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eric
eric, Automotive Repair Shop Manager
Category: Nissan
Satisfied Customers: 23967
Experience:  Automotive Repair Shop Manager, Technician/JA Mentor
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2000 nissan frontier 6 cylinder knock sensor replacement how to

Resolved Question:

2000 nissan frontier 6 cylinder knock sensor replacement how to
Submitted: 3 years ago.
Category: Nissan
Expert:  eric replied 3 years ago.
Hi,

Ok, unfortunately the only way to access the knock sensor on this engine is to remove the intake manifold.

graphic

here are directions:

  1. Drain the cooling system.

  2. Relieve the fuel system pressure.

  3. Remove or disconnect the following:

    • Negative battery cable

    • Air intake duct

    • Accelerator cable

    • Cruise control cable

    • Idle Air Control (IAC) valve connector

    • Throttle Position (TP) sensor and switch connectors

    • Ignition coil and power transistor connectors

    • Exhaust Gas Recirculation (EGR) Solenoid valve connector

    • EGR temperature sensor connector

    • Radiator hoses

    • Heater hoses

    • Positive Crankcase Ventilation (PCV) valve and hose

    • Evaporative Emissions (EVAP) canister vacuum and purge hoses

    • Brake booster vacuum hose

    • Fuel pressure regulator vacuum hose

    • EGR tube

    • Spark plug wires

    • Distributor

    • Left bank injector connectors

    • Thermal transmitter

    • Upper intake manifold ground cable (VG33)

    • Supercharger (VG33ER)

    • Breather pipe

    • Upper intake manifold (VG33)

    • Intake manifold collector (VG33ER)

    • Fuel lines

    • Right bank injector connectors

    • Fuel supply manifold

    • Engine Coolant Temperature (ECT) sensor connector

    • Lower intake manifold. Loosen the fasteners in the sequence shown.

      Intake manifold bolt loosening sequence—3.3L engine

      Intake manifold bolt loosening sequence—3.3L engine

      Click to Enlarge

To install:

Intake manifold bolt torque sequence—3.3L engine

Intake manifold bolt torque sequence—3.3L engine

Click to Enlarge

  1. Install the lower intake manifold with a new gasket.

  2. Tighten the fasteners in sequence as follows:

    • Step 1: 35 inch lbs. (4 Nm)

    • Step 2: 78 inch lbs. (9 Nm)

    • Step 3: 70–84 inch lbs. (8–10 Nm)

  3. Install or connect the following:

    • ECT sensor connector

    • Fuel supply manifold

    • Right bank injector connectors

    • Fuel lines

    • Upper intake manifold

    • Breather pipe

    • Upper intake manifold ground cable

    • Thermal transmitter

    • Left bank injector connectors

    • Distributor

    • Spark plug wires

    • EGR tube

    • Fuel pressure regulator vacuum hose

    • Brake booster vacuum hose

    • EVAP canister vacuum and purge hoses

    • PCV valve and hose

    • Heater hoses

    • Radiator hoses

    • EGR temperature sensor connector

    • EGR Solenoid valve connector

    • Ignition coil and power transistor connectors

    • TP sensor and switch connectors

    • IAC valve connector

    • Cruise control cable

    • Accelerator cable

    • Air intake duct

    • Negative battery cable

  4. Fill the cooling system.

  5. Start the engine and check for leaks.

eric, Automotive Repair Shop Manager
Category: Nissan
Satisfied Customers: 23967
Experience: Automotive Repair Shop Manager, Technician/JA Mentor
eric and 6 other Nissan Specialists are ready to help you

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