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Why is my clutch fan fully engaged at cold start

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Old Jul 7, 2011 | 10:21 PM
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Default Why is my clutch fan fully engaged at cold start

Every morning I leave for work and start down the road I can hear my clutch fan at full force. Sounds like a jet taking off lol. At the same time it shifts out of second the first time it quiets down. 200 feet down from my drive way i have to stop again. As i start off again and i can't hear it as bad but its still engaged. Half mile i have to stop again and i don't hear it at all when i take off. It has been doing this for a while now and its really bothering me ha. Why is it engaged when the engine is barely over outside temps? The thing is i don't hear it at all when the engine temp is normal or at least its not as loud as it is during the mornings. I have tried showering it with some Kano Kroil (some Bad A stuff) thinking maybe it gets froze up from heat and doesnt disengage but it still does it. Maybe its just trying to tell me i should get a electric fan lol. All jokes aside what could be causing this?? Thanks
 
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Old Jul 7, 2011 | 10:30 PM
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Sounds like the clutch has failed. Are you in Southwest Mississippi? Your morning temps are probably pretty high. It may be deciding some cooling is needed when it really isn't.

The fan is not reading the engine temperature, it's reading the temperature of the air through the radiator.

Can you turn the fan by hand in the morning?
 
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Old Jul 7, 2011 | 10:37 PM
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The fluid in the clutch hasn't distributed and is pooled in one spot, thus keeping it engaged until it does. They're all like that. Maybe it's going bad, to check, hand turn it and if t doesn't move, it is seized up. If it spins more than a couple blades, it's shot. Other than that it is in perfect working condition.
 
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Old Jul 7, 2011 | 10:52 PM
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Yes i am. Its usually in the 70's around 630.
I did move it when i was spraying it with the oil and i didnt notice that it wasn't hard to turn or anything. I will recheck in the morning and pay closer attention to it.
 
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Old Jul 7, 2011 | 11:00 PM
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from what i can remember i can spin it and it stops. There is a slight resistance to it. i will check on this in the morning too.
 
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Old Jul 7, 2011 | 11:02 PM
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"Not hard to turn" would be a failure that should not make it wind up on start up. The silicone is intended to let the fan free-wheel until the air through the radiator heats up enough to make it grip the water pump shaft.

I'm officially confused.
 
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Old Jul 7, 2011 | 11:52 PM
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Mike i'm sorry, i thought you meant turn the fan by hand as in just casually turning the fan and not spinning it.. Forgive me, I'm horrible at explaining things
Ok I just went outside and tried it. When i spin the fan it spins maybe a quarter turn then stops and that should be normal. Right? Its still pretty warm around the fan.
 
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Old Jul 8, 2011 | 12:27 AM
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Yes I'd call that normal, it will stay engaged until the silicone gets evenly distributed within the clutch, and it will release until it heats up enough to engage again. Mine always was disengaged by 3rd gear. I removed mine completely over the winter and haven't had problems with over heating yet, even with a good 102 degree day.
 
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Old Jul 8, 2011 | 07:02 AM
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Does sound normal. I had occasion to visit the local dealer recently. They'd left one of the new Rams unlocked, so I was snooping around under the hood. I tried the fan (they're plastic now) and it spun almost a full turn after being pushed.

Maybe it is time for an e-fan. I love mine. I was recently towing a trailer in hot north Florida traffic and the gauge stayed just under 1/2. The fan was roaring away and all was well.
 
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Old Jul 8, 2011 | 02:57 PM
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It's normal. Mine has done that since new.
 
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