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 is my radiator fan not turning 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.
Can low coolant cause fan to stay on?
Troubleshooting Tips If the fan turns off, that means the relay is at fault. Furthermore, check for low coolant levels and possible leaks that may be causing it. Usually, a low coolant will equate to a hotter engine. Therefore, it will activate the fan more often.
Is it bad for the engine fan to run constantly?
An electric fan SHOULD NOT run all the time. A mechanical fan WILL spin as long as the engine is running, but it will only ‘lock up’ when needed. Both radiator fans should always run when the coolant temperature sensor in the bottom tank of the radiator reaches about 212*F.
When does the engine fan turn on in a Toyota Corolla?
The Radiator Cooling Fan Relay (8) energizes when both the Engine Main Relay (7) is energized and the Engine Cooling Fan switch (10) is closed. The Radiator Cooling Fan Relay Contact (8) is normally closed, so when the Radiator Cooling Fan Relay (8) is energized, its contact is open.
Why is the radiator not working on my Toyota Corolla?
If everything else seems on the up and up, the springs in the fan clutch have worn past the point of proper function and can no longer do their job. There are many reasons why your Toyota Corolla’s radiator fan is not working. Of all the ones listed above, start with the coolant level, then check the fuse. After that, the order isn’t so important.
What was the problem with my 99 Toyota Corolla?
Background: ’99 Toyota Corolla (5 spd, 1.8L). A week ago, I suddenly notice the temp gauge was in the red. (Not pegged, but touching the red – it’s normally in the middle part of the range). I got it home, and the driver’s side electric fan wasn’t running. (passenger side fan was running).
What are the symptoms of a bad AC fan control module?
2. Cooling fans not running at all If the cooling fans are not coming on at all, then this may also be a sign that the fan control module is damaged. Without the cooling fans running properly, you will be at risk of having the car overheat. Running a car hot for a long period of time can lead to other damages like a blown head gasket. 3.