clear the Ford P1000, inspection and maintenance (I/M) readiness code. When the ambient air temperature is below 4.4°C (40°F) or above 37.8°C (100°F), or the altitude is above 2,438 meters (8,000 feet), the EVAP monitor will not run. If the P1000 must be cleared in these conditions, the powertrain control module (PCM) must detect them once (twice on some applications) before the EVAP monitor can be bypassed and the P1000 cleared. The EVAP bypassing procedure is described in the following drive cycle.

1. Most OBD II monitors will complete more readily using a steady foot driving style during cruise or acceleration modes. Operating the throttle in a smooth fashion will minimize the time necessary for monitor completion.
2. Fuel tank level should be between 1/2 and 3/4 full with 3/4 full being the most desirable.
3. The evaporative monitor can only operate during the first 30 minutes of engine operation. When executing the procedure for this monitor, stay in part throttle mode and drive in a smooth fashion to minimize fuel slosh. Drive Cycle Preparation NOTE: For best results, follow each of the following steps as accurately as possible.
4. Install the diagnostic tool. Turn the key ON with the engine OFF. Cycle the key off, then on. Select the appropriate vehicle and engine qualifier. Clear all diagnostic trouble codes (DTCs) and carry out a PCM reset.
5. Begin to monitor the following PIDs: ECT, EVAPDC, FLI (if available) and TP MODE. Press Diagnostic Data Link, PCM, PID/Data monitor and record, press trigger to select each PID, then start.
6. Start the engine without returning the key to the OFF position. Preparation for Monitor Entry WARNING: Strict observance of posted speed limits and attention to driving conditions are mandatory when proceeding through the following drive cycle.
7. Idle the vehicle for 15 seconds. Drive at 64 km/h (40 mph) until the ECT is at least 76.7°C (170°F).
8. Is IAT above 4.4°C (40°F) and below 37.8°C (100°F)? If not, continue with the following steps but note that the EVAP Monitor Bypass portion of the drive cycle (Step 13 ) will be required to bypass the EVAP monitor and clear the P1000.
9. Cruise at 64 km/h (40 mph) for 60 seconds.
10. Cruise at 72 to 104 km/h (45 to 65 mph) for 10 minutes.
11. Bring the vehicle to a stop. Idle with the transmission in DRIVE (for automatic transmission) or NEUTRAL (for manual transmission) for 2 minutes.
12. Using the diagnostic tool, check for pending codes. Conduct normal repair procedures for any pending code concerns. Rerun any incomplete monitor.
13. Park the vehicle for a minimum of 8 hours. Repeat Steps 5 through 12 .

Canister Vent Solenoid Closing Procedure

SPECIAL TOOL(S) DESCRIPTION Worldwide Diagnostic System (WDS) Vehicle Communication Module (VCM) with appropriate adapters, or equivalent diagnostic tool

1. Connect the diagnostic tool and select the output test mode.
2. If parameter identification (PID) monitors are not active, select PIDs.
3. Select the fuel tank pressure (FTP) and the volts (V) PID for monitoring.
4. Select the ALL OFF mode.
5. Close the canister vent solenoid by pushing the START button on the diagnostic tool.

Removal and Installation

1. The dust separator is serviced as part of the evaporative emission (EVAP) canister vent solenoid. For additional information, refer to «EVAPORATIVE EMISSION CANISTER VENT SOLENOID»(/lincoln/zephyr/us-2006-2006/remont/auxiliary-emission-control-systems/#evaporative-emissions) .

Scheme 4

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING & LIFTING»(/lincoln/zephyr/us-2006-2006/remont/hoistjack/#jacking-lifting) .
2. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/lincoln/zephyr/us-2006-2006/remont/body-electrical/#battery-mounting-and-cables) .
3. Remove the 3 heat shield nuts and heat shield. To install, tighten to 10 Nm (89 lb-in).
4. Disconnect the fuel vapor control tube assembly valve electrical connector.
5. Disconnect the fuel vapor control tube assembly quick connect coupling from the fuel tank. For additional information, refer to «FUEL SYSTEM-GENERAL INFORMATION»(/lincoln/zephyr/us-2006-2006/remont/fuel-system/#fuel-system-general-information) .
6. Disconnect the fuel vapor control tube assembly quick connect coupling from the evaporative emission (EVAP) canister. For additional information, refer to «FUEL SYSTEM-GENERAL INFORMATION»(/lincoln/zephyr/us-2006-2006/remont/fuel-system/#fuel-system-general-information) .
7. Release the 2 swivel clips and remove the fuel vapor control tube assembly valve.
8. To install, reverse the removal procedure. Carry out a leak test. For additional information, refer to «EVAPORATIVE EMISSION SYSTEM LEAK TEST»(/lincoln/zephyr/us-2006-2006/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 «EVAPORATIVE EMISSION REPAIR VERIFICATION DRIVE CYCLE»(/lincoln/zephyr/us-2006-2006/remont/auxiliary-emission-control-systems/#evaporative-emissions__evaporative-emission-repair-verification-drive-cycle) .

