I replaced my radiator cooling fan motors both of them on my Dodge Grand Caravan and i replaced the relay and fuse and coolant temparature sensor and my fans still won't work.

Dodge Caravan Radiator Fan Not Working Chrysler Town and Country Radiator...

make sure the electrical connector is connected properly.there is also a relay that controls the fans.it sounds like the fans were working before the rad was changed so its probably something simple.make sure the cooling system is full of coolant as if its low the sensor that sends the signal to the computer to turn on the relay to turn on the fans may not be getting reading the proper temperature.

improper coolant level, temp sensor not turning elec fan on. elec cooling fan failure.

HOT WIRE COOLANT FAN. STILL DONT TURN ON REPLACE FAN ASSEMBLY. IF COOLANT FAN DOES TURN ON WHEN HOT WIRED.CHECK THE FAN RELAY OR FUSE ALSO SCAN VECHICLE FOR FAULTY COOLANT TEMPERATURE SENSOR IF ENGINE COOLANT TEMPERATURE IS 190 DEGREES AND SCANNER SHOWS 80 OR LOWER COOLANT TEMPERATURE SENSOR FAULTY.

If you have checked the relay module under the fans,on drivers side,and they are fine,replace the coolant sensor,and make sure all the air is bled out of the cooling system.

The fans are actuated by coolant temp in the radiator. It is possible to have overheated coolant in the radiator, causing the steam, and your engine not overheating...the temp sensor for your engine is reflecting the engine temp, not the temp of the coolant in the radiator. You problem could be a bad temp sensor at the radiator...not allowing the fans to come on. Good Luck! I hope you find this to be very helpful!

The device that turns the radiator fan on is a temperature sensor on the lower radiator hose towards the engine block. That could be the switch that you are referring to. When the coolant reaches a certain temperature it tells the radiator to turn on. The relay then sends the power to the fan.

dont think so,seem to remember a reostat somewhere at the bottom of the rad right hand side ,check for earth problems as well ,sorry if vague but i seem to be forgetting things as i get old .

cooling fan relay and/or the engine coolant temperature sensor.

the cooling fan relay is not in the fuse box.

it is a solid state relay bolted to the radiator core support just behind the bumper