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6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super-Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

       
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Old 11-06-2009, 09:11 AM   #1 (permalink)
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Cooling fan

With the hood up, I can see the cooling fan spinning on cold start ups and it spins constantly I think. The heat/ac is off. It's not spinning very fast and roaring like it does on hot days under heavy load or with the AC on. Is this normal? Thanks, Dave
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2006 F250 6.0 (2005 engine build date), white XL regular cab, 6 spd manual, towing package, gooseneck hitch, long bed, 63,000 miles, FX4, spray in bed liner, BFG's, mudflaps, precision fit bench seatcover, superduty floor mats, sirius CD player, stock except for a silly K and N filter from the previous owner.

1985 Terry Taurus 23'
1967 Avion c-10 slide-in camper

Service since 32,000 miles
1 EGR valve
1 Fuel pump
1 Ball joint
1 one anti-lock brake sensor
2 Cam position sensor leaks
1 Transfer case leak
1 power steering fluid seep from a hose
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Old 11-12-2009, 07:16 PM   #2 (permalink)
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found the answer burried in another thread

Quote:
Originally Posted by AutoJim View Post
The fan always *turns*, but the fan drive only engages when needed. On warm/hot days with the AC on, it'll engage (at least partially) at stoplights, and when the light changes and you pull away, there's a bit of "flare" that makes some noise until the fan drive can pump out.

Normal stuff. You try to make a 26" fan with a roughly 3" pitch quiet above 1500 rpm or so, without compromising airflow. If you can, let me know and I'll put you in touch with the supplier, who will probably pay you for the patent rights...
sweet
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2006 F250 6.0 (2005 engine build date), white XL regular cab, 6 spd manual, towing package, gooseneck hitch, long bed, 63,000 miles, FX4, spray in bed liner, BFG's, mudflaps, precision fit bench seatcover, superduty floor mats, sirius CD player, stock except for a silly K and N filter from the previous owner.

1985 Terry Taurus 23'
1967 Avion c-10 slide-in camper

Service since 32,000 miles
1 EGR valve
1 Fuel pump
1 Ball joint
1 one anti-lock brake sensor
2 Cam position sensor leaks
1 Transfer case leak
1 power steering fluid seep from a hose
dmausel is offline  
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