Why is the radiator fan not working on my Honda Civic?
If your Civic is running hot, and the fan is not running we’ve laid out the most common causes of this issue below. There are a few simple reasons that the fan would not be cycling on. Although the fan itself can go bad, that’s definitely not the place to start a diagnosis. Here are the most common reasons that your radiator fan does not turn on:
Why is my Honda Civic not turning on?
If the fan isn’t kicking in, then there a few things that could cause that. One of the reasons could be a faulty thermostat, as the thermostat tells the fan when to turn on and off. Another reason could be that the fan’s wiring harness is not getting power to actually turn the fan on.
What should I do if my Honda Accord fan is not working?
Check if the cooling fan switch is working properly, and that there is no sign of wear or faultiness. If the cooling fan switch is not working, it is easy to replace yourself. A new one will cost you around $30. Figure 4. Diagram of Honda Accord cooling system with the location of the thermostat housing.
Why is my Honda Civic overheating at low speeds?
But when the car is driving at low speeds or at a standstill, it’s up to the fan to do that job. If the fan isn’t kicking in, then there a few things that could cause that. One of the reasons could be a faulty thermostat, as the thermostat tells the fan when to turn on and off.
Why is my radiator fan not working on my Honda Civic?
Figure 1. 1999 Civic under-hood fuse box with location of fan relay (circled in red). Another easy way you can check if the radiator fan switch relay is bad is to swap the radiator fan relay with the condenser fan relay. If the radiator fan begins working, this is an indication that the fan relay is bad.
Why does my Honda Civic not turn off?
You can disconnect the battery overnight to prevent battery drain or someone stealing the car. That’s weird. I thought shifting the car into Park would turn off accessory mode. Not sure if it’s a glitch or something wrong with your start/stop button. Probably best to bring it in to the dealership.
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.
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.
If your Civic is running hot, and the fan is not running we’ve laid out the most common causes of this issue below. There are a few simple reasons that the fan would not be cycling on. Although the fan itself can go bad, that’s definitely not the place to start a diagnosis. Here are the most common reasons that your radiator fan does not turn on:
Why are my coolant fans not running when AC is turned on?
Coolant fans not running when ac is turned on. AC compressor clutch engage then it will disengage. System has freon in it. It was working find but now nothin7. My car has 234565 miles. My car has an automatic transmission.
Why is the radiator fan not working on my Honda Odyssey?
The Radiator Fan is not working during Normal Engine Run, but when i Turn-ON the AC, the Radiator Fan and Condenser Fan is working synchronously (Start and Stop at the same time). I could not locate the Radiator Fan switch?
Do you turn the radiator fan on or off?
The coolant temp has to be hot for the fan to come on. Yes, the fan will come on when you turn the A/C on, so that proves the fan works. Leave the A/C off for the rest of the test. Start your vehicle, and let it idle for 10-15 minutes.