Quote:
Originally Posted by sptt
It is same with A/C on or off. Before I start the car for the day the fan has a good bit of resistance when you try to spin it. After it runs hot and I turn engine off, if I try to spin it, it is a little stiffer but you can still turn it no problem. It doesn't spin easily but it is not fully engaging. I read online that some Viscous Clutch Fans should not be able to turn after engine runs hot and is turned off as they should turn with the engine until cooled down to a certain temperature.
Also...just thought of something. I had my engine replaced. I noticed that the bearing bracket sits closer to the engine than my older engine and bearing bracket (pulleys still line up fine) but could it be that I have the wrong style fan or clutch for the replacement engine?
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Since it does it A/C off, I'm betting its your VFC too.
The best way to check -- engine COLD (check in morning).
Spin VFC by hand; if it spins more than 1/3rd of a turn its done.
Reason? Fluid inside is super thick at room temp like honey is, so it SHOULD be tough to turn. If its easy and spins, fluid is no longer inside the clutch, or enough has leaked out its not engaging by itself.
My FC didn't work on 260E, did the check and sure enough it spun about 3/4 of a turn. New one goes about 1/5th.
Either way though, you should hear it roar as temps increase. They are reasonably loud when engaged.
A new Febi VFC is ~$120, and installation is relatively simple with the right tool to lock it. Info here on this DIY:
http://www.w124-zone.com/articles.php?article_id=18