F4i lower temp fan switch & maybe other models
#1
F4i lower temp fan switch & maybe other models
I did this mod with part # TFS517 switch from Advance Auto Parts. You can also use a part # SW524 switch from Autozone. These switches are listed for the '83 Nissan Pulsar. Replacing the switch is simple after removing any fairing that is in the way. Just take the old one out, swap the o-ring onto the new switch, then install it. Do this with the engine cold and have someone there to hold their finger over the hole in the radiator while the switch is out. Leave the radiator cap on so as not to create a vent and you won't lose 2 tablespoons of coolant.
Wiring isn't too complicated. The new switch will have 2 wires terminating in a plug instead of a single spade terminal. Clip the wires close to the plug and crimp a male spade terminal onto one of the wires (doesn't matter which wire as it just completes a ground to energize the fan), then plug the wire from the bikes fan onto it. Splice an 8-10" piece of wire onto the switch's other wire. Crimp a ring terminal onto the other end of it and attach it to the top fan bolt along with its existing ground wire.
My fan is now on at 212, off at 197 instead of on at 225, off at 220 and it's much cooler to ride in traffic.
Wiring isn't too complicated. The new switch will have 2 wires terminating in a plug instead of a single spade terminal. Clip the wires close to the plug and crimp a male spade terminal onto one of the wires (doesn't matter which wire as it just completes a ground to energize the fan), then plug the wire from the bikes fan onto it. Splice an 8-10" piece of wire onto the switch's other wire. Crimp a ring terminal onto the other end of it and attach it to the top fan bolt along with its existing ground wire.
My fan is now on at 212, off at 197 instead of on at 225, off at 220 and it's much cooler to ride in traffic.
Last edited by backroad; 01-29-2010 at 09:00 PM.
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