fan operates on cold start up ? - Ford Powerstroke Diesel Forum
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Old 11-11-2012, 07:16 AM
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fan operates on cold start up ?

Truck has sat for 7-10 days and when I got in to start this morning the Fan was on for about a mile or two before it shut off.

is this normal ?
It was mid 40's this morning and we know how these trucks run until they get up to operating temperature.

It's happened before but I really noticed it this morning.
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Old 11-11-2012, 08:01 AM
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This is normal the computer will engage the fan to full yield, it actually puts a bit of a load on the wngine to attempt to help warm up faster
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Old 11-11-2012, 02:34 PM
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That's normal.
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Old 11-11-2012, 03:19 PM
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Now, on 7.3s (viscous clutch), there was a TSB for this called "morning sluggishness" or something to that effect. A 6.0 clutch is electric only right?
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Old 11-11-2012, 04:11 PM
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Quote:
Originally Posted by jesilvas View Post
Now, on 7.3s (viscous clutch), there was a TSB for this called "morning sluggishness" or something to that effect. A 6.0 clutch is electric only right?
The 6.0 has the same kinda fan clutch.



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Old 11-11-2012, 05:50 PM
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Originally Posted by Lilpooh View Post
The 6.0 has the same kinda fan clutch.

6.0 powerstroke fan - YouTube


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So it's the same issue? Thick fluid in the clutch, then it warms up and disengages?
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Old 11-11-2012, 06:57 PM
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Originally Posted by jesilvas View Post
So it's the same issue? Thick fluid in the clutch, then it warms up and disengages?
Can't say for certain, this is where the truck owner needs to troubleshoot issues. On post #36, you can find fan testing.

Time for a new fan clutch


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