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Fan Clutch Won't Disengage


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Yesterday I replaced the Water Pump and Fan Clutch on my '05 4.7. At idle, everything sounds fine. When driving ...


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Old 01-07-2017, 03:29 AM   #1 (permalink)
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Join Date: Jan 2017
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Ram Year: 2005
Engine: 4.7 Magnum
Default Fan Clutch Won't Disengage
Yesterday I replaced the Water Pump and Fan Clutch on my '05 4.7.

At idle, everything sounds fine. When driving it's a different story. When the engine hits >2500 RPMs, sounds like I'm in the cockpit of a C-130. There is loss of power, and fan speed seems to be dependent on engine RPM, regardless of the gear or temperature. New Fan Clutch is stiff while cold.

What steps do I need to take to correct this issue?


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Old 01-07-2017, 04:53 PM   #2 (permalink)
 
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Ram Year: 2003
Engine: 4.7 Magnum V8 NOW with Moose Power
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Originally Posted by Blue_Smoke13 View Post
Yesterday I replaced the Water Pump and Fan Clutch on my '05 4.7.

At idle, everything sounds fine. When driving it's a different story. When the engine hits >2500 RPMs, sounds like I'm in the cockpit of a C-130. There is loss of power, and fan speed seems to be dependent on engine RPM, regardless of the gear or temperature. New Fan Clutch is stiff while cold.

What steps do I need to take to correct this issue?
Might be a bad fan clutch....

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Old 01-08-2017, 03:22 AM   #3 (permalink)
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I pulled the fan Assembly off, and the jet in my driveway disappeared.

New felt a little stiffer than the old, not a huge difference. I think the thermostat on the fan wasn't engaging. Swapped the new one out for old and returned it.

Problem solved for now, I guess.
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