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radiator thermal fan switches

N nazgulMember
hi, and a belated happy easter everyone!!!!!!

when i got my vehicle, the prior owner had bypassed the radiator themal sensors and ran the radiator fans by manual switches, i decided to rewire and run the fans via thermal sensors.
i have a horizontally split radiator with a mounting hole for the sensors in the top section and in the bottom section.

question, does it matter which sensor goes where? high temp sensor in the top or bottom of the radiator??

thanks in advance

nazgul
Original Post
George PGeorge PAdmin.
Hot coolant from the motor enters the "lower" tank. The high temp thermal switch is installed in the lower tank. The oem switch was set at 185 degres F/85 degrees C. The hex shaped replacement switch is set at 77 degrees C.

Cooled coolant exits the upper tank. The low temp thermal switch is installed in the upper tank. The oem switch was set at 158 degrees F/70 degrees C. The hex shaped replacement switch is set at 60 degrees C.

You'll find, with a 180 degree thermostat installed in the motor, that once the motor stabilizes at operating temperature, both fans will run continuously.

cowboy from hell
Views: 193
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