See Figure 1
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.
REMOVAL & INSTALLATION
See Figure 2
- Disconnect the battery cables at the battery.
- Remove the fresh air scoop.
- Remove the engine-mounted cooling fan.
- Remove the upper radiator shroud screws.
- Remove the three fan bracket-to-shroud fasteners, remove the fan and motor assembly and disconnect the wire from the fan motor.
- Installation is the reverse of the previous steps.