Clutch fan working?
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
If your truck sounds like it's trying to suck the grill in through the rad. Engine off and cold the fan should easily turn by hand, it may not spin if you give it a flick but it should turn without much effort.
Postmaster
Joined: Nov 2011
Posts: 3,533
Likes: 17
From: SW Florida
Well, after sitting for several hours you should hear the fan moving plenty of air at startup til you get the RPM's off idle for a few moments. This is because the clutch fluid has settled out of place and is partially locking the fan up.
Then you'll hear it less and less as it starts to freewheel while you drive and the fluid settles into place. Once the engine is up to temperature and the 'stat opens you should be able to let the truck idle with the a/c on without overheating. When you rev it up again you should hear the fan pulling air again, if it's working right.
Then you'll hear it less and less as it starts to freewheel while you drive and the fluid settles into place. Once the engine is up to temperature and the 'stat opens you should be able to let the truck idle with the a/c on without overheating. When you rev it up again you should hear the fan pulling air again, if it's working right.
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