Toyota Platz Auto Radiator Fan not working

Radiator Fan Not Working: Symptoms

If you need to confirm if its working order or not, you should turn on your engine and let your vehicle idle position. The surest way to check it is by actually looking for the fan’s sound fan start when engine on right temperature. 

Turn the air conditioning to the maximum setting, this should spark the cooling fan to immediately on position. In older cars, this typically takes about 15-20 minutes for the engine to reach the right temperature and then fan on position.  

All you have to do is lift the hood and listen closely for the sound of the fan. The best of modern cars have very quiet engines and so, it may not be easy to figure out sound while you are inside the car. 

If the fan comes on immediately when the air conditioning is operating  however doesn’t run properly when the engine gets hotter later on, the radiator fan might not be working properly.

Can I drive my vehicle if the fan is not working condition

Yes, your car can still run you car without a radiator fan, but you never should. Your car’s cooling system is crucial to the engine’s performance and lifespan. Every time your engine overheats, you’re causing tremendous damage to the precious engine parts.

As soon as you feel like your radiator fan has stopped or your car is not getting cool, you need take some troubleshooting steps in order to determine why the fan not work. If you can not figure it out, take your car to a mechanic right away so he can determine the issue with your fan

1. A Bad Fuse

It is a very common problem that results in radiator fan failure is the fuse burn or simply fall off. You will, though, have to consult the owner’s manual to find out where exactly you can find the  fuse box, but once you have, it is an easy task. You  need to replace the fuse of radiator fan in case it is not working or is absent.

Remember, if anything electrical in your car does not work, your first checkpoint is the fuse box. how to test the radiator fan fuses with a multimeter.

You have to check the voltage of a few fuses in the under-dash fuse box (number 3, 15, or 20) and under the hood fuse box (number 47 and 50). Kick off the engine or switch the ignition key off to Ignition. Set the multimeter meter to ‘20’ in the DCV section as you will be testing 12V circuits.

The black multimeter wire probe will go to the negative battery terminal (for under-hood fuses) or a metal ground point on the car (for under-dash fuses). Each fuse has two contacts where you have to touch the multimeter’s test probes to get the readings voltage.

Touch the red wire to any of the two contacts and take the reading. The value should be around 12 volts. Touch the robe to another contact and take the reading.

What do the readings mean?

12V on both contacts. It means the fuse is working fine and you can just move on to check the next one.

12V one contact and 0V on the other contact. This is the sign of a burn fuse. You need to replace it.

0V on both contacts. It means the fuse does not any power, which only possible if black wire is not properly connected to the negative terminal of the battery or grounded to a metal part. Detach the probe and then reconnect again to take readings on fuse.

2. Dead Wires

If you see the engine heating but the radiator fan is not work, the fan wires could be  culprit. Simply unplug both  wires, negative as well as positive. The standard direct current they must put out 12v. Take a meter and check for the  current. If there is none in both, you will need to replace it.

You will be able to locate the fan relay under the hood on fuse box. Check for current from relay till the fan is working. That is where the current needs to flow. If there is voltage present on wires, a fault in fan is the reason for the radiator fan motor not working. fan motor that you will need to replace.

3. Broken Fan Clutch

Some cars The fan clutch is responsible for attaching the radiator fan to the engine and makes it work. If  clutch goes broke, the fan won not work. It is usual wear and tear over  years that may cause the springs in  clutch to corrode or even burn out. If you cannot find any other radiator fan problems, the clutch is most likely the cause for not working fan.

4. Inadequate Coolant Level

Inadequate coolant level in engine can also cause of fan motor failure. Simply look at the coolant level and check if  level is up to the requisite maximum mark. If not, simply fill it to the mark and you will be good to go.

5. Defunct Temperature Sensor

Temperature sensor is the mechanism that decide when the radiator fan motor must kick into action. It does by reading the temperature of the cooling system. In case this sensor is out of order, the fan won’t be able to start working. You are likely find this sensor in the thermostat cover. You can try disconnecting the wires from and reconnecting them, odds are that it’ll work. If not, you will have to  replaced it.

6. Bad Radiator Fan Motor

If the problem of the radiator fan motor not working , you can check the fan by connecting a power source to it, that is direct battery power. 

First, unplug the wiring connector. Check for any damage on it and clean the connector. Ensure that wires are firmly attached and are not damaged. Then, look at the wires and identify which ones are power wire and which ones are ground wire to avoid any confusion. 

Next, connect the battery negative to ground side of the fan connector, then connect  positive battery to other wire. You may need to look at your vehicle repair manual to see if your car has a 4-wire terminal or three terminals, with two for power and one for ground wires. 

After being connected to the battery, your radiator fan should running. However, if your radiator fan doesn’t begin working with the direct power or runs at a very low speed then the problem is a failing fan motor and you’ll need to replace the fan motor.

How Long time Does It Take To Replace A Radiator Fan?

Replacing a radiator is a laborious process, and the time duration varies depending on skills of the service . A professional mechanic is unlikely to take more than 2 hours. It could another 30 minutes to one hour because the process involves some extra service like removing coolant, broken belt, and a few other thing, if necessary.

Expert may need two to three hours for the installation fan motor.

You may need more time depending on the conditions of  other parts. If the car is old, there is a possibility that electrical connectors and terminals are damaged too and the fasteners are broken. You will need to repair and replace  parts for the radiator to resume its operation. Some mechanic may also want to change the antifreeze water