How long does a car fan run after you turn off the engine?
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. The radiator fan may run up to five minutes and sometimes longer. Unless there is an electrical issue, it may stay on all the time until it drains the battery.
What should I do if my radiator fan stops working?
Turn the air conditioning to the maximum setting – this should spark the cooling fan to immediately come on. In older cars, this typically takes about 15-20 minutes for the engine to reach the right temperature. If there’s a problem with the engine’s temperature, then this can damage the radiator.
Why do you need a radiator fan in a car?
The job of the radiator is to keep the coolant at the right temperature so that when it travels back to the engine, it is able to take on more heat, and prevent the engine from getting too hot. A radiator fan is imperative in keeping the temperature of the coolant low enough.
Why does the radiator fan spin when the engine starts?
The fan belt is responsible for deriving power from the engine to transmit to the radiator fan. When the engine starts, the radiator fan starts spinning due to the power from the fan belt. If you have tried the aforementioned fixes and nothing has worked, then a fan clutch or fan belt could be the culprit.
Why are the fans running even when the engine is offline?
Conversely, the cooling fans may keep running even when the engine is offline. This odd behavior indicates a different issue in the relay that controls the fans. An electrical short in the relay can lock the armature in its open position permanently.
When to turn on the cooling fan relay?
The cooling fan relay is an electromagnetic switch that controls the power supply to the engine’s cooling fans. It ensures that the energy-intensive devices only run when needed, usually when the vehicle is immobile. When the engine temperature approaches unsafe levels, the vehicle’s computer or temperature switch turns on the cooling fan relay.
Why are the cooling fans not working on my car?
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.
Why does my car run so hot at rest?
The issue may stem from a malfunctioning cooling fan relay. Further, the heat issues often become noticeable when the vehicle is at rest. 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.
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. The radiator fan may run up to five minutes and sometimes longer. Unless there is an electrical issue, it may stay on all the time until it drains the battery.
How long does a Mini Cooper fan run?
The system is operating as designed. 1. When the engine coolant temperature reaches 108 degrees Celsius (due to heat soak), the cooling fan will activate until the coolant temperature drops below 105 degrees Celsius. During this period, the fan has a maximum run time of 900 seconds (15 minutes) due to power management.
When does the car cooling fan come on?
The cooling fan comes on when I start the car and stays on for 5 minutes after I turn it off. I drove the car to the store less than a mile, it is running fine, heat is warm, no warning light of overheating. The cooling fan just stays on.
Why is my cooling fan not working on my Volvo?
Diagnosing volvo cooling fan issues. Airflow speed through a radiator is a major influence on the heat it loses. Vehicle speed affects this, in rough proportion to the engine effort, thus giving crude self-regulatory feedback. Where an additional volvo cooling fan is driven by the engine, this also tracks engine speed similarly.
Why does the cooling fan have to go on when the engine is off?
During a regen the DPF heats up to 800C. This is why the fan must go on whether the car is running or not. Don’t try to stop it by turning off the car and then back on, this only defeats the purpose. Let the car do what it does as this is how the computer is programmed. All is well in CTD land.
When do you turn on the low speed radiator fan?
12 people found this helpful. When your ac is on your low speed on the radiator fan should be running. Since it is not the high side pressures go extremely high. When the computer sees these extreme pressures it turns the high speed on to the radiator fan bringing the pressures down to normal.
Is it bad to have a cooling fan running?
The fan helps keep the wiring and electronic junk from holding the maximum amount of heat. It can’t hurt to have the fan run for a while unless you have an old battery, but that’s easy to fix. badbearing July 6, 2016, 1:30am #11 percolation? The fan stops cooling the radiator and the water pump quits pumping water. Yes.