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Possibly a foolish question, but should the Jimny engine cooling fan (the big one on the back of the radiator) spin all the time? Or just when the engine is hot and needs cooling? Mine seems to spin all the time, even when the engine has just been started from cold. On my other car, the fans only kick in when coolant temp reaches 85C...
Seems it spins under engine power until about 3,000 RPM, then freewheels. Bit of an odd design! Why not save the effort of spinning the fan until it's needed?!
Seems it spins under engine power until about 3,000 RPM, then freewheels. Bit of an odd design! Why not save the effort of spinning the fan until it's needed?!
Are we talking viscous fan here, the sort that slightly freewheels until the heat builds up then it's clutch system locks it on and it spins at engine speed to cool?????
From looking on here, it does seem to be a viscous coupled fan, yes. But it spins when the engine spins, until the engine gets to about 3,000 RPM, when there really isn't any need for the fan to spin any more (not efficient and in theory no need for cooling at that sort of engine / road speed), so it basically freewheels. I think! Anyone care to explain better?!
Sandspider wrote: From looking on here, it does seem to be a viscous coupled fan, yes. But it spins when the engine spins, until the engine gets to about 3,000 RPM, when there really isn't any need for the fan to spin any more (not efficient and in theory no need for cooling at that sort of engine / road speed), so it basically freewheels. I think! Anyone care to explain better?!
For me, I like a fan to work all the time and cool everything all the time.lol
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