The cooling fan switch should be located
near the thermostat housing on the left side of the engine
, behind the distributor assembly.
Where is the cooling fan sensor located?
The Engine Coolant Temperature Sensor can be located in a few places, depending on the vehicle and its manufacturer. 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
.
Where is the radiator cooling fan switch located?
Locate the cooling fan switch
near the thermostat housing on the left side of engine behind the distributor assembly
. The switch wire colors should be green and black. Disconnect the wire terminal at the fan switch. Allow the engine to reach a coolant temperature of 196-203°F (91-95°C).
What are the symptoms of a faulty cooling fan switch?
- 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.
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.
What happens when the coolant temperature sensor goes bad?
If the coolant temperature sensor goes bad it can
send a false signal to the computer and throw off the fuel and timing calculations
. It is not uncommon for the coolant temperature sensor to fail and send a permanently cold signal to the computer. … This will reduce fuel economy, and may hinder engine performance.
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 happens if the radiator fan stops working?
What happens if the cooling fan stops working? If your cooling fan stops working,
your engine could overheat
. This could cause damage to your engine parts. It's a serious issue and needs to be looked at by a garage.
What are the symptoms of a bad thermostat?
- Leakage from the mounting surface. Appearance: Seepage, drips or large coolant bleed marks on or around the mounting surface or on the housing. …
- Rust and corrosion. Appearance: Rust and corrosion on the surfaces of the thermostat. …
- Deposit build-up. …
- Map-controlled thermostats.
How do you diagnose a bad cooling fan?
- Cooling fans do not come on. The most common symptom of a faulty cooling fan motor are cooling fans that do not come on. …
- Vehicle overheating. Another symptom of a possible problem with the cooling or radiator fan motors is the vehicle overheating. …
- Blown fuse.
Can you drive with a faulty coolant temperature sensor?
It is possible to drive a vehicle
with a faulty coolant temperature sensor as the management system defaults to a static reading. A vehicle's coolant sensor is a critical component used by the engine management system. It directly affects, cooling and fueling of the engine and therefore affects how the engine performs.
How do you know if the coolant temperature sensor is bad?
- Poor Fuel Economy. …
- Irregular Temperature Readings. …
- Black Smoke from Your Exhaust. …
- Your Engine is Overheating. …
- Your Check Engine Light is On.
What tells the cooling fan to come on?
The engine temperature should trigger the fan to turn on
. It will also turn the fan off once the engine has cooled to under 200 degrees. You may have heard of a part called the radiator fan switch or temperature fan switch. This is linked to a thermostat and works much like your home's HVAC system.
How do you check a temperature sensor?
- How to test a faulty thermocouple or resistance thermometer?
- Check if the -ve and +ve leads swapped.
- Check for any thermocouple cable wiring issues.
- Check for local heat source issues.
- Check Temperature Transmitter Settings.
- Check temperature controller settings.
- Troubleshooting temperature sensors with a multimeter.
