Does a car thermostat control the fan?
The fans are controlled either with a thermostatic switch or by the engine computer, and they turn on when the temperature of the coolant goes above a set point. They turn back off when the temperature drops below that point. Rear-wheel drive cars with longitudinal engines usually have engine-driven cooling fans.
What controls the cooling fan in a car?
On most modern cars, the cooling fan is controlled by the Engine Control Unit (ECU) which gets a signal from the coolant temperature sensor.
Does the temperature sensor control the fan?
The sensor works by measuring the temperature that’s being given off by the thermostat and/or the coolant itself. The temperature is then sent to the on-board control system. As the control system receives the temperature from the CTS, it may trigger the cooling fan to either shut off or turn on.
Should I run my thermostat on auto or fan?
Keeping your fan on AUTO is the most energy-efficient option. The fan only runs when the system is on and not continuously. There is better dehumidification in your home during the summer months. When your fan is set to AUTO, moisture from cold cooling coils can drip and be drained outside.
Does thermostat affect radiator fan?
Broken Thermostat Thermostats are known to go bad and cause all sorts of cooling issues. If this thermostat doesn’t open when the engine reaches the working temperature, the coolant will stay inside the engine block and the engine will start to overheat. This will result in the radiator fan not working.
Should the fan be on auto or on?
When should you turn your thermostat fan on?
The fan setting pulls air through the filter continuously, offering an effective way to clean the air if you’re suffering from poor indoor air quality. If you’re dusting, vacuuming, sweeping, or completing projects that release odors and particles into the air, consider turning on the fan setting while you work.
How do you test a thermostat switch on a car?
The thermostat switch can be tested easily after it has been removed from the vehicle. Testing requires only a few minutes and a few tools. Place a small sauce pan on the stove and fill it with one cup of water. Place the thermostat switch in the sauce with the terminals turned up.
How do I know if my thermostat switch is bad?
When the water reaches between 180 to 220 degrees Fahrenheit, the switch should turn on and the resistance seen by the ohmmeter should change to zero. If the resistance does not change to zero, then the switch is bad.
How do you hook up a thermostat to a saucepan?
Place the thermostat switch in the sauce with the terminals turned up. Place the thermometer in the sauce pan so you can read it as the temperature increases. Connect one of the ohmmeter probes to one of the thermostat terminals and connect the other probe to the second thermostat terminal.