GM Corvette 1984-1996 Repair Guide

Engine Fan

Print

REMOVAL & INSTALLATION




CAUTION
To avoid personal injury, always keep your hands, tools and clothing away from the engine fan. The fan is electric and may come on at anytime, even if the engine is not running. The fan can start automatically in response to a heat sensor with the ignition in the ON position.

5.7L (VIN 8 and J) Engine
1984-88 vehicles

See Figure 1

  1. Disconnect the negative battery cable.
  2.  
  3. Detach the fan electrical connector from the fan and shroud.
  4.  
  5. Unfasten any necessary retainers, then remove the fan assembly.
  6.  
  7. Installation is the reverse of the removal procedure.
  8.  



Click image to see an enlarged view

Fig. Fig. 1: View of the electric fan assembly mounting-1984 5.7L (VIN 8) engine shown

1989 Vehicles

See Figure 2

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the air cleaner and air intake duct.
  4.  
  5. If removing the engine cooling fan, perform the following:
    1. Detach the MAF sensor electrical connector.
    2.  
    3. Unplug the electrical connector from the fan motor.
    4.  

  6.  
  7. If removing the auxiliary cooling fan, perform the following:
  8.  



Click image to see an enlarged view

Fig. Fig. 2: View of the engine cooling and auxiliary fan mounting-1989 vehicles

  1. Detach the fan electrical connector. Feed the grommet and harness through the baffle.
  2.  

  1. Remove the upper fan assembly screws.
  2.  
  3. Remove the fan lower screw(s).
  4.  
  5. Remove the fan assembly from the vehicle.
  6.  
  7. Installation is the reverse of the removal procedure.
  8.  

1990-95 vehicles

See Figure 3

  1. Disconnect the negative battery cable.
  2.  
  3. If removing the primary (left) fan, perform the following:
    1. Remove the air intake duct.
    2.  
    3. Unfasten the power steering pump reservoir bracket-to-front crossmember bolts, then reposition the reservoir.
    4.  
    5. Detach the electrical connector from the fan motor.
    6.  
    7. Unfasten the screws holding the fan motor to the fan support.
    8.  
    9. Remove the bolts securing the fan assembly to the fan shroud.
    10.  
    11. Remove the end cap from the power steering pump pulley.
    12.  
    13. Remove the fan assembly from the vehicle.
    14.  

  4.  
  5. If removing the secondary (right) fan, perform the following:
    1. Remove the upper right bolt retaining the fan to the fan shroud.
    2.  
    3. Raise and safely support the vehicle.
    4.  
    5. Detach the electrical connector from the fan motor.
    6.  
    7. Unfasten the bolts retaining the fan to the fan shroud, then remove the fan assembly from the vehicle.
    8.  

  6.  



Click image to see an enlarged view

Fig. Fig. 3: Exploded view of the primary and secondary cooling fans-1990-91 5.7L (VIN 8), and 5.7L (VIN J, P and 5) engines

To install:
  1. If installing the secondary (right) fan, perform the following:
    1. Install the fan and secure with the bolts retaining the fan to the shroud. Tighten the bolts to 89 inch lbs. (10 Nm).
    2.  
    3. Attach the electrical connector to the fan motor.
    4.  
    5. Carefully lower the vehicle.
    6.  
    7. Install the upper right bolt securing the fan to the shroud.
    8.  

  2.  
  3. If installing the primary (left) fan, perform the following:
    1. Position the fan assembly, then install the bolts holding the fan to the shroud. Tighten the bolts to 89 inch lbs. (10 Nm).
    2.  
    3. Install the screws securing the fan motor to the motor support and tighten the screws to 89 inch lbs. (10 Nm).
    4.  
    5. Instlal the power steering pump reservoir bracket-to-front crossmember bolts.
    6.  
    7. Attach the electrical connector to the fan motor.
    8.  
    9. Install the end cap on the power steering pump pulley.
    10.  
    11. Install the air intake duct.
    12.  

  4.  
  5. Connect the negative battery cable.
  6.  

5.7L (VIN P and 5) Engines
1992 vehicles
  1. Disconnect the negative battery cable.
  2.  
  3. If removing the primary (left) fan, perform the following:
    1. Remove the air intake duct.
    2.  
    3. Detach the electrical connector from the fan motor.
    4.  
    5. Unfasten the fan-to-shroud screws, then remove the fan from the vehicle.
    6.  

  4.  
  5. If removing the secondary (right fan), perform the following:
    1. Remove the upper right bolt retaining the fan to the fan shroud.
    2.  
    3. Raise and safely support the vehicle.
    4.  
    5. Detach the electrical connector from the fan motor.
    6.  
    7. Unfasten the bolts retaining the fan to the fan shroud, then remove the fan assembly from the vehicle.
    8.  

  6.  

To install:
  1. If installing the secondary (right) fan, perform the following:
    1. Install the fan and secure with the bolts retaining the fan to the shroud. Tighten the bolts to 89 inch lbs. (10 Nm).
    2.  
    3. Attach the electrical connector to the fan motor.
    4.  
    5. Carefully lower the vehicle.
    6.  
    7. Install the upper right bolt securing the fan to the shroud.
    8.  

  2.  
  3. If installing the primary (left) fan, perform the following:
    1. Position the fan assembly and install the bolts securing the fan to the shroud. Tighten to 89 inch lbs. (10 Nm).
    2.  
    3. Install the screws retaining the fan motor to the motor support and tighten to 89 inch lbs. (10 Nm).
    4.  
    5. Attach the electrical connector to the fan motor.
    6.  
    7. Install the air intake duct.
    8.  

