You likely already know the purpose of the radiator and the cooling in your car.
When you are driving allegro, the wind passes done the radiator to cool the coolant downcast without issues, simply when you are driving slow, no tip is pushed through the radiator. This is why we enjoyment a radiator fan.
Unluckily, the radiator rooter can give out and bequeath cause your car to overheat.
What causes the radiator to stay working?
The most common reasons a radiator fan is not operative are luckily callable to a blown fuse, repentant electrical relay, or a broken wire. Information technology can also be caused aside a faulty coolant temporary worker sensor, broken coolant level or the fan itself can embody damaged.
Patc these are approximately of the reasons, information technology is not all of them. Here is a Thomas More detailed list of the most usual causes of a radiator fan not coming connected:
7 Reasons Why Your Radiator Fan is Not Working
1. Breathless Fuse
A fuse supports almost everything electrical in a car. If there is an electrical surge going towards a firearm of electronic equipment, the conflate cuts the electric supply to it particular equipment saving information technology from devastation. This is what we call a blown fuse.
A blown fuse is no big make do, and changing same does not price much of money. If your car's radiator fan is not-functional, check your automobile's user manual and locate the fuse for the radiator buff controller or the fan.
The fan itself oftentimes uses a big fuse of around 50A, while thither might also follow a carve u small fuse to the fan control module. Commend that if the fan fuse is blown – in that location might be a problem with the wirings or the radiator fan.
2. Faulty Coolant Temperature Sensor
On that point are often two different systems in distinct auto models. Either your winnow ascendancy is integrated into the engine control unit, or you sustain a separate fan control module. In some cases, the control units use a temperature sensor to know when to start the radiator fan.
If this temperature sensor is broken, the control social unit will non know when to start the radiator fan.
Some cars use set-apart engine coolant temperature sensors for the radiator sports fan and the locomotive control unit.
You need to learn your repair manual of which temperature sensing element controls the radiator buff and past resistivity-measure the sensor with a multimeter to ensure it is functional.
3. Broken Wiring or Bad connection
If the devotee is non working even when the automobile is overheating, there might comprise a wiring issue or a bad joining.
Gibe the wirings going to the radiator buff from the control unit or relay. Check in the connective plugs for any signs of erosion. Too, check the connection plugs at the relay and command unit.
Measuring the wirings with a multimeter is often non very effective, as you need to put a load on the wires to attend if they are functional. Yet, American Samoa a fast mental testing, you can check with a multimeter if power is coming to the radiator fan.
4. Lean Coolant
If your coolant level is down in the mouth, there is a chance that you bequeath engender gentle wind in the scheme, and the coolant temperature sensor will not read the coolant temperature aright. If the coolant level is low gear, you need to refill the coolant to optimum levels.
Failing to execute so could risk your locomotive decorous overheated and confiscated. There is no coming back from a appropriated engine unless you are willing to spend a lot of money.
5. Broken Radiator Fan
When your radiator fans are non future on, it can also be caused aside faulty radiator fans. The radiator fans have electrical motors inside of them, which will wear out subsequently some days.
You can test the electrical radiator fans by taking a wire from the car battery, unplug the radiator lover connective, and put 12v+ and ground into the connector. This is the quickest and easiest way to psychometric test your radiator fans.
6. Faulty Fan Relay
Because the radiator fan is often drawing so practically baron, there is often a relay powering the coolant fan. Of course, this relay can get flyblown, which will cause the radiator buff to non coming happening.
The fan relay is a great deal located in the engine bay's fuse box, but the optimum fashio is to check your repair manual of arms to find where it is located.
Examination a 4 pin relay is often very straightforward. Take out the relay and give 12 volts to pin 30 and 85. Ground pin 86 and moderate if there is electric potential coming out from pin 87. It is true better to connect immobilize 87 to something that draws very much of power, the like the fan, for example.
7. Bad Fan Controller Module
Equally I discussed before, some cars have a asunder control module for just the radiator fan control. This control module is oftentimes installed in the engine bay, exposed to heating and dust. This can make the control module fail afterward a while because of corrosion.
Locate the relay and check for any optical damages inaccurate of it. You can ofttimes also open up the electrical relay and check for any bad solderings or corrosion. Supplant information technology if you go out any problems.
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Source: https://mechanicbase.com/electric/radiator-fan-is-not-coming-on/
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