Electric Fan Thermostat Switch Location

This video shows how an normally open cooling fan switch works.

Electric fan thermostat switch location.

A toggle switch can be wired into the system to manually override the cycling of the fan. If the engine in question is an lt1 then putting a fan trigger here would correct because it s sampling the hottest coolant in the. 140 f 210 f electric radiator fan thermostat switch 1 8 1 2 inch npt temperature sensor probe. I would install the temp gauge sender as close to the thermostat as i can get it.

You want the fan to come on only after the thermostat is fully open. Pre wired connector plugs into fan connector and the red wire is routed to the relay via an inline crimp connector. And off at 165 f. Fan thermostat relay 175 to 185 degree wiring switch kit for 330 351w engines.

I also show how i tested my cooling fan switches. The thermostat is actually on the inlet side of the water pump. The thermostatic fan switch is located under the hood in the center rear engine area below valve cover and is mounted on lower driver side of engine block. Before replacing the switch check to see if the wiring harness is connected to the switch.

If you are going to switch on the fan from the inlet to the engine it would have to be set at a lower temp than if you had it connected to the outlet of the engine. Depending on the model the thermostat sending unit triggers the fan on at 185 f. The switch turns on at 203 degrees fahrenhe. Or on at 195 f.

New cooling fan control unit module relay for vw audi 1999 2012 1j0919506k. As long as the fan switch is as close to the thermostat as possible in the manifold by the tstat in the thermostat housing or in the radiator you ll be fine. And off at 175 f. I can t see why you d want the thermo fan kicking in if the thermostat is not fully open.

The thermostatic fan switch turns on the electric fans when the engine has reached operating temperature.