is my fan engine driven

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mx5moore
E30 Zone Newbie
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Joined: Tue May 19, 2009 11:00 pm

Mon Jun 08, 2009 12:11 am

I have just put a deposit on a e30.
im new to these so please help me .
is my radiotor fan engine driven as ave been told.
as ive notised the fan stayes on all the time the engine is running.
the car is a 318 1990 with 110k
thanks
kieran
beemerbird
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Mon Jun 08, 2009 12:12 am

Sounds normal to me.....
If it ain't broke, fix it till it is
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Brianmoooore
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Mon Jun 08, 2009 12:16 am

The fan is driven directly from the engine, but there is a temperature activated 'clutch' between them.
Under normal conditions, the fan turns, but is just "freewheeling". When the radiator temperature rises to near the engine working temperature, the 'clutch' engages and the fan speeds up.
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kevin316i
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Mon Jun 08, 2009 12:17 am

The E30 has a mechanical fan, it is designed not to run all the time by using a clutch which grips and causes the fan to rotate when temperature rises. Main problem with mechanical fan is that the clutch leaks and stops working as it should, resulting in engine temp rising in hot conditions, e.g. when in slow moving/stationary traffic.
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kevin316i
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Mon Jun 08, 2009 12:18 am

Brian, you beat me to it by seconds :wink:
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mx5moore
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Mon Jun 08, 2009 3:02 pm

thanks, thats set my mind at ease. :)
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