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Altima
 
Engine & Transmission
 
Intake Manifold Collector Removal Procedure 2.5L Engine
Project: Intake Manifold Collector Removal Procedure 2.5L Engine
Models:
  • 2002 Nissan Altima
  • 2003 Nissan Altima
  • 2004 Nissan Altima
  • 2005 Nissan Altima
  • 2006 Nissan Altima
Tools:
  • 10 mm Socket  - Removing and installing Coil Bolts / Covers / Intake Collector
  • 12 mm Socket  - Removing and installing Intake Collector Bracket
  • 16 mm Socket  - Removing and installing Spark Plugs
  • Pliers
  • Ratchet
  • Ratchet Extension
  • 10 mm Wrench
  • 12 mm Wrench

1. Write down all radio station pre-sets.

2. Disconnect the negative battery cable.

3. Remove four Bolts and remove the Engine Cover.

Nissan Altima Spark Plugs Replacement Procedure 3.5L Engine
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4. Remove the Air Intake Duct and Air Filter Housing Top Cover.

Disconnect the Air Flow Sensor Harness Connector from the Air Filter Housing Top Cover

Nissan Altima Spark Plugs Replacement Procedure 3.5L Engine
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5. Disconnect the Purge Volume Control Valve and Electric Throttle Control Actuator Connectors. Then, re-position the Harness out of the way.

Nissan Altima Spark Plugs Replacement Procedure 3.5L Engine
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Nissan Altima Spark Plugs Replacement Procedure 3.5L Engine
Click image to see it larger

6. Disconnect the Cam Position Sensor and Coolant Temperature Sensor Connectors

Nissan Altima Spark Plugs Replacement Procedure 3.5L Engine
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7. Remove two Bolts from the Wire Harness Guide/Protector

Nissan Altima Spark Plugs Replacement Procedure 3.5L Engine
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8. Remove two Bolts that secure the vehicle Wire Harnesses to the Intake Collector

Nissan Altima Spark Plugs Replacement Procedure 3.5L Engine
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9. Disconnect the four Ignition Coil Harness Connectors

Nissan Altima Spark Plugs Replacement Procedure 3.5L Engine
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10. Re-position the vehicle Wire Harness and Guide/Protector away from the Intake Collector. This will make it easier to remove the Collector

11. Disconnect the PCV Hose from the Valve Cover, then disconnect the Brake Vacuum Booster Hose from the Intake Collector

Nissan Altima Spark Plugs Replacement Procedure 3.5L Engine
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12. Remove two Bolts and remove the Purge Volume Control Valve Bracket and Hose from the Intake Collector

Nissan Altima Spark Plugs Replacement Procedure 3.5L Engine
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13. Remove the two Bolts that secure the Intake Collector Support Bracket to the Cylinder Head, then loosen ONLY the two Bolts that secure the Bracket to the Intake Collector

Nissan Altima Spark Plugs Replacement Procedure 3.5L Engine
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14. Remove five Bolts and two Nuts that secure the Intake Collector to the Intake Manifold (see Figure A11). Then carefully re-position the Intake Collector out of the way.

Nissan Altima Spark Plugs Replacement Procedure 3.5L Engine
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NOTE:

• You do NOT have to disconnect the Coolant and Fuel Hoses from the Intake Collector to re-position it.

• It may be helpful to hang the Intake Collector from the under side of the front Hood using a metal coat hanger or other suitable device.

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