06-10-2021, 11:11 AM
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Member
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Join Date: Jun 2015
Location: Racine, WI
Posts: 10,817
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Quote:
Originally Posted by guntherrex
Ok, still annoyed by the wooshing noise while driving, I decided to look a bit further into the clutch fan. With the car off it moves freely, with a good damping. Seems ok. Then I started the car (cold), the fan should be easy to stop from what I see on youtube... guess what: that's not stopping unless you do some serious damage (or turn the car off of course)
The funny thing is that usually when driving away with a cold engine when I get up to speed the noise drops at around 2500/3000rpm and the car sounds great. so that seems the fluid returns as normal and the clutch function actually works for a while. When the car gets hot again the fan gets loud, which I suppose is a good thing.
What worries me is that I don't know if this fan is properly capped at 2500rpm, because I can hear the pitch go up after that RPM range. This is a new fan that was installed after the old one grenaded and messed up the engine bay.
My feeling is I should replace the clutch fan again...
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If the clutch locks up at high RPM, the blades will come off the fan and destroy anything in their path. You definitely want to replace the clutch.
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2011 E70 • N55 (me)
2012 E70 • N63 (wife)
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