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Author Topic: Duramax diesel whining at 1800 rpm  (Read 1080 times)

Howard Kelly

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Duramax diesel whining at 1800 rpm
« on: October 07, 2017, 09:32:53 PM »
 Every once in a while my Chevy silverado duramax diesel  whines when accelerating past 1800 rpm.   no rhyme or reason to it may go a few days without the whine happening then it happens again.
 Think it might be the turbo....  the garage I deal with could not find the cause even  though they had the truck for 3 days. Of course it did not happen very often when they had it in their shop. ???
Any idea what causes it.
Howard Kelly, Sherry Bryon, and our furry creatures Foxy the dog and Ringo the cat
Comox B.C.  Vancouver Island Canada
2008 Chevy Silverado 1500
 26 ft 2012 Coleman TT
Always looking for SUNSHINE
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SargeW

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Re: Duramax diesel whining at 1800 rpm
« Reply #1 on: October 08, 2017, 08:28:48 AM »
Are we talking like a turbo whine? I experienced that when I changed out the stock air filter on a Cummins that I had to a high flow air filter.  It didn't last long, I went back to stock pretty quick. 
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QZ

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Re: Duramax diesel whining at 1800 rpm
« Reply #2 on: October 08, 2017, 09:09:52 AM »
It may be the  viscous fluid fan clutch.
« Last Edit: October 08, 2017, 09:12:09 AM by QZ »

Howard Kelly

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Re: Duramax diesel whining at 1800 rpm
« Reply #3 on: October 09, 2017, 09:24:20 PM »
Thanks for the input, will get it checked
Howard Kelly, Sherry Bryon, and our furry creatures Foxy the dog and Ringo the cat
Comox B.C.  Vancouver Island Canada
2008 Chevy Silverado 1500
 26 ft 2012 Coleman TT
Always looking for SUNSHINE
Life is short, dance like no one is watching

Robert K

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Re: Duramax diesel whining at 1800 rpm
« Reply #4 on: October 10, 2017, 03:33:28 AM »
Their is a sensor that is on the top of the turbo,it rides on the shaft .Mine would make an intermitten noise /whine.
Bob&Sandy
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GA_Boy

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Re: Duramax diesel whining at 1800 rpm
« Reply #5 on: November 07, 2017, 06:40:45 PM »
It may be the  viscous fluid fan clutch.
My thoughts also.  Had one once and it drove me crazy before I found out what it was.
Marvin

lavarock1210

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Re: Duramax diesel whining at 1800 rpm
« Reply #6 on: November 08, 2017, 09:09:16 AM »
Keep track of the engine temperature when you hear the whine.  If it is always the same I would also suspect the viscous fluid fan clutch.

BobX2

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Re: Duramax diesel whining at 1800 rpm
« Reply #7 on: November 08, 2017, 01:19:11 PM »
When the fan clutch is engaged, it is more of a roar, nothing at all like a whine. Nothing intermittent about it. Every cold start or hot run with a heavy load will engage it. I doubt the clutch is the issue here.
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gwcowgill

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Re: Duramax diesel whining at 1800 rpm
« Reply #8 on: November 08, 2017, 02:15:08 PM »
I am wondering if what you are hearing is an alternator whining or maybe a idler pully making noise.
2009 Bounder 36B, 2014 Honda CR-V, various grandchildren when school is out. KG4LHS
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Howard Kelly

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Re: Duramax diesel whining at 1800 rpm
« Reply #9 on: November 10, 2017, 02:41:48 AM »
Thanks for all your ideas.
 turns out it was the  power steering pump, had it replaced , glad the pump did not stop when I was pulling the rig.
Howard
Howard Kelly, Sherry Bryon, and our furry creatures Foxy the dog and Ringo the cat
Comox B.C.  Vancouver Island Canada
2008 Chevy Silverado 1500
 26 ft 2012 Coleman TT
Always looking for SUNSHINE
Life is short, dance like no one is watching

lavarock1210

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Re: Duramax diesel whining at 1800 rpm
« Reply #10 on: November 10, 2017, 08:56:29 AM »
Thanks for all your ideas.
 turns out it was the  power steering pump, had it replaced , glad the pump did not stop when I was pulling the rig.
Howard

Thank You for the update on how the problem was solved.

So often the problem is solved and the OP never posts how it was solved.

Howard Kelly

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Re: Duramax diesel whining at 1800 rpm
« Reply #11 on: November 10, 2017, 10:54:09 PM »
Thanks, Not knowing that is one of my frustrations as well.
Howard Kelly, Sherry Bryon, and our furry creatures Foxy the dog and Ringo the cat
Comox B.C.  Vancouver Island Canada
2008 Chevy Silverado 1500
 26 ft 2012 Coleman TT
Always looking for SUNSHINE
Life is short, dance like no one is watching

steveblonde

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Re: Duramax diesel whining at 1800 rpm
« Reply #12 on: November 13, 2017, 07:54:14 AM »
Ty for the update GM just recalled the 2014s and up because of faulty power steering pumps too
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