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The fan on my 86 GL is always on when the key is forward.


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There should be a mechanical fan on the WP pulley. The electric fan does come on with ac, and the relays are located on the firewall behind the strut.

 

the fan is powered by the accessory circuit

 

see if the fan operates with the terminal on the radiator unplugged. IF it does, it would be ac relay related.

 

if not, the thermo switch is stuck closed(on the radiator)

 

if you unplug it, you can make the fan come on by jumping the thermoswitch terminals. you can make a manual switch here at these connectors to override the thermoswitch.

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