S2000, fan come on full speed when ignition on

[zelar]

Doesnt matter cold or hot, both a/c and radiator fans come on full speed when ignition on, does anyone knows anything about it? thanks

[ECU-MAN]

I would star with checking the fan relays under the engine bay, more so the signal that turns them on.


you really would want to have a workshop manual to do your testing with.

[zelar]

thanks again ecu man, i got it fixed, some body earth the fan circuit on fuse box to make it come on fully when ignition on~

[ECU-MAN]

probably because the thermo fan sensor isnt working

[zhong]

^^ ghetto ways to keep the bay cool for ze track I say! I'd let it idle on the driveway for about 5 minutes to see whether it kicks in or not, it eventually does just wait for it for peace of mind.