The sensor
works by measuring the temperature that's being given off by the thermostat and/or the coolant itself
. … As the control system receives the temperature from the CTS, it may trigger the cooling fan to either shut off or turn on.
How do you know your fan sensor is bad?
- The engine runs hot or overheats. …
- The cooling fans don't work. …
- The cooling fans keep running. …
- Warning lights. …
- Poor air conditioning performance. …
- Swapping Relays. …
- Measuring the Relay Coil's Resistance. …
- Listening for Noises.
Where is the cooling fan sensor?
The cooling fan control module in your vehicle is located
at the front left of the engine compartment next to the radiator
.
What is a cooling fan sensor?
The cooling fan relay is
the relay that controls the engine's cooling fans
. When the correct parameters are met, a temperature switch or the computer will activate the relay, which will allow power to the fans.
How much is a cooling fan sensor?
To get your cooling fan relay replaced, you will pay, on average,
$80-$160
, depending on the type of car you have and the mechanic's fees. The labor should cost around $70, while parts should run you $10-$50.
Should radiator fan turn on when AC is on?
Both radiator fans should always run when the AC compressor is engaged. To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature. Most fans should come on when the coolant reaches
about 200 to 230 degrees
.
What sensor controls the radiator fan?
On most modern cars, the cooling fan is controlled by
the Engine Control Unit (ECU)
which gets a signal from the coolant temperature sensor.
What causes a fan to stop working?
Poor ventilation can cause dust and heat to get trapped inside the case of the motor
. This can cause your fan to stop functioning—especially if your fan has an overheating feature that causes it to automatically shut off if it gets too hot.
When should the radiator fan kick on?
Your radiator fan should kick in at
about 200 degrees Fahrenheit
. If you notice your vehicle is overheating or at the very least running hotter than it normally does, listen for the fan to see if you can hear it.
How do you test a fan switch?
Turn on the burner and slowly
increase the water temperature
. The ohmeter should be turned on and have a reading of high resistance. 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.
Does the coolant temp 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.
Why does my radiator fan not turn off?
Pull the cooling fan relay out of the box
. Replace the cooling fan relay with a new one. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off. The computer looses power with the key off and the same applies to the coolant temperature sensor.
How do I know if my radiator fan fuse is bad?
- Engine Overheating. When the radiator fan isn't functioning properly, it is not able to adequately cool down the car's engine. …
- Air Conditioner Function Diminished. …
- Loud Noise Coming From Radiator Fan.
How much is a temperature control sensor?
The average price for an engine temperature sensor replacement is
between $150 and $193
. Labor costs are between $82 and $105 while parts are between $66 and $88.
Where is the temperature sensor located?
It is most often located
close to the thermostat of the cooling system or inside of it
. The cooling system is located beneath the air intake pipe and behind the right cylinder.
How much does it cost to fix a cooling fan?
The average cost for a replacement fan is
between $634 and $789
. Labor costs are between $102 and $130 while parts are between $532 and $659.
