what cuse cooling fans to come on on a2006 dodge caravan
You probably already know the purpose of the radiator and the cooling system in your car.
When you are driving fast, the air current passes through the radiator to cool the coolant down without problems, merely when you are driving boring, no wind is pushed through the radiator. This is why we use a radiator fan.
Unfortunately, the radiator fan tin fail and volition cause your machine to overheat.
What causes the radiator to stop working?
The nearly common reasons a radiator fan is non working are luckily due to a blown fuse, bad relay, or a broken wire. It can likewise be caused past a faulty coolant temp sensor, low coolant level or the fan itself can exist damaged.
While these are some of the reasons, it is not all of them. Here is a more detailed list of the nearly mutual causes of a radiator fan non coming on:
7 Reasons Why Your Radiator Fan is Non Working
ane. Blown Fuse
A fuse supports almost everything electric in a machine. If there is an electrical surge going towards a slice of electronic equipment, the fuse cuts the electrical supply to that particular equipment saving it from destruction. This is what we phone call a blown fuse.
A blown fuse is no big deal, and changing one does non cost a lot of money. If your car's radiator fan is not-functional, cheque your car's user manual and locate the fuse for the radiator fan controller or the fan.
The fan itself frequently uses a big fuse of around 50A, while there might also be a separate pocket-size fuse to the fan control module. Think that if the fan fuse is blown – at that place might exist a problem with the wirings or the radiator fan.
ii. Faulty Coolant Temperature Sensor
There are oft ii dissimilar systems in unlike car models. Either your fan control is integrated into the engine control unit, or you lot accept a separate fan control module. In both cases, the control units use a temperature sensor to know when to start the radiator fan.
If this temperature sensor is broken, the command unit will non know when to start the radiator fan.
Some cars utilise separate engine coolant temperature sensors for the radiator fan and the engine command unit.
You need to check your repair transmission of which temperature sensor controls the radiator fan and and so resistance-measure the sensor with a multimeter to ensure information technology is functional.
3. Broken Wiring or Bad connexion
If the fan is non working fifty-fifty when the automobile is overheating, there might exist a wiring issue or a bad connection.
Check the wirings going to the radiator fan from the command unit or relay. Bank check in the connector plugs for any signs of corrosion. As well, check the connector plugs at the relay and command unit.
Measuring the wirings with a multimeter is often not very constructive, every bit yous need to put a load on the wires to see if they are functional. Withal, as a fast test, you lot can bank check with a multimeter if ability is coming to the radiator fan.
4. Insufficient Coolant
If your coolant level is low, in that location is a chance that you will get air in the system, and the coolant temperature sensor volition not read the coolant temperature correctly. If the coolant level is low, you need to refill the coolant to optimum levels.
Failing to practise so could gamble your engine condign overheated and seized. There is no coming back from a seized engine unless you are willing to spend a lot of money.
v. Broken Radiator Fan
When your radiator fans are not coming on, it can also be caused past faulty radiator fans. The radiator fans have electrical motors inside of them, which will wear out after some years.
Yous tin examination the electric radiator fans by taking a wire from the machine battery, unplug the radiator fan connector, and put 12v+ and footing into the connector. This is the fastest and easiest way to test your radiator fans.
6. Faulty Fan Relay
Considering the radiator fan is oftentimes drawing then much power, there is often a relay powering the coolant fan. Of course, this relay can get damaged, which will cause the radiator fan to not coming on.
The fan relay is often located in the engine bay's fuse box, but the best manner is to check your repair transmission to find where it is located.
Testing a 4 pivot relay is often very straightforward. Remove the relay and give 12 volts to pin thirty and 85. Ground pin 86 and check if there is voltage coming out from pin 87. It is even better to connect pivot 87 to something that draws a lot of ability, similar the fan, for example.
seven. Bad Fan Controller Module
As I discussed before, some cars have a split control module for just the radiator fan control. This control module is often installed in the engine bay, exposed to rut and dust. This can make the control module fail afterwards a while considering of corrosion.
Locate the relay and bank check for any visual amercement outside of it. You can often also open upward the relay and check for whatsoever bad solderings or corrosion. Replace information technology if y'all encounter whatever bug.
Source: https://mechanicbase.com/electric/radiator-fan-is-not-coming-on/
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