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Old 10-03-2003, 05:41 PM
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Is it normal that fan rotates freely (300D Turbo 82)

This may be too basic to ask, and shows that I've only had the car for a week, but


Is it normal that the main fan (mechanical) rotates freely in a 300D turbo when the car is parked??


Last edited by Judge; 10-04-2003 at 12:53 AM.
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Old 10-03-2003, 05:59 PM
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Normal, because thermal clutch is not engaged.
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Old 10-04-2003, 12:53 AM
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Instead of finding more broken things I 'm happy to find something works some complex way because of good enginering.

Thanks for the good news.
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Old 10-04-2003, 11:38 AM
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It should rotate, but not what I'd call "freely". The fan is bolted to a pretty big fan "clutch" that is in turn rotated by a fan belt.

The fan clutch is supposed to allow some slippage when the engine is at normal temperature, and then start "locking up" when the engine gets hotter.

So, on your car, you should see approximately the following behavior. Grab the fan carefully and give it a good spin attempt, being careful not to cut yourself or bend a blade. Just a reasonable spin, not excessive or anything. The fan should stop within one turn or less.

If it just spins freely then your fan clutch has gone bad and will never lock up when your car needs it the most.

Not a cheap part either. But its something you can probably do without over the winter in a cool climate.

Ken300D

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