Bonneville, LeSabre, Park Avenue 2000-2005

Supercharger

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Removal & Installation




NOTE
A small amount of oil seepage through the front seal is normal. This seepage is caused by minute traces of oil escaping around the seal due to normal pressure build up in the oil cavity within the supercharger. A build up of dust can stick to the thin oil film, which causes the oil seepage to appear worse than it really is. The supercharger should not be replaced for this seepage. However, if supercharger oil is visually dripping from the supercharger front seal, the supercharger will need to be replaced. The supercharger oil level should be checked every 30,000 miles or every 36 months.



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Fig. Exploded view of the supercharger and related components-3.8L (VIN 1) engine

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Relieve the fuel system pressure.
  6.  
  7. Drain the cooling system.
  8.  
  9. Remove or disconnect the following:

    Supercharger belt
     
    Engine cover
     
    Air duct from the throttle body
     
    Right side spark plug wires from the ignition module
     
    Alternator brace with purge solenoid
     
    Exhaust Gas Recirculation (EGR) wiring harness and shield, if necessary
     
    Manifold Absolute Pressure (MAP) sensor bracket
     
    Fuel lines
     
    Fuel injector connectors
     
    Fuel rail with injectors
     
    Booster bypass solenoid
     
    Regulator valve and harness bolt
     
    Boost control solenoid
     
    Throttle body bolts and the assembly
     
    Supercharger bolts and the assembly
     

  10.  

To install:

  1. Install or connect the following:

    Supercharger with new gasket and torque the bolts, gradually and evenly, to 17 ft. lbs. (23 Nm).
     
    MAP sensor bracket
     
    Throttle body and torque the nuts to 89 inch lbs. (10 Nm)
     
    Boost control solenoid and torque the nut to 72 inch lbs. (8 Nm)
     
    Regulator valve and harness bolt
     
    Booster bypass solenoid
     
    Fuel rail with injectors
     
    Fuel lines
     
    Electrical connectors to the fuel injectors
     
    Alternator brace with purge solenoid
     
    EGR wiring harness and shield
     
    Right side spark plug wires
     
    Supercharger drive belt
     
    Air duct
     
    Engine cover
     
    Negative battery cable
     

  2.  
  3. Refill and bleed the cooling system.
  4.  
  5. Run the engine and check for leaks and proper engine operation.
  6.  

 
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