Fan sounds like a jet engine

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Fan sounds like a jet engine

Postby Farmboy » Thu May 01, 2014 9:27 am

Over the past week or so as the truck gets to the higher RPMs, the fan is really LOUD.. loud enough I can hear it over the exhaust. It has never sounded like that before. Is the fan clutch froze up? or is my water pump going out and what I am hearing is the vibration???

Embarresed to say I haven't even popped the hood and grab the fan to see if there is any slop or not...
1990 W350 4X4 NOW INTERCOOLED 5-speed. Boost/Pyro. Few light tweaks to the pump. Now a dually with an aluminum flatbed!!
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Re: Fan sounds like a jet engine

Postby DodgeFreak » Thu May 01, 2014 9:37 am

I'd guess its the clutch froze up. I see it all the time on the Ih 466s and We've had it happen to 2 of our cummins.
92 D350 Cab and Chassis. Auto stock, wiring gremlins. 330k miles
92 W250 Ext cab rotted completely out. Auto, pump maxed, 215 ppump nozzles, Denny T2 pin.
85 D350 single wheel, converted to cummins, getrag, turned up 2 turns and afc screw flush.
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Re: Fan sounds like a jet engine

Postby lheise88 » Thu May 01, 2014 10:17 am

Definitely your fan clutch is froze up. Easy fix and not expensive
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Re: Fan sounds like a jet engine

Postby Farmboy » Thu May 01, 2014 2:16 pm

is it going to hurt anything if I keep driving it until I get time to fix it... it is like 12th on the list right now.
1990 W350 4X4 NOW INTERCOOLED 5-speed. Boost/Pyro. Few light tweaks to the pump. Now a dually with an aluminum flatbed!!
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Re: Fan sounds like a jet engine

Postby lheise88 » Thu May 01, 2014 4:43 pm

Just take longer to warm up and is annoyingly loud.
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Re: Fan sounds like a jet engine

Postby BC847 » Thu May 01, 2014 4:45 pm

It'll impact the mpg as well.
David

1993 12mm VE Fueled W250 CC, Green
12.67 @ 103.35
Your basic farm truck ;)
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Re: Fan sounds like a jet engine

Postby Farmboy » Fri May 02, 2014 5:00 am

Ok.. I can deal with that for a few weeks...

Thanks for your help
1990 W350 4X4 NOW INTERCOOLED 5-speed. Boost/Pyro. Few light tweaks to the pump. Now a dually with an aluminum flatbed!!
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Farmboy
14mm rotor
 
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Location: Between the corn fields of Ohio
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