Here's a step-by-step process for how a cooling system works: When you start your engine, the water pump immediately begins pumping coolant from the lower radiator tank into the coolant passages surrounding the engine cylinders. Coolant flows first to the engine block and then to the cylinder head, absorbing heat along the way to the radiator
The first thing that you would want to do is locate the fuse for your MKX’s radiator fan and make sure that it hasn’t blown. If it is blown, replacing the fuse will only solve the problem for a very limited period of time. Unless the wiring issue is fixed, the fuse will blow again. The wiring harness itself can go bad.
Test the fan motor. Connect the motor directly to 12-volt power with jumper wires to see if the fan spins properly. If it doesn’t, the motor is likely burnt out. Check the coolant temperature sensor. A signal from the coolant temperature sensor is what triggers the ECU to turn on the radiator fan, and if it’s faulty, it can prevent the fan
The cooling fan in the engine compartment should turn on to pull air through the radiator and A/C condenser. On many vehicles, there may be two fans: a main cooling fan for the radiator, and a second fan for the condenser. The engine may also run hot and overheat, too. How do dual radiator fans work? Dual Radiator Fan- dual fans are assembled The fan shroud allows a smaller radiator to be used. The most critical cooling situation for the OEMs designing for ma/pa America driving to the grocery store is hot idle, stopped in traffic cooling. In this condition without a shroud the only air passing thru the radiator core is that area directly in front of the fan.
3. Let the car idle and set the AC to the coldest setting. If you don’t have AC, just wait for the car to warm up while idling and check if the radiator fans in the engine bay turn on. If not, they are likely the issue. The fans normally only work when the car needs extra cooling while driving and/or it’s not driving.

Conclusion. Radiator fan boosters can be a cost-effective and energy-efficient solution for improving heating efficiency in homes. They work by circulating warm air more effectively around a room, reducing the amount of energy needed to maintain a comfortable temperature. Radiator fans can also help reduce heat loss through pipes and enable

A better arrangement for controlling the fan on an air-conditioned vehicle is shown in Fig. 3. A pressure switch that closes on increasing high-side a/c pressure will run the fan. At highway speeds, when there’s sufficient airflow over the condenser and radiator, the switch stays open and the fan doesn’t run. If you're coolant temperature is 125 degrees, it's the same as 0 to the sender, and it's switched off. If your coolant temperature is 210 degrees, it's the same as seeing 185 degrees, and it's switched on. This sender detects 185 degrees and turns on, and when the temperature drops to about 175 degrees, it turns off; about a 10 degree window is YrSkfZ.
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    • how does radiator fan work