Fan turned on with ignition off

[Deadly BlaZe]

So i came home and turned the car off. I forgot to put my windows up, so i turned the key to the point before it cranks the car and i noticed my fan turned on (the passenger side one). It's the first time this happened and I don't think it's supposed to. Any ideas?

 

[MaxPSITalon]

i dont see a problem as long as it turns off (when the key is off). Mine does that sometimes too if it is hot outside.

 

[Deadly BlaZe]

i dont see a problem as long as it turns off (when the key is off). Mine does that sometimes too if it is hot outside.

Yea you're probably right. i just don't want it to lead to another problem.

 

[MaxPSITalon]

just out of curiosity... does the fan ever turn off?

 

[Deadly BlaZe]

just out of curiosity... does the fan ever turn off?

Yea it turned off after a few seconds while the key was turned.

 

[MaxPSITalon]

its all good dont worry about it.

 

[chicagoavenger]

I thought they stood on until it reaches a certain temp even when off?

 

[romeen]

I thought they stood on until it reaches a certain temp even when off?

No, there would be no point since the water pump is no longer circulating the coolant.

 

[1badTalon]

most of my father's cars' fans do that, and he never reacted to it negatively. My dad is also one of those guys that knows everything about everything about cars. Just don't ask him about wiring and electronics

 

[roadrunner2176]

The fan turning on and off is normal if you shut if off while still hot and turned the key on again. Temp sensors will still read the heat and kick the fan on. There should be a warning label on the fan shroud about this, something like CAUTION fan can turn on with or without engine running, but shouldnt kick on without key on.

Before you shut your car off, let it run for a minute or so to get some heat out of your engine. A turbo will trap heat inside the engine when not running.

 

[EclipseTrbo420A]

No, there would be no point since the water pump is no longer circulating the coolant.

yea but with the Key on the coolant temp sensor is still registering telling the fan it is to hot.

 

[Deadly BlaZe]

Thanks for the replies guys; makes sense now.