Removal and Installation: Removal

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: To avoid the danger of being scalded, never drain the coolant when the engine is hot.

Disconnect the negative battery terminal.
Release the fuel pressure.
Refer to FUEL PRESSURE RELEASE .
Drain coolant when engine is cooled. Refer to Changing Engine Coolant .
Disconnect the MAF sensor electrical connector.
Remove air cleaner case and air duct assembly.
Refer to REMOVAL AND INSTALLATION .
Disconnect the following components at the intake side:
1. PCV hose
2. EVAP canister purge volume control solenoid
3. Electric throttle control actuator
4. Brake booster vacuum hose
Disconnect fuel hose quick connector on the vehicle engine side.
- Using the quick connector release tool (here after called "release tool"), and perform the following steps to disconnect the fuel tube quick connector.
Fig 1: View Of Fuel Line
Courtesy of NISSAN MOTOR CO., U.S.A.
1. Remove quick connector cap.
  
  Fig 2: Remove Quick Connector Cap
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. With the sleeve side of release facing quick connector, install release tool onto the fuel tube as shown.
3. Insert release tool into quick connector until sleeve contacts and goes no further. Hold the release tool on that position.
  
  Fig 3: Inserting Release Tool
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  CAUTION: Inserting the release tool hard will not disconnect quick connector. Hold release tool where it contacts and goes no further.
4. Pull the quick connector straight out from the fuel tube.
  CAUTION:
  - Pull quick connector holding it at the "A" position, as shown.
  - Do not pull with lateral force applied. O-ring inside quick connector may be damaged.
  - Prepare container and cloth beforehand as fuel will leak out.
  - Avoid fire and sparks.
  - Be sure to cover openings of disconnected pipes with plug or plastic bag to avoid fuel leakage and entry of foreign materials.
If necessary, disconnect the fuel tube, on the vehicle piping side, using the quick connector release tool (here after called "release tool"). Perform the following steps to disconnect the fuel tube quick connector.
1. With the sleeve side of the release facing quick connector, install release tool onto the fuel tube as shown.
2. Insert release tool into quick connector until sleeve contacts and goes no further. Hold the release tool on that position.
  CAUTION: Inserting the release tool hard will not disconnect quick connector. Hold release tool where it contacts and goes no further.
3. Pull the quick connector straight out off of the fuel tube.
  CAUTION:
  - Pull quick connector holding it at the "A" position, as shown.
    
    Fig 4: Pulling Quick Connector
    Courtesy of NISSAN MOTOR CO., U.S.A.
  - Do not pull with lateral force applied as the O-ring inside the quick connector may be damaged.
  - Prepare a container and cloth beforehand as fuel will leak out.
  - Avoid fire and sparks.
  - Be sure to cover openings of disconnected pipes with plug or plastic bag to avoid fuel leakage and entry of foreign materials.
Loosen mounting bolts diagonally, and remove the electric throttle control actuator.
CAUTION: Handle carefully to avoid any damage.
Disconnect intake manifold collector harness, and vacuum hose.
CAUTION: Cover engine openings to avoid entry of foreign materials.
Remove intake manifold collector mounting bolts on the support, using power tools.
Loosen the mounting bolts and nuts in the order shown to remove the intake manifold collector, using power tools.

Fig 5: Intake Manifold Collector Loosening Sequence
Courtesy of NISSAN MOTOR CO., U.S.A.
Loosen the bolts in the order shown to remove the intake manifold assembly, using power tools.

Fig 6: Intake Manifold Assembly Loosening Sequence
Courtesy of NISSAN MOTOR CO., U.S.A.