Emissions Control System: Removal & Installation Jeep Liberty I

REMOVAL

The duty cycle EVAP canister purge solenoid (DCP) is located in the engine compartment. It is attached to a bracket located between the battery and the Power Distribution Center (PDC). The EVAP system test port is located near the solenoid.

Scheme 9

1. Disconnect electrical wiring connector at solenoid.
2. Disconnect vacuum harness at solenoid.
3. Remove solenoid and its support bracket (pull straight up).

INSTALLATION

1. Slip EVAP canister purge solenoid onto its mounting bracket.
2. Connect vacuum harness to solenoid.
3. Connect electrical connector to solenoid.

The Leak Detection Pump (LDP) is attached (bolted) to the front of the fuel tank. The LDP fresh air filter is located on the end of a hose. This hose is attached to the fuel fill tube assembly below and near the fuel fill opening. The LDP and LDP filter are typically replaced (serviced) as one unit.

Scheme 10

Scheme 11

1. Raise vehicle.
2. Carefully remove two 3/4" vent hoses at sides of LDP.
3. Carefully remove other vapor/vacuum hoses from LDP.
4. Place a hydraulic jack under fuel tank.
5. Loosen 2 fuel tank strap mounting bolts at front of tank about 10 turns.
6. Lower front of fuel tank about 1/2".
7. Remove 2 LDP mounting nuts and lower LDP slightly to gain access to electrical connector.
8. Disconnect electrical connector at LDP. To disconnect: Slide red colored tab upward. Push on black colored tab while removing connector.
9. Remove LDP from vehicle.

The Leak Detection Pump (LDP) is attached (bolted) to the front of the fuel tank. The LDP filter is located on the end of a hose. This hose is attached to the fuel fill tube assembly below and near the fuel fill opening. The LDP and LDP filter are replaced (serviced) as one unit.

1. Install electrical connector to LDP. Push red colored tab downward to lock connector to LDP.
2. Position LDP and LDP bracket to fuel tank mounting studs and install 2 nuts. Tighten nuts to 1 N.m (11 in. lbs.) torque.
3. Raise fuel tank to body and tighten 2 strap bolts to 61 N.m (45 ft. lbs.) torque.
4. Carefully install vapor/vacuum lines to LDP, and install hose to LDP filter. The vapor/vacuum lines and hoses must be firmly connected. Check the vapor/vacuum lines at the LDP, LDP filter and EVAP canister duty cycle purge solenoid for damage or leaks. If a leak is present, a Diagnostic Trouble Code (DTC) may be set.

The EVAP canister is located near front of fuel tank and next to left/rear spring.

Scheme 12

Scheme 13

1. Raise vehicle.
2. Disconnect vacuum hoses/lines at EVAP canister. Note location of lines before removal.
3. Remove EVAP canister and mounting bracket assembly from body (2 bolts).
4. Remove canister-to-mounting bracket bolt.
5. Slide 2 canister mounting pins from mounting bracket.

1. Slide 2 canister mounting pins into mounting bracket.
2. Install canister-to-mounting bracket bolt.
3. Position canister and bracket assembly to body.
4. Install 2 mounting bracket bolts. Tighten to 47 N.m (35 ft. lbs.) torque.
5. Connect vacuum hoses/lines at EVAP canister.
6. Lower vehicle.