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Electric fan rad probe

D1esel

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Mar 11, 2025
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Location
Parksville,British Columbia,Canada
I'd like to move my fan temp sensor from the water pump so I can intall a mechanical temp gauge. I'm thinking a temp probe in the rad fins might work. Any comments?
 
I'd like to move my fan temp sensor from the water pump so I can intall a mechanical temp gauge. I'm thinking a temp probe in the rad fins might work. Any comments?
Most water pump housing I've had have 2 ports that can be used. Look for a pipe plug near the heater hoses. Mine came out quite easily.
 
I added (brazed) a bung to the radiator just above the fins so the probe is in the water. Reason was that the radiator temperature should trigger the e-fan, not the WP housing temperature (before vs. after thermostat).
Temperature gauge is hooked up to the WP housing though.
 
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