Scheme 5

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING & LIFTING»(/lincoln/zephyr/us-2006-2006/remont/hoistjack/#jacking-lifting) .
2. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/lincoln/zephyr/us-2006-2006/remont/body-electrical/#battery-mounting-and-cables) .
3. Remove the evaporative emission (EVAP) canister. For additional information, refer to «EVAPORATIVE EMISSION CANISTER»(/lincoln/zephyr/us-2006-2006/remont/auxiliary-emission-control-systems/#evaporative-emissions) .
4. Remove the EVAP canister vent solenoid heat shield.
5. Disconnect the fuel vapor hose from the EVAP canister vent solenoid and dust separator assembly.
6. Release the EVAP canister vent solenoid and dust separator assembly from the EVAP canister.
7. To install, reverse the removal procedure. Carry out the evaporative emission system leak test. For additional information, refer to «EVAPORATIVE EMISSION SYSTEM LEAK TEST»(/lincoln/zephyr/us-2006-2006/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 «EVAPORATIVE EMISSION REPAIR VERIFICATION DRIVE CYCLE»(/lincoln/zephyr/us-2006-2006/remont/auxiliary-emission-control-systems/#evaporative-emissions__evaporative-emission-repair-verification-drive-cycle) .

Scheme 6

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING & LIFTING»(/lincoln/zephyr/us-2006-2006/remont/hoistjack/#jacking-lifting) .
2. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/lincoln/zephyr/us-2006-2006/remont/body-electrical/#battery-mounting-and-cables) .
3. Disconnect the evaporative emission (EVAP) canister vent solenoid electrical connector.
4. Disconnect the fuel vapor hose from the EVAP canister vent solenoid and dust separator assembly.
5. Disconnect the 2 quick connect couplings from the EVAP canister assembly. For additional information, refer to «FUEL SYSTEM-GENERAL INFORMATION»(/lincoln/zephyr/us-2006-2006/remont/fuel-system/#fuel-system-general-information) .
6. Remove the 2 nuts, 2 bolts and the EVAP canister assembly. To install, tighten to 6 Nm (53 lb-in).
7. To install, reverse the removal procedure. Carry out the evaporative emission system leak test. For additional information, refer to «EVAPORATIVE EMISSION SYSTEM LEAK TEST»(/lincoln/zephyr/us-2006-2006/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 «EVAPORATIVE EMISSION REPAIR VERIFICATION DRIVE CYCLE»(/lincoln/zephyr/us-2006-2006/remont/auxiliary-emission-control-systems/#evaporative-emissions__evaporative-emission-repair-verification-drive-cycle) .

Scheme 7

Scheme 8

1. Disconnect the battery ground cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/lincoln/zephyr/us-2006-2006/remont/body-electrical/#battery-mounting-and-cables) .
2. Remove the lower cowl panel. For additional information, refer to «COWL PANEL GRILLE»(/lincoln/zephyr/us-2006-2006/remont/exterior-body-panels/#front-end-body-panels) .
3. Disconnect the EVAP canister purge valve electrical connector.
4. Disconnect the 2 EVAP canister purge valve vapor tube quick connect couplings. For additional information, refer to «FUEL SYSTEM-GENERAL INFORMATION»(/lincoln/zephyr/us-2006-2006/remont/fuel-system/#fuel-system-general-information) .
5. Depress the tab and remove the EVAP canister purge valve from the bracket.
6. To install, reverse the removal procedure. Carry out the evaporative emission system leak test. For additional information, refer to «EVAPORATIVE EMISSION SYSTEM LEAK TEST»(/lincoln/zephyr/us-2006-2006/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 «EVAPORATIVE EMISSION REPAIR VERIFICATION DRIVE CYCLE»(/lincoln/zephyr/us-2006-2006/remont/auxiliary-emission-control-systems/#evaporative-emissions__evaporative-emission-repair-verification-drive-cycle) .

See also:
• JACKING & LIFTING
• BATTERY, MOUNTING AND CABLES
• FUEL SYSTEM-GENERAL INFORMATION
• COWL PANEL GRILLE
• PHASE 2
• EVAPORATIVE EMISSION CANISTER VENT SOLENOID
• EVAPORATIVE EMISSION SYSTEM LEAK TEST
• EVAPORATIVE EMISSION REPAIR VERIFICATION DRIVE CYCLE