What would cause the cooling fan to run after the car is shut off even when the car is not hot?

When the engine is running, the coolant circulates and flows to the radiator, where heat is dissipated. When the engine is turned off, the coolant doesn't circulate, and the heat stays trapped, therefore prolonging the engine from cooling. Running cooling fans help cool down the engine even after you turn off the car.

1. Why does my car cooling fan keep running?
2. Why won't my cooling fan shut off?
3. What causes an engine to keep running after turned off?
4. Where is the radiator cooling fan switch located?
5. Which relay is for radiator fan?
6. Where is the relay for cooling fan?
7. What does it mean when your car won't shut off?
8. How do I know if my radiator fan motor is bad?
9. Does the coolant temp sensor control the fan?
10. Can a bad thermostat cause radiator fan not to work?

Why does my car cooling fan keep running?

3. Cooling fans stay on at all times. If the cooling fans are staying on at all times, this is another (less common) symptom of a possible problem with the cooling fan relay. If the relay shorts internally, it may cause power to be permanently switched on, which will cause the fans to run at all times.

Why won't my cooling fan shut off?

The most common reason that your Air Conditioner fan won't turn off is because a stuck relay keeping the circuit closed. ... Double-check the thermostat and make sure the fan is not set to ON, and that it still runs when switching it to AUTO or OFF (if your thermostat has an OFF setting).

What causes an engine to keep running after turned off?

Answer: After the engine is shut off, its temperature rises. This excessive heat and pressure in the combustion chamber is what causes detonation, which ignites the residual fuel-air mixture in there.

Where is the radiator cooling fan switch located?

The cooling fan switch should be located near the thermostat housing on the left side of the engine, behind the distributor assembly.

Which relay is for radiator fan?

The cooling fan relay is normally located in either the underhood fuse and relay center or mounted to the electric fan assembly behind the radiator.

Where is the relay for cooling fan?

The fan relay is usually located near the bottom of the engine compartment on a metal frame member. The metal acts as a heat sink to keep the fan relay cool. So, unplug the connector at the relay and repeat the check for power. If you get power, you've got a bum relay.

What does it mean when your car won't shut off?

If the engine continues to run just as before you turned it off - as if you hadn't turned it off at all - your ignition and fuel system are not shutting down. In that case, your car has an electrical problem that needs to be addressed. Either your ignition switch element or a power relay needs to be replaced.

How do I know if my radiator fan motor is bad?

The most common symptom that the radiator fan has gone bad is that it will stop working. Sometimes the motor burns up or fails. Other times, the relay stops working. Either way, you know there is an issue with the fan system if it is unable to run.

Does the coolant temp sensor control the 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. If it's not working, the fan won't turn on when it needs to, which means the engine might overheat.

Can a bad thermostat cause radiator 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.