Radiator fan
#1
Radiator fan
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.
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.
#6
RE: Radiator fan
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.
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.
#7
RE: Radiator fan
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
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
#9
RE: Radiator fan
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.
It seems to be purposefully dropped, because shorting the one remaining fan switch will NOT run the fan if the key is turned off.