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Installing an electric fan switch???

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Old Feb 3, 2013 | 02:24 AM
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Installing an electric fan switch???

I was wondering if I can install a manual on/off electric fan switch on my 7.3L? The fan/fan clutch is stock.
 
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Old Feb 3, 2013 | 06:56 AM
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You can install a switch, but what is it going to operate? There is no electric fan on your truck, The stock fan clutch is mechanical, not electrical.
 
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Old Feb 3, 2013 | 07:12 AM
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And even if you converted it to an electric fan, it is best to make it operate off of engine/coolant temps. A manual switch means you must ALWAYS watch the temp gauge or run the fan all the time....then there is no reason for a switch.
 
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Old Feb 3, 2013 | 08:04 AM
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If you remove the stock fan and clutch and replace it with an electric fan don't work the truck hard. It will overheat. There is a reason no heavy duty truck uses an electric fan. That reason is they don't move enough air.
 
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Old Feb 3, 2013 | 08:29 PM
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It is mechanical and what I wanted to do was to be able to turn the fan on just before a hill climb to keep the engine cool so it wouldn't have to work as hard to cool back down once it hit 210/215 degrees. I have not had any problems with it so it's kinda one of those things if it aint broke don't fix it. more or less I have a rocker switch that says engine fan and wanted another switch on the dash. thanks.
 
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Old Feb 4, 2013 | 08:10 AM
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There is no way to turn on a mechanical fan clutch with an electrical switch.
 
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Old Feb 4, 2013 | 08:33 AM
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Originally Posted by scotttahoe
It is mechanical and what I wanted to do was to be able to turn the fan on just before a hill climb to keep the engine cool so it wouldn't have to work as hard to cool back down once it hit 210/215 degrees. I have not had any problems with it so it's kinda one of those things if it aint broke don't fix it. more or less I have a rocker switch that says engine fan and wanted another switch on the dash. thanks.
And even if you were able to rig something up you wouldn't see much of an improvement. Remember that your thermostat is going to restrict flow to your radiator to maintain temp, and that thermostat doesn't know the hill is coming. So turning on the fan early will cause the thermostat to close to hold engine temperature despite the increased airflow.

There is seriously nothing to be gained here.
 
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