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Old 01-10-2011, 10:32 AM   #1 (permalink)
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cooling fan problem 2010 6.7

They replaced the fan unit once because it didn't shut off but it still runs . It doesn't matter where the controls are set . On heater only or any other settings. I know it should run when you have it on defost or ac. Anyone else having trouble? Tim
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Old 01-10-2011, 01:17 PM   #2 (permalink)
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Im going to look at mine this evening as I swear its always on when the key is in. It can be 30 degrees out first start and fan will come on.
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Old 01-10-2011, 02:39 PM   #3 (permalink)
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What fan are you talking about, the engine cooling fan or the HVAC fan?
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Old 01-10-2011, 02:54 PM   #4 (permalink)
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I think he meant HVAC fan, not cooling fan(engine).
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Old 01-10-2011, 05:47 PM   #5 (permalink)
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What fan are you talking about, the engine cooling fan or the HVAC fan?
engine cooling fan
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Old 01-10-2011, 05:52 PM   #6 (permalink)
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Are you saying that it is on when you first start the truck? Or when you have the key in the on position with the truck off?
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Old 01-10-2011, 05:55 PM   #7 (permalink)
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If it's the mechanical / engine driven fan under the hood...it's always going to spin, somewhat. It's friction in the system.
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Old 01-10-2011, 05:57 PM   #8 (permalink)
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they are saying the fan clutch is engaged as soon as they turn the truck on
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Old 01-10-2011, 07:22 PM   #9 (permalink)
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If it's the mechanical / engine driven fan under the hood...it's always going to spin, somewhat. It's friction in the system.
I know the difference if the engine fan is on or not .I operate 7 class 8 trucks. when you open the hood with the truck at a fast idle and it blows your hair back , its on.
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Old 01-10-2011, 07:40 PM   #10 (permalink)
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I know the difference if the engine fan is on or not .I operate 7 class 8 trucks. when you open the hood with the truck at a fast idle and it blows your hair back , its on.
That is great I used to own five class 8's myself, but that is irrelevant here. A dodge is not a Peterbilt.

When it comes to trouble shooting you got to start somewhere. That is the reason for the basic Q&A. Sorry if your offended, but I really had a hard time understanding what you asked in your first post.
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