Why are my radiator fans not spinning?

Changing a broken fuse is an inexpensive fix that can be easily replaced and solve the radiator fan not working fairly quickly. Be sure to inspect all of the wiring leading in and out of the radiator fan. If your wire has worn out due to environmental factors, like heat, it will need a replacement.

Should both radiator fans turn on?

Both radiator fans should always run when the AC compressor is engaged. Both radiator fans should always run when the coolant temperature sensor in the bottom tank of the radiator reaches about 212*F.

Will a bad radiator fan cause AC not to work?

Yes, a broken radiator fan can cause the air conditiong to stop working. The AC system depends upon being able to dissipate heat into the engine coolant. You really need to have the fan replaced, or at least, have a diagnostic check to see what is causing the fan to stop working.

Will radiator fan come on if thermostat is bad?

If the thermostat is stuck open (allowing coolant to flow) it can cause the engine to run cooler than normal so obviously the fan wouldn’t come on..but not like the engine/coolant can be running too hot and the thermostat somehow effects the sensor reading or operation of the fan.

Why is my Honda radiator fan not working?

If the radiator fan begins working, this is an indication that the fan relay is bad. If the fan switch relay is giving off the appropriate readings and is in working condition, move on to the next step. The thermo switch (also called the cooling fan switch) sends a signal to the cooling fan, so the fan turns on if the coolant gets too hot.

How much does it cost to replace a Honda radiator fan?

Radiator fan testing points. If the radiator fan is in working condition, move on to the next step. The ECT sensor monitors the coolant temperature, and allows the fan to turn on if the coolant is too hot. If this sensor is faulty, a replacement costs around $25 to $45.

What does the thermo switch on a Honda radiator do?

If the fan switch relay is giving off the appropriate readings and is in working condition, move on to the next step. The thermo switch (also called the cooling fan switch) sends a signal to the cooling fan, so the fan turns on if the coolant gets too hot.

How can I tell if my radiator fan is working?

Here is how to test if the fan is functioning properly: Unplug the radiator fan connector. Run jumper wires between the connector’s two electrical terminals. See Contact Test in Step 1. If the fan does not turn on, you will need to replace it. Figure 3. Radiator fan testing points.