When to troubleshoot an electric car cooling fan?
On a warm engine, the fan may come on even if the engine is not running. When working on a hot engine or an engine that is running, keep your hands and tools away from the fan blades and moving components. Troubleshooting a cooling fan that doesn’t work can be a relatively straightforward task at times.
What are the signs of a bad cooling fan?
Common signs include the engine running hot and cooling fans either not functioning or running all the time. 1. Engine running hot 2. Cooling fans do not function 3. Cooling fans stay on at all times Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool.
Why is the radiator fan on my car not working?
When the thermostat in front of the engine detects that the engine reaches a dangerous temperature, the radiator then kicks in by releasing a mixture of water and coolant to quickly cool down the engine. There is a sensor on the bottom passenger side of the radiator. It does the job of taking notes of coolant temperature.
Why are my cooling fans running at all times?
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 are the cooling fans not working on my car?
1. Engine running hot 2. Cooling fans do not function 3. Cooling fans stay on at all times Average rating from 129,472 customers who received a Vehicle Engine Cooling Inspection. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool.
Can a bad fan relay cause an engine to overheat?
However, a bad cooling fan relay isn’t the only culprit for excessively high engine temperatures. Many other issues can cause the engine to run hot or overheat. Rather than uncommonly high engine temps, the driver may notice that the cooling fans have stopped running.
Can a failed radiator fan cause a car to overheat?
The most common symptom of a failed radiator fan is that the car is overheating on idle or at lower speeds because at higher speeds the car doesn’t need the use of the radiator fan. You should check if the radiator fan is spinning on full power when the thermostat is fully opened and the car engine is hot or while it’s overheating.
How to troubleshoot an electric cooling fan problem?
1.Has the Cooling Fan Actually Failed? 1 If the fan comes on when the AC is running at MAX, but doesn’t run when the engine is hot, check the temperature sensor… 2 If the fan fails to come on, first check for a fan blown fuse or triggered breaker. On older vehicle models, you may… More
What are the symptoms of a bad cooling fan relay?
1 Engine running hot One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. 2 Cooling fans do not function Non-functional cooling fans are another common symptom of a potential problem with the cooling fan relay. 3 Cooling fans stay on at all times
How can you tell if your car has a cooling problem?
Open the hood and locate the radiator cooling fan. This can be an electric fan or a mechanical fan driven by the engine. Step 2: Warm the engine. Start your vehicle and allow the engine to run until it begins to get hot. Step 3: Check the cooling fan. When the engine starts to get above the normal operating temperature, watch the cooling fan.
When do you know you have a cooling system problem?
When the engine starts to get above the normal operating temperature, watch the cooling fan. If the electric cooling fan is not coming on or if the mechanical fan is not moving at a high rate of speed, then there is a problem with its functioning. If you have a mechanical fan that is not functioning, the fan clutch must be replaced.
1. Engine running hot One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. If you notice that your engine is running at higher temperatures than normal, that may be a sign that the relay is not functioning properly.
What are the symptoms of a bad cooling motor?
As they are the component that rotates the fan blades and creates the air flow, any issues that eventually arise with the fan motors can quickly develop into other problems. Usually a bad or failing cooling fan motor will display a few symptoms that can alert the driver of a potential problem that should be serviced.
What are the symptoms of a bad radiator fan?
$0.00 1 Cooling fans do not come on The most common symptom of a faulty cooling fan motor are cooling fans that do not come on. 2 Vehicle overheating Another symptom of a possible problem with the cooling or radiator fan motors is the vehicle overheating. 3 Blown fuse
Many other issues can cause the engine to run hot or overheat. Rather than uncommonly high engine temps, the driver may notice that the cooling fans have stopped running. A faulty or broken relay cannot deliver power to the cooling fans. In turn, the unpowered fans won’t run, leaving the radiator to its own devices.
On a warm engine, the fan may come on even if the engine is not running. When working on a hot engine or an engine that is running, keep your hands and tools away from the fan blades and moving components. Troubleshooting a cooling fan that doesn’t work can be a relatively straightforward task at times.
What should temp be when cooling fan does not come on?
NOTE: if the cooling fan doesn’t come on when the engine has been operating for 20 minutes or more, make sure that coolant is reaching operating temperature, around 220°F (104°C). You may be dealing with a stuck-open thermostat.
Why does the radiator fan come on when the car is not running?
On some modern vehicles, an ambient air temperature sensor, vehicle speed sensor, and other sensors may provide input to the car computer to determine radiator fan operation. Consult your vehicle repair manual to check the required sensors and switches. On a warm engine, the fan may come on even if the engine is not running.
How does the coolant sensor work on a Mercedes Benz W124?
There are two coolant temperature sensors on the W124. The single pin sensor sends its signal to the temperature gauge in the dash while the two-pin (or in some cases four-pin) sensor sends its signal to the fuel injection management system. Let the car cool so you don’t have to work around a hot engine.
Why does my radiator fan run full speed when I start the car?
Immediately upon starting the car, the radiator fan begins to run full speed, even though the car is stone cold. The AC is OFF. The radiator and condenser are BRAND NEW. This problem existed before and after the radiator was replaced. The fan continues to run at its maxiumum speed, regardless of the engine temperature.
Where are the cooling fans on a car?
The cooling fans are mounted on the radiator and work to pull air through the radiator fans to keep the engine cool, especially during idle and low speeds, where air flow through the radiator is significantly less than at road speeds.
Can a car fan still run after the engine is turned off?
Then you notice the engine cooling fan is still running even though the car is turned off. It is ok for the engine cooling fan to keep running for a few minutes after turning off the car. Your car fan will run for a few minutes after you turn off the car then turn off. This is normal in many vehicles, such as BMW or Mercedes-Benz.
What happens if the fan on my radiator fails?
The most common symptom of a faulty cooling fan motor are cooling fans that do not come on. If the cooling fan motors burn out or fail, the cooling fans will be disabled. The cooling fan motors work together with the cooling fan blades to pull air through the radiator. If the motor fails the blades will not be able to spin or generate air flow.
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.
The cooling fans are mounted on the radiator and work to pull air through the radiator fans to keep the engine cool, especially during idle and low speeds, where air flow through the radiator is significantly less than at road speeds.
What kind of fan does 2006 Columbia C13 Cat use?
2006 Columbia C13 Cat. Enjine fan runs continuously, not letting 2006 Columbia C13 Cat. Enjine fan runs continuously, not letting the motor warm up. We replaced the thermostat and water temp. sensor. Doesn’t … read more
When to turn off electric fan in Wildcat?
Unless I missed it, you didn’t mention the operation of the electric fan. The fan should kick on at 205 deg. F and turns off at 195 deg. F. Check the fuse if the fan is not operating (in fuse box under the driver’s seat). Many of the folks have gone to a resetting circuit breaker instead of the fuse.
Is it normal for a car fan to run when the engine is off?
This is entirely normal. As missileman explained, the fans are removing excess heat from the engine’s cooling system. Some cars allow the fan to run after the key has been removed, some cars don’t. I like the ones that allow the fan to run.
Why does my Chevy Equinox fan keep running?
I have a 2013 Chevy equinox trying to figure out why fan stays on after card is off when playing reverse chugs out 33 people found this helpful. 2012 Chevy equinox base model. 4 cylinder. Radiator fan won’t shut off. Need to manually unplug from under the hood