ParkAvenue 1997-1999

Electric Engine Fan

Imprimir

Electric Fan Switch



Operation

Specific to:

Buick LeSabre 1986-1999

Buick Park Avenue 1996-1999

Oldsmobile 88 1992-1999

Oldsmobile Delta 88 1986-1988

Oldsmobile LSS 1996-1999

Pontiac Bonneville 1987-1999

When the switch reaches a predetermined temperature, it closes the circuit to the relay. This energizes the relay, sending 12 volts to the fan. When the temperature decreases below the set point of the sender, the circuit opens and the voltage is no longer applied to the fan.

Removal & Installation

Specific to:

Buick LeSabre 1986-1999

Buick Park Avenue 1996-1999

Oldsmobile 88 1992-1999

Oldsmobile Delta 88 1986-1988

Oldsmobile LSS 1996-1999

Pontiac Bonneville 1987-1999

  1. Disconnect the negative battery cable.
  2.  
  3. Disconnect the switch electrical lead and remove the switch.
  4.  



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Fig. Typical electric fan motor and resistor locations

To install:

  1. Install the switch and connect the electrical lead.
  2.  
  3. Connect the battery cable.
  4.  

Testing

Specific to:

Buick LeSabre 1986-1999

Buick Park Avenue 1996-1999

Oldsmobile 88 1992-1999

Oldsmobile Delta 88 1986-1988

Oldsmobile LSS 1996-1999

Pontiac Bonneville 1987-1999

  1. Connect a jumper wire from the negative battery terminal to the black wire, or its terminal, on the electric fan motor.
  2.  
  3. Connect a jumper wire from the battery positive terminal to the remaining wire or terminal on the motor.
  4.  
  5. The fan should operate. If the fan does not operate, the motor may be defective and it should be replaced.
  6.  

Removal & Installation



Specific to:

Buick LeSabre 1986-1999

Buick Park Avenue 1996-1999

Oldsmobile 88 1992-1999

Oldsmobile Delta 88 1986-1988

Oldsmobile LSS 1996-1999

Pontiac Bonneville 1987-1999

  1. Disconnect the negative battery cable.
  2.  


CAUTION
Always keep yours hands, clothing and tools away from the fan assembly. The electric cooling fan can start even when the engine is not running, causing personal injury.



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Fig. Be very careful when working around the fans, as they can start running even if the engine is off!

  1. Raise and safely support the vehicle.
  2.  
  3. Remove the retainers, then remove the splash shield.
  4.  



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Fig. Remove the retaining bolts/screws, then remove the splash shield

  1. Detach the fan wiring harness from the motor and fan frame.
  2.  



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Fig. Remove the fan electrical connector retaining clip ...



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Fig. ... then unplug the fan electrical connector

  1. Remove lower fan mounting bolts.
  2.  



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Fig. Unfasten the lower fan mounting bolts. On this vehicle, there are three bolts (see arrows)

  1. Carefully lower the vehicle.
  2.  
  3. If necessary, remove the fan guard and the hose support.
  4.  
  5. Unfasten the retaining bolts, then remove the fan assembly from the radiator support.
  6.  



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Fig. Remove the 4 fan-to-radiator upper panel mounting bolts



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Fig. Remove the left and ...



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Fig. ... right side fan assemblies from the vehicle



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Fig. Detach the fan connector and unfasten the retaining bolts



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