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whats that noise?

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Old Jun 8, 2006 | 05:20 PM
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superhooperduty's Avatar
superhooperduty
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From: airdrie canada
whats that noise?

I have a 05 f350 srw supercab superduty, with the 6.0. Last weekend while pulling a trailer (approx 7000lbs) at 60 to 65mph, i heard a kinda of quite noise, sounded like a electric cooling fan turning on, oil pressure ok, boost did vary, all temps stayed normal, at first i thought fans on but when i let of the diesel, as the rpms dropped so did the loise, it did it 3 times that weekend,while driving, when i started it up one morning, i thought i heard a growel about 1-2 sec long,but have to admit i may be mistaken on this as someone was opening up doors on the trailer. any thoughts, have driven it this week and no unusual noises or symptons at all.
 
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Old Jun 8, 2006 | 06:01 PM
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006f350diesel's Avatar
006f350diesel
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From: ontario, canada
its was your cooling fan that you most likely heard. its startled me too the first time i heard mine like that
 
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Old Jun 11, 2006 | 07:30 PM
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superhooperduty
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From: airdrie canada
whats that noise?

Originally Posted by 006f350diesel
its was your cooling fan that you most likely heard. its startled me too the first time i heard mine like that
Just checked under the hood, it looks like i have a clutch fan not an electrical cooling fan, besides if it was a electrical fan it shouldn't vary the noise as i let off the diesel.
 
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Old Jun 11, 2006 | 08:37 PM
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daveshan
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From: Durango, CO
Originally Posted by superhooperduty
Just checked under the hood, it looks like i have a clutch fan not an electrical cooling fan, besides if it was a electrical fan it shouldn't vary the noise as i let off the diesel.
It's the fan, it seems the fan is a very complicated clutch type and the sound does vary with engine speed. I got to hear it on a grade this week pulling a car trailer and a bit of a load in the bed, ~5500 lbs but it was in the AZ desert at 100º+ If I hadn't already found a thread on fans I would have passed a brick, it is an impressive sound.
Dave
'06 SC/SB PSD
 
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