  4.  
  5. Connect the negative battery cable.
  6.  

1993-96 vehicles
  1. Disconnect the negative battery cable.
  2.  
  3. If removing the primary (left) fan, perform the following:
    1. Remove the surge tank/radiator pressure cap. Drain the engine coolant into a suitable container.
    2.  
    3. Remove the air cleaner assembly.
    4.  
    5. Remove the radiator upper deflector/shroud.
    6.  
    7. Detach the electrical connectors from the cooling fan relays.
    8.  
    9. Unfasten the bolts securing the A/C accumulator bracket to the radiator upper support, and position the bracket aside.
    10.  
    11. Remove the fan shroud-to-upper support retaining screws.
    12.  
    13. If equipped, remove the rubber access plug from the top of the radiator.
    14.  
    15. Unfasten the radiator air bleed/overflow hose clamp, then disconnect the hose.
    16.  
    17. Remove the nuts and bolt holding the upper support to the front side member.
    18.  
    19. Unfasten the bolts securing the oil cooler lines to the cooler.
    20.  
    21. Remove the seal retainers and seal from the oil cooler and A/C line.
    22.  
    23. If necessary, detach the electrical connection from the AIR pump and horn.
    24.  
    25. Remove the AIR pump.
    26.  
    27. Remove the bolt retaining the AIR pump bracket at the rear and loosen the front bolt.
    28.  
    29. Remove the air pump intake duct.
    30.  
    31. Unfasten the screws retaining the upper support to the lower support, then remove the upper support from the vehicle.
    32.  
    33. Remove the shroud upper retaining bolts.
    34.  
    35. Raise and safely support the vehicle.
    36.  
    37. Remove the impact/skid bar.
    38.  
    39. Detach the fan motor electrical connectors.
    40.  
    41. Remove the right fan assembly.
    42.  
    43. Remove the fan shroud with the left fan still attached.
    44.  
    45. Remove the left fan assembly from the shroud, then disassemble the left fan motor and blade, if necessary.
    46.  

  4.  
  5. If removing the secondary (right) side fan assembly, perform the following:
    1. Remove the upper bolts retaining the fan to the shroud.
    2.  
    3. Raise and safely support the vehicle.
    4.  
    5. Remove the bolts retaining the impact bar.
    6.  
    7. Detach the fan electrical connector.
    8.  
    9. Unfasten the lower bolts holding the fan to the shroud.
    10.  
    11. Remove the fan assembly. If necessary disassemble the fan motor and blade.
    12.  

  6.  

To install:
  1. If installing the secondary (right) side fan assembly, perform the following:
    1. Assemble the fan motor and blade, then install the fan assembly.
    2.  
    3. Install the lower bolts securing the fan to the shroud and tighten to 89 inch lbs. (10 Nm).
    4.  
    5. Attach the fan motor electrical connector.
    6.  
    7. Install the bolts securing the impact bar to the front extension and front crossmember. Tighten the bolts to 20 ft. lbs. (27 Nm).
    8.  
    9. Install the upper bolts retaining the fan to the shroud.
    10.  

  2.  
  3. If installing the primary (left side) cooling fan, perform the following:
    1. Instlal the fan blade and motor, then install the bolts retaining the left fan assembly to the fan shroud. Tighten the bolts to 89 inch lbs. (10 Nm).
    2.  
    3. Install the fan shroud and lower mount bolts and tighten to 80 inch lbs. (9 Nm).
    4.  
    5. Install the bolts retaining the right fan to the fan shroud.
    6.  
    7. Install the bolts retaining the impact/skid bar to the front extension and front crossmember and tighten the bolts to 20 ft. lbs. (27 Nm).
    8.  
    9. Carefully lower the vehicle.
    10.  
    11. Install the upper support and secure with the retaining screws.
    12.  
    13. Instal the nuts and bolts retaining the upper support to the front side member and tighten to 18 ft. lbs. (25 Nm).
    14.  
    15. Install the AIR pump intake duct. Install the bolts retaining the AIR pump bracket, then install the pump. Attach the electrical connectors to the AIR pump and horn, if necessary.
    16.  
    17. Attach the electrical connectors to the cooling fan relays.
    18.  
    19. Install the fan shroud-to-upper support screws and tighten to 80 inch lbs. (9 Nm).
    20.  
    21. Fasten the bolts securing the accumulator bracket to the upper support. Tighten to 80 inch lbs. (9 Nm).
    22.  
    23. Install the retainers to the oil cooler/A/C line seal.
    24.  
    25. Fasten the bolts retaining the oil cooler lines to the cooler and tighten to 89 inch lbs. (10 Nm).
    26.  
    27. Attach the air bleed hose/overflow hose and secure with the retaining clamp.
    28.  
    29. Install the access plug.
    30.  
    31. Attach the upper air deflector.
    32.  
    33. Install the air cleaner assembly.
    34.  
    35. Fill the radiator with the proper type and amount of coolant.
    36.  
    37. Start the engine, and allow to run (with the radiator cap still removed), until the upper hose is hot (thermostat is open). With the engine idling, add coolant to the radiator until it reaches the bottom of the filler neck.
    38.  
    39. Install the filler cap. Inspect for leaks. Turn the engine OFF .
    40.  

  4.  

 
label.common.footer.alt.autozoneLogo