If the fan does not work, check the new fuse to be sure it has not blown. If it has blown, contact your mechanic for repairs. If the fuse is OK, but the fan does not work, keep reading… Relay issues. Bad relay: The relay for the radiator fan system is also found in the fuse box. The radiator fan relay controls the delivery of power to the fan The first thing that you would want to do is locate the fuse for your Town and Country’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. In some cases, the radiator fan will require the radiator fan when the temperature sensor in the bottom tank of cooling fluid exceeds roughly 212F. The radiator fan only turns on when the AC is switched on because there is an issue with either of these components: Thermostatic switch. Fan resistor. Temperature switch. To test each fan, you can jump each fan through the connectors (located on the fan shroud, should be clipped on the shroud) straight from the battery using test leads and proper probes. If both fans turn on, fans are then okay. Now you will have to look for an open in the circuit of each fans. How does a radiator fan motor work? A mechanical fan is connected to the engine directly by drive pulleys. This type of radiator fan is controlled by a thermal fan clutch that senses radiator heat. After sensing the heat temperature, the radiator fan turns on when the engine is running at a higher temperature. Insert the probe until there is about an inch remaining outside of the core. Don't insert and remove the probe in the same position several times. Route the temperature probe and all wires before mounting the controller to make sure everything will reach. Always run the positive and negative leads from the controller directly to the battery. The first thing that you would want to do is locate the fuse for your F150’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. A. The radiator fan may not be working when the AC is on due to a faulty fan motor, a blown fuse, a malfunctioning relay, or a problem with the temperature sensor. It’s important to have it diagnosed and repaired by a professional to prevent overheating and potential damage to the engine. Obi2Gy.

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