Infiniti Car 1998-05

Removal & Installation

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  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Release the fuel system pressure.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Rear seat back and bottom
     
    Inspection hole cover located beneath the rear seat
     
    Connectors and fuel tubes
     
    Six screws
     
    Fuel pump/gauge assembly and disconnect the tubes and connector
     
    Fuel pump by sliding it out on an angle
     

  6.  

To install:

  1. Install or connect the following:

    Fuel pump/gauge assembly
     
    All fuel lines and connectors
     
    Six screws
     
    Negative battery cable
     

  2.  
  3. Start the vehicle, check for leaks and repair if necessary.
  4.  
  5. Install the inspection cover.
  6.  
  7. Rear seat back and bottom.
  8.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Release the fuel system pressure.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Rear seat back and bottom
     
    Inspection hole cover located beneath the rear seat
     
    Connectors and fuel tubes
     
    Six screws
     
    Fuel pump/gauge assembly and disconnect the tubes and connector
     
    Fuel pump by sliding it out on an angle
     

  6.  

To install:

  1. Install or connect the following:

    Fuel pump/gauge assembly
     
    All fuel lines and connectors
     
    Six screws
     
    Negative battery cable
     

  2.  
  3. Start the vehicle, check for leaks and repair if necessary.
  4.  
  5. Install the inspection cover.
  6.  
  7. Rear seat back and bottom.
  8.  



Click image to see an enlarged view

Fig. Fuel level sending unit location



Click image to see an enlarged view

Fig. Fuel level sending unit location-G35 coupe



Click image to see an enlarged view

Fig. Fuel level sending unit location-G35 sedan

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Relieve the fuel system pressure
  4.  
  5. Remove or disconnect the following:
    NOTE
    If replacement of the fuel filter is required, proceed with the following steps.



    Negative battery cable
     
    Rear seat bottom
     
    Inspection hole cover from under the rear seat
     
    Electrical and quick connectors
     
    Six screws
     
    Fuel level sensor/fuel pump assembly
     



    Fuel level sensor/fuel pump assembly flange
     
    Fuel tank temperature sensor harness
     
    Fuel level sensor flange and raise the fuel level sensor
     
    Fuel pump electrical connector
     
    Quick connectors from the fuel level sensor
     
    Fuel level sensor from the assembly
     
    Snap fit connectors and remove the fuel filter from the fuel pump assembly
     

  6.  

To install:

  1. Install or connect the following:

    Fuel filter to the fuel pump assembly
     
    Fuel level sensor to the fuel pump assembly
     
    Fuel level sensor quick connectors
     
    Electrical connectors
     
    Fuel tank temperature sensor harness
     
    Fuel level sensor unit and fuel pump flanges. Make certain that they snap together.
     
    Fuel pump assembly to the fuel tank
     
    Six screws
     
    Quick and electrical connectors
     
    Negative battery cable
     

  2.  
  3. Start the vehicle, check for leaks and repair if necessary.
  4.  
  5. Install the inspection hole cover plate.
  6.  
  7. Install the rear seat bottom.
  8.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Relieve the fuel system pressure
  4.  
  5. Remove or disconnect the following:
    NOTE
    If the vehicle has no fuel pump access cover, the fuel tank must be lowered or removed to gain access to the in-tank fuel pump.


    NOTE
    When removing or installing the fuel pump assembly, be careful not to damage or deform it and always install a new O-ring.



    Negative battery cable
     
    Access panel under the rear seat
     



    Fuel gauge electrical connector and pump electrical connector
     
    Fuel outlet and the return hoses
     
    Fuel pump assembly-to-fuel tank bolts and lift the fuel pump assembly from the fuel tank. Discard the O-ring. Plug the fuel tank opening with a clean rag to prevent dirt from entering the system
     

  6.  

To install:

  1. Remove the rag from the fuel tank opening.
  2.  
  3. Install or connect the following:

    Fuel pump assembly into the fuel tank with a new O-ring. Tighten the bolts to 17-23 inch lbs. (2.0-2.5 Nm)
     
    Fuel lines and the electrical connectors. Always use new clamps when reconnecting fuel line hoses.
     
    Fuel pump access cover
     
    Negative battery cable
     

  4.  
  5. Start the engine, check for fuel leaks and repair if necessary.
    NOTE
    On some models, the Check Engine Light will stay ON after installation is completed. The memory code in the control unit must be erased. This code is stored for an open fuel pump circuit, this is caused when the fuel pressure is released. To erase the code, disconnect the battery cable for 10 seconds, then reconnect after installation of fuel pump.

  6.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Relieve the fuel system pressure
  4.  
  5. Remove or disconnect the following:
    NOTE
    If replacement of the fuel filter is required, proceed with the following steps.



    Negative battery cable
     
    Rear seat bottom
     
    Inspection hole cover from under the rear seat
     
    Electrical and quick connectors
     
    Six screws
     
    Fuel level sensor/fuel pump assembly
     



    Fuel level sensor/fuel pump assembly flange
     
    Fuel tank temperature sensor harness
     
    Fuel level sensor flange and raise the fuel level sensor
     
    Fuel pump electrical connector
     
    Quick connectors from the fuel level sensor
     
    Fuel level sensor from the assembly
     
    Snap fit connectors and remove the fuel filter from the fuel pump assembly
     

  6.  

