What temp do Subaru fans turn on?

Subaru Fan Activation Temperature
The temperature at which the radiator fans in a Subaru vehicle turn on can vary based on different factors such as vehicle speed and air conditioning usage. According to the Subaru factory service manuals, the engine control module (ECM) is responsible for turning the fans on and off at specific engine coolant temperatures (ECT), taking into account the vehicle speed and whether the air conditioning is on. Specifically, with the air conditioning off, the fans should come on at low vehicle speed at between 205 and 210°F, and at high speed if the coolant reaches 212°F or more.
Additionally, it’s noted that vehicles now carry more engine temperature than in years past, and it is not uncommon for electric cooling fans to cycle on at 219-221°F and off in the low teens. However, the specific temperature at which the radiator fans turn on can also depend on the vehicle model and year. For instance, in a 2009 Subaru Impreza, the fans may turn on when the temperature of the block/radiator is getting towards 210°F.
It’s important to note that the temperature at which the radiator fans turn on can also be influenced by factors such as the thermostat and the radiator fan switch. If these parts fail, the radiator fan may not turn on or off properly, leading to potential overheating issues.
In summary, the activation temperature for Subaru radiator fans can vary based on different factors such as vehicle model, year, and specific conditions such as vehicle speed and air conditioning usage.

Should radiator fan turn on when AC is on?

First, run the AC and see if the radiator fan runs: it’s supposed to run with the AC by default. If it doesn’t run, you likely have a low level of refrigerant in the system or a faulty switch or a sensor, or a bad fan motor, fuse, relay, or a wiring problem.

Why is my cooling fan not turning on with the AC?

In short, common issues that can cause an air conditioning unit fan to stop spinning are electrical issues, problems with the capacitor, contactor issues, a burnt out air conditioner motor, a broken fan belt, or clogged air filter.

How long should car cooling fan stay on?

Once you turn off the engine, the car’s computer senses that the radiator is at a higher temperature and still needs to dissipate heat. But if your radiator fan stays time generally more than 2 minutes, then contact service repair. There is probably a part that can go wrong.

How long should a car run before fan comes on?

There is no set time as the cooling fan works on temperature. If the coolant goes above a set temperature the fan comes on and does not go off until the lower hysterisis set point is reached.

Why does the cooling fan come on when the car is cold?

Cooling fan comes on when car is cold
If your car’s cooling fan comes on when it’s cold, this could be a result of the cooling system’s thermostat being stuck in a closed position, a problem with the cooling fan relay, or a damaged temperature sensor.

What temp should radiator fans come on?

between 200 and 230 degrees Fahrenheit
In most vehicles, the radiator fan is programmed to turn on when the engine coolant reaches a temperature between 200 and 230 degrees Fahrenheit (93 to 110 degrees Celsius).

Does the radiator fan run while idling?

Radiator cooling fans help to regulate engine temperature during specific situations. These include times when your car is moving slowly (below 25 mph) or when the engine is idling. The fans are, therefore, classified among the parts that make the engine cooling system.

How long does it take for radiator fan to turn on?

Turn the air conditioning to the maximum setting, this should spark the cooling fan to immediately come on. In older cars, this typically takes about 15-20 minutes for the engine to reach the right temperature. All you have to do is lift the engine hood and listen closely for the sound of the fan.

What temperature does a fan clutch engage?

about 170°F
Answer: Most fan clutches engage at about 170°F air temperature (about 180-190°F engine temperature). They reduce the temperature about 20°F before disengaging.

Should radiator fan turn on immediately?

It depends on the specific design of the car’s cooling system. In some cars, the radiator fan is designed to come on immediately when the car is started, while in other cars, the fan may only come on when the engine reaches a certain temperature or when the air conditioning is turned on.