Is it normal for a car fan to run after the engine is turned off?
It’s “normal” for a thermostatically controlled fan to run after the engine is switched off – in fact it may even start running a short time after switch off, as the residual heat in the engine transfers to the coolant. But from your description it seems like the fan might be running all the time, if it starts up when the engine starts.
Why does the coolant fan run when the engine is shut down?
This behaviour is by design. The coolant fan will run when the coolant exceeds a certain temperature irrespective of if the engine is running or not. Some vehicles even have supplementary electric water pumps set to run after engine shut down to keep coolant circulating.
Why does the radiator fan run all the time?
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. When the engine is running, the coolant circulates from the engine and flows to the radiator, where heat is dissipated.
Can a VW Jetta fan run after the engine is shut off?
Definitely hold on to the info. The fan can run after the engine shuts off, but I’ve read about failures where the fan keeps running until the battery is dead. A sticking relay or switch, can jar itself loose while driving. But if it sticks once, it will likely do it again.
Why does fan run after the ignition is turned off?
The manual addresses this, saying, ” The electrical fan in the engine compartment could turn on for a few minutes after the ignition is switched from ON to OFF, whether or not the A/C is on or off, to cool the engine compartment quickly.” As crazy as this might sound to a new car owner, modern headlights make noise.
What can fan run after the car is shut 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. The radiator fan may run up to five minutes and sometimes longer.
Why does AC keep running after engine is turned off?
Having your air conditioner continue to run after you’ve turned it off is an issue that you’ll more than likely be able to resolve by utilizing the information here. The cause of this problem can be the result of a number of possible issues including extreme temperatures, a broken thermostat, a faulty relay switch , or even a damaged short circuit .
Should you turn air conditioner off before shutting engine off?
They believe that in order to protect and preserve the engine, it is better to turn off the air conditioner before stopping the car engine and to turn it on after the next ignition, rather than turning the engine and the A/C on and off at the same time.
Why does my Mazda Hatch run on high?
It’s possible that it’s a thermostat, or just old coolant. A flush would help, but as you said, it’s a beater. If it’s running fine, I wouldn’t sweat it. Runs great just always runs that fan after its warmed up. My 2.0 08 hatch is normal at a stand still in comparison.
Why does the engine fan run on high?
If the engine is warmed up, and the car is idle, then there won’t be any fresh air being blown in by the movement, so the fan will run harder to keep it cool. It’s possible that it’s a thermostat, or just old coolant. A flush would help, but as you said, it’s a beater.
What kind of engine does a Mazda6 have?
I have a 2007 Mazda6 with the 3.0L V6 that I have owned since new. This (extraordinarily hot) summer I noticed for the first time that the radiator fan runs for 5-10 seconds after I turn the car off, even with the keys out of the ignition.
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.
How often does a car cooling fan stay on?
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.
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 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.
What was the problem with my Mazda 6?
Turns out this is a very common problem with all first generation Mazda 6 cars: The Fan Control Module (FCM) has a high failure rate. I replaced my FCM and it solved this problem.
Is it bad to run a fan at high current?
First make sure the fans themselves are not bad: They should spin freely by hand. If they do not, or if they draw more than 10A when running, then their bearings or motors are bad and that high current alone can fry the FCM.