To install:

  1. Install or connect the following:

    Fuel filter to the fuel pump assembly
     
    Fuel level sensor to the fuel pump assembly
     
    Fuel level sensor quick connectors
     
    Electrical connectors
     
    Fuel tank temperature sensor harness
     
    Fuel level sensor unit and fuel pump flanges. Make certain that they snap together
     
    Fuel pump assembly to the fuel tank
     
    Six screws
     
    Quick and electrical connectors
     
    Negative battery cable
     

  2.  
  3. Start the vehicle, check for leaks and repair if necessary.
  4.  
  5. Install the inspection hole cover plate.
  6.  
  7. Install the rear seat bottom.
  8.  



Click image to see an enlarged view

Fig. Fuel level sending unit location-I35

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Relieve the fuel system pressure
  4.  
  5. Remove or disconnect the following:
    NOTE
    If replacement of the fuel filter is required, proceed with the following steps.



    Negative battery cable
     
    Rear seat bottom
     
    Inspection hole cover from under the rear seat
     
    Electrical and quick connectors
     
    Six screws
     
    Fuel level sensor/fuel pump assembly
     



    Fuel level sensor/fuel pump assembly flange
     
    Fuel tank temperature sensor harness
     
    Fuel level sensor flange and raise the fuel level sensor
     
    Fuel pump electrical connector
     
    Quick connectors from the fuel level sensor
     
    Fuel level sensor from the assembly
     
    Snap fit connectors and remove the fuel filter from the fuel pump assembly
     

  6.  

To install:

  1. Install or connect the following:

    Fuel filter to the fuel pump assembly
     
    Fuel level sensor to the fuel pump assembly
     
    Fuel level sensor quick connectors
     
    Electrical connectors
     
    Fuel tank temperature sensor harness
     
    Fuel level sensor unit and fuel pump flanges. Make certain that they snap together.
     
    Fuel pump assembly to the fuel tank
     
    Six screws
     
    Quick and electrical connectors
     
    Negative battery cable
     

  2.  
  3. Start the vehicle, check for leaks and repair if necessary.
  4.  
  5. Install the inspection hole cover plate.
  6.  
  7. Install the rear seat bottom.
  8.  



Click image to see an enlarged view

Fig. Fuel level sending unit location-M45

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Properly relieve fuel system pressure.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Fuel filler cap
     
    Front finish panel
     
    Fuel pump connector
     
    Fuel feed line
     
    Fuel pump assembly
     
    Fuel pump
     

  6.  

To install:

  1. Installation is the reverse of the removal procedure.
  2.  
  3. Start the vehicle, check for leaks and repair if necessary.
  4.  



Click image to see an enlarged view

Fig. Fuel level sending unit location-Q45

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Properly relieve fuel system pressure.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Fuel filler cap
     
    Front finish panel
     
    Fuel pump connector
     
    Fuel feed line
     
    Fuel pump assembly
     
    Fuel pump
     

  6.  

To install:

  1. Installation is the reverse of the removal procedure.
  2.  
  3. Start the vehicle, check for leaks and repair if necessary.
  4.  

  1. Check fuel level on fuel gauge. If fuel gauge indicates full or almost full, drain fuel from fuel tank until fuel gauge indicates nearly three-quarters full.
  2.  
  3. Release the fuel pressure from the fuel lines.
  4.  
  5. Open fuel filler lid.
  6.  
  7. Open fuel filler cap and release the pressure inside fuel tank.
  8.  
  9. Remove rear seat cushion.
  10.  
  11. Peel away floor carpet, then remove the inspection hole cover for the main and sub fuel level sensor units by turning clips clockwise by 90°.
  12.  
  13. Disconnect the harness connector and the fuel feed tube.
  14.  
  15. Disconnect quick connector as follows:

    Hold the sides of connector, push in tabs and pull out fuel feed tube.
     
    If quick connector sticks to tube of main fuel level sensor unit, push and pull quick connector several times until they start to move. Then disconnect them by pulling.
     

  16.  
  17. Remove the main fuel level sensor unit, the fuel filter and the fuel pump assembly, and the sub fuel level sensor unit as follows:

    Removal of main fuel level sensor unit, fuel filter and fuel pump assembly:
     
    Remove retainer.
     
    Raise main fuel level sensor unit, fuel filter and fuel pump assembly, and then remove jet pump.
     
    Leave the jet pump on the fuel tank with the fuel hose.
     
    Removal of sub fuel level sensor unit:
     
    Remove retainer.
     
    Raise and release sub fuel level sensor unit to remove.
     

  18.  

To install:

  1. Install the sensor in reverse order of removal with the following notes:

    When installing the jet pump, insert them fully until a clicking sound of the full stopper engagement is heard.
     
    Face the main and the sub fuel level sensor units and install it with the dowel pin on back aligned with the pin hole on the fuel tank.
     
    Install the retainer so that its notch becomes parallel with the notch on the fuel tank.
     
    Tighten the retainer mounting bolts evenly.
     

  2.  

 
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