Lexus GS, SC 1998-06

Fuel Pump

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable. Wait at least 90 seconds before performing any other work.
     
    Trunk floor mat
     
    Trunk trim cover
     
    Fuel pump electrical connector
     
    Rear seat bottom and seat back
     
    Partition cover
     
    Mounting bolts and remove the fuel pump set plate
     
    3 nuts and disconnect the fuel pump bracket from the tank
     
    Fuel hose from the bracket
     
    Pump, bracket and set plate as an assembly
     

  4.  

To install:

  1. Install or connect the following:

    A new gasket on the set plate
     
    Fuel hose to the pump and bracket
     
    Pump and bracket assembly with the 3 nuts; tighten the nuts to 48 inch lbs. (5 Nm). Install the set plate and tighten the bolts to 26 inch lbs. (3 Nm).
     
    Panel partition
     
    Rear seat cushion and back
     
    Fuel pump electrical connector
     
    Trim panel
     
    Spare tire and the trunk floor mat
     
    Negative battery cable
     

  2.  
  3. Start the engine; check the fuel system for leaks
  4.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable. Wait at least 90 seconds before performing any other work.
     
    Rear seat bottom and seat back
     
    Fuel pump tube
     
    8 bolts and fuel tank vent tube set plate
     
    Fuel pump and sensor gauge assembly
     
    Fuel suction hose and support
     
    Fuel pump cushion rubber
     
    Fuel pressure w/jet pump regulator assembly
     
    Fuel suction plate w/sender gauge
     
    Fuel pump and filter
     

  4.  

To install:

  1. To install, reverse the removal procedure. Install a new O-ring on the fuel jet pump regulator assembly and a new gasket on the fuel pump/sender gauge assembly. Torque the 8 bolts securing the fuel tank set plate to 52 in. lbs (6.0 Nm).
  2.  
  3. Inspect fuel pump operation and check for fuel leaks.
  4.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable. Wait at least 90 seconds before performing any other work.
     
    Trunk floor mat
     
    Trunk trim cover
     
    Fuel pump electrical connector
     
    Rear seat bottom and seat back
     
    Partition cover
     
    Mounting bolts and remove the fuel pump set plate.
     
    3 nuts and disconnect the fuel pump bracket from the tank.
     
    Fuel hose from the bracket
     
    Pump, bracket and set plate as an assembly
     

  4.  

To install:

  1. Install or connect the following:

    A new gasket on the set plate
     
    Fuel hose to the pump and bracket
     
    Pump and bracket assembly with the 3 nuts; tighten the nuts to 48 inch lbs. (5 Nm). Install the set plate and tighten the bolts to 26 inch lbs. (3 Nm).
     
    Panel partition
     
    Rear seat cushion and back
     
    Fuel pump electrical connector
     
    Trim panel
     
    Spare tire and the trunk floor mat
     
    Negative battery cable
     

  2.  
  3. Start the engine; check the fuel system for leaks
  4.  

 
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