I searched for radiator fan in search section but did not find anything.

In my accord radiator fan stays ON for few minutes even after I turned off the car. Is it very normal or I should check something to figure the problem. Temperature guage shows OK temp(no hot indicator), Radiator fluid level is alsoOK.Thanks in advance for any help.

 

when the car is a little warm it's normal for the fan to stay on for a few minutes afterwards, if it never goes off and drains the battery then you have a sensor issue

 

does that only happen with older hondas or 7th gen too.

 

That 'feature' disappeared beginning in 1998. I've never known our 2003 to run the fan after shutdown, but I haven't (yet) looked at that circuit in my Helm book.

 

was it a good feature to have or is it that our newer cars don t have the need for it

 

Good feature? I don't know. Seems like a source of failure for many cars.

Maybe the size & configuration of the radiator made it unneccary on later cars?

The 7th-gen cooling system is a lot different than earlier ones, for example the location of the thermostat down low in front.

 

My understanding of the reason for the keyswitch off cooling fan was to mitigate "heat soak" of the cylinder head. When a fully warmed engine is turned off the heat and coolant temperature increases above operating temp (195F). At 225F, thermoswitch B contacts close and enable the cooling fan (I thought both, but maybe only one) to allow convective coolant flow to bring the coolant and head temperature down. This is supposed to protect the head gasket from excess movement and failure.

I've only noticed this occuring in hot summer conditions after a good highway run. If it occurs w/ everyday short trip driving, you may have a problem w/ thermostat or radiator.

good luck

 

interesting

 

Yeah, heat soak would be the reason for the feature to begin with. Most cars did something similar. I can only guess why Honda dropped it in '98.

It seems to be purposefully dropped, because shorting the one remaining fan switch will NOT run the fan if the key is turned off.

 

yeah but does honda have another way to release heat other than that?