GM Corvette 1963-1982 Repair Guide

Auxiliary Engine Cooling Fan

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GENERAL INFORMATION



See Figure 1

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Fig. Fig. 1: Auxiliary electric cooling fan used on most 1979-82 models

Most 1979-82 Corvettes equipped with the heavy duty cooling system option use an auxiliary electric cooling fan. The auxiliary fan is used to supplement the engine-mounted fan during conditions of very high engine temperatures. The auxiliary fan circuit is energized anytime the ignition switch is in the RUN position, though the fan itself will not operate until the engine coolant temperature reaches 238 as sensed by the cylinder head-mounted coolant temperature sensor. When the coolant temperature decreases to approximately 201 the fan will turn off.


CAUTION
Keep hands, tools, clothing, etc. clear of the auxiliary fan. The fan can come on automatically even when the engine is not running.

REMOVAL & INSTALLATION



See Figure 2

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Fig. Fig. 2: Engine cooling fan and related wiring

  1. Disconnect the battery cables at the battery.
  2.  
  3. Remove the fresh air scoop.
  4.  
  5. Remove the engine-mounted cooling fan.
  6.  
  7. Remove the upper radiator shroud screws.
  8.  
  9. Remove the three fan bracket-to-shroud fasteners, remove the fan and motor assembly and disconnect the wire from the fan motor.
  10.  
  11. Installation is the reverse of the previous steps.
  12.  

 
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