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  #1  
Old 03-23-2011, 12:43 PM
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my hemi takes along time to warm up,about 15 mins before it blows warm air living in canada thats along time. i was thinking of adding a hotter t-stat but i noticed my clutch fan grabs less than 1 minute after starting and runs fairly constant.this will obviosly keep it running cooler and possibly lowering gas milage.anything i can look at to troubleshoot why it comes on when its cold.
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Old 03-23-2011, 08:32 PM
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Has your check engine light come on . If the computer sees that the engine has a problem getting to temp in a predetermined amount of time it will turn the light on . You could have a failing thermostat . When was the last time it had a good cooling system service ?
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Old 03-24-2011, 05:24 PM
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has 114,000km on vehicle no cooling system service yet.was waiting a bit coolant should be ok till 120,000km -150,000km.but the way my 5.7 chev clutch fan worked is clutch fan has copper or other alloy type spring grabber in it that when it heats up grabs shaft and engages (mechanical not electric) figured hemi should be same . so clutch fan should not grab shaft and start turning until it reaches certain temp (mechanical not electrical) but grabs pretty much read away after starting (within 1 minute of starting)my other clutch fans chev/ford grab after warm up 5-15mins not red away.when vehicle is off i can turn fan by hand (free spinning)
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Old 03-24-2011, 05:33 PM
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o yah no engine lights have ever come on except low wash so i just started washing her down low around her rear diiferential then moved my way up along her t case then on to her trans cover,cleaned up her oil pan then along her front differential all seamed pretty clean down low.then noticed i was out of the blue stuff under her hood topped her up and havnt had any engine lights since.but she still not warming up to me as fast as i want.
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Old 03-24-2011, 07:52 PM
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I wouldn't worry about it until your motor starts showing you that you are having an issue. Unless you are sure you just want a bigger fan to be cooler?
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Old 03-26-2011, 08:24 PM
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my basic point of my thread was my truck takes too long to warm up. iwas going to change t-stat but noticed clutch fan coming on early.therfore causing to stay cool b4 warming up.
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Old 03-26-2011, 10:17 PM
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I don't think the fan operation has anything to do with that. Any extra cooling you get from the fan, will only affect the cooling efficiency of the radiator, and that doesn't come into play until the thermostat opens.

Tom suggested the possibility of a failing t-stat....I believe he is pointing in the right direction.
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Old 03-27-2011, 12:17 PM
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Quote:
Originally Posted by charlieb View Post
my basic point of my thread was my truck takes too long to warm up. iwas going to change t-stat but noticed clutch fan coming on early.therfore causing to stay cool b4 warming up.
Changing the stat won't make the truck warm up any faster, it will only change the normal operating temp. Converting to a thermostatically controlled electric fan system might make some difference but I can tell you from my own personal experience that when I added a clutch fan to my electric only system, I didn't see a decrease in warm up times.
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Old 03-27-2011, 09:05 PM
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thanks ramtech just thought 15 mins warming to full temp was kinda long(thought clutch fan turning on right away had something to do with it) just gonna not worry about it and where my parka and long johns.
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Old 03-28-2011, 08:59 AM
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Originally Posted by charlieb View Post
thanks ramtech just thought 15 mins warming to full temp was kinda long(thought clutch fan turning on right away had something to do with it) just gonna not worry about it and where my parka and long johns.
Just sitting and idling, that sounds about right to me. For driving down the road it would be a bit excessive unless the ambient temp is between bitter and OMG!
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