The most common reasons a radiator fan is not working are luckily due to a blown fuse, bad relay, or a broken wire. It can also be caused by a faulty coolant temp sensor, low coolant level or the fan itself can be damaged.
What happens if car fan stops working?
If there’s a voltage from the fan to the relay, the chances are that the fan may be faulty and needs to be replaced. The sensor reads the system’s temperature and determines when to turn the fan on. If it isn’t functioning properly, chances are that the fan won’t turn on, and the vehicle may overheat as a result.
How do I know if my cooling fan relay is bad?
Bad Cooling Fan Relay Symptoms
- 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.
Will a bad thermostat cause the fan not to work?
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.
Will a car overheat without a fan?
Yes, technically your engine does not need a cooling fan to operate. If the radiator does not have cool air blowing on it constantly, it will overheat eventually, so you’d need the perfect combination of weather and traffic to drive effectively without a radiator fan.
Can you drive with a broken fan?
Yes, technically your engine does not need a cooling fan to operate. As such, you should never drive your vehicle if the cooling fan isn’t working even though you can.
How much does a fan relay cost?
The average for Cooling Fan Relay is $478
| Repair Type | Zip | Cost |
|---|---|---|
| Cooling Fan Relay | 13045 | $373 |
| Cooling Fan Relay | 78452 | $464 |
| Cooling Fan Relay | 23359 | $596 |
Where is the fan relay located?
The cooling fan control module in your vehicle is located at the front left of the engine compartment next to the radiator.
Can I drive car if radiator fan is not working?
As such, you should never drive your vehicle if the cooling fan isn’t working even though you can. If the radiator does not have cool air blowing on it constantly, it will overheat eventually, so you’d need the perfect combination of weather and traffic to drive effectively without a radiator fan.
Does the Toyota Sienna Le have air conditioning?
Thanks for your reply, the car is toyota sienna LE, 2006, Auto. It does have AC which works while the car is moving, if i am in traffic and not moving the AC does not work, clear sign the fans are not working.
How to tell if fan relay is working properly?
Fan relay – working fine 3. Fuses – look fine 2. Fan motors- work fine (connected them directly to power source) 3. Replaced the control module (attached to the radiator) 4. Checked the temperature switch with ohm meter – seems to be fine, resistance changes with temperature changes.
How do I Disconnect the fan module from the ECM?
The red/yellow (pin 2) wire routes to the ECM on connector 3 (ECM behind the glovebox and has 5 connectors going to it). Disconnect connector 3 on the ECM and then disconnect the fan module connector as well.
