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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 1495 (Engine Mechanical) >> Intake Manifold Collector >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different car, the 2005 Nissan Quest. 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.
  • The gasket for intake manifold collector (upper) is secured together with intake manifold collector (lower) bolt. Thus, when replacing only the upper gasket the lower gasket must also be replaced.
  1. Remove the cowl top and cowl top extension. Refer to REMOVAL AND INSTALLATION - COWL TOP .
  2. Remove the engine cover using power tool.
  3. Remove upper air cleaner case, mass air flow sensor, and air cleaner to electric throttle control actuator tube as an assembly. Refer to REMOVAL AND INSTALLATION .
  4. Partially drain the coolant when the engine is cool. Refer to DRAINING ENGINE COOLANT .
  5. Disconnect the following:
    • Power brake booster vacuum hose
    • Coolant hoses from the intake manifold collector
    • Vacuum lines from the intake manifold collector (upper) and power valve
    • Fuel injector electrical connectors
    • PCV hose
    • Electric throttle control actuator electrical connectors
    • EVAP canister purge hose
    • EGR temperature sensor electrical connector
      Fig 1: Removing Engine Cover - With Torque Specifications
      G02474756Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION:
    • Cover any engine openings to avoid the entry of any foreign material.
  6. Remove the EGR tube (to lower intake manifold collector) nuts.
  7. Disconnect the power steering hose bracket from the back of the intake manifold collector (upper).
  8. Remove the EVAP canister purge volume solenoid valve bracket bolt. Position the valve aside.
  9. Remove the VIAS control solenoid valve bracket bolt. Position the valve aside.
  10. Remove the vacuum tank.
  11. Remove the intake manifold collector (upper) support bracket from the back of the intake manifold collector (upper) using power tool.
  12. Loosen the intake manifold collector (lower) bolts in the order as shown using power tool, and remove the intake manifold collector (upper and lower) and gasket.
    Fig 2: Intake Manifold Collector (Lower) Bolts Loosening Sequence
    G02474757Courtesy of NISSAN MOTOR CO., U.S.A.
  13. If necessary, remove the electric throttle control actuator bolts in the order as shown and remove the electric throttle control actuator.
    CAUTION:
    • Handle carefully to avoid any shock to the electric throttle control actuator.
    • Do not disassemble.
      Fig 3: Removing Electric Throttle Control Actuator Bolts
      G02474758Courtesy of NISSAN MOTOR CO., U.S.A.
  14. If necessary, remove the intake manifold collector (upper) bolts in the order as shown, using power tool and remove the intake manifold collector (upper).
    CAUTION: Handle carefully to avoid any shock to the electric throttle control actuator, if installed.
    Fig 4: Intake Manifold Collector (Upper) Bolts Loosening Sequence
    G02474759Courtesy of NISSAN MOTOR CO., U.S.A.
  15. If necessary, remove power valve bolts in the order as shown and remove the power valve.
  16. If necessary remove the following components:
    • Vacuum tank
    • VIAS control solenoid valve
    • EVAP canister purge volume control solenoid valve
      Fig 5: Removing Power Valve Bolts
      G02474760Courtesy of NISSAN MOTOR CO., U.S.A.
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