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 Post subject: turbo sound - oil on blades
PostPosted: Mon Jun 20, 2011 9:15 am 
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Location: Nashville, TN
Been hearing another sound (possibly from the turbo). It sounds just a little deeper than the normal turbo whine. I'm assuming it's coming from the turbo but not 100% sure. If i'm in park and rev up, I do not hear it. Only when driving...

I took off the hose to the turbo and did the impeller test. Very minimal movement and the blades moved freely.

Also, there is oil on the blades...wondering if a line is clogged, anyone have this issue?

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Last edited by changingtime on Mon Jun 20, 2011 1:17 pm, edited 1 time in total.

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 Post subject: Re: turbo sound?
PostPosted: Mon Jun 20, 2011 12:29 pm 
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Joined: Fri Jun 22, 2007 11:43 am
Posts: 4962
Location: Green Cove Springs FL
If you ask 10 different people, you will get 10 different descriptions of what a turbo is supposed to
sound like.

When I stopped listening to the radio during my morning commute, I noticed what sounded like a
gear "whine." I thought my transmission pump or something else in the drive train was about to take
a dump.
Nope.
That was the sound of the turbo performing normally.

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 Post subject: Re: turbo sound?
PostPosted: Mon Jun 20, 2011 12:37 pm 
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Location: Tallahassee, Florida
Mine sort of whistles first thing at lower speeds but either the sound goes away or my ears ignore it after about 1 mile. Been the same since I got the CRD 14,000 miles ago.

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 Post subject: Re: turbo sound?
PostPosted: Mon Jun 20, 2011 2:38 pm 
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Location: Pasadena CA
papaindigo wrote:
Mine sort of whistles first thing at lower speeds but either the sound goes away or my ears ignore it after about 1 mile. Been the same since I got the CRD 14,000 miles ago.


Sounds exactly like my condition except that was 70,000 miles ago. Had 20K on it then, 90k now, still a whistle in the AM that goes away when the engine is warm. Of course, it could just be my ears :lol:


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 Post subject: Re: turbo sound - oil on blades
PostPosted: Mon Jun 20, 2011 3:11 pm 
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Joined: Mon May 02, 2011 12:37 am
Posts: 493
Location: Houston, tx
Mine also produce a winding noice but it dimishes as engine warms up, also, i can hear it when I do jack rabit take offs but only for a couple of seconds.
I had some oil at the turbine but went away with the provent filter, now everything is oil free at the turbo and air intake.


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 Post subject: Re: turbo sound - oil on blades
PostPosted: Tue Jun 21, 2011 12:38 am 
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Location: Somewhere between Heaven and Hell... But it is really hot here on Earth...
Oil on the blades is from the stupid CCV. Do an EHM and that problem will be solved for good, along with the problem of the intake hose and boost hoses rotting out from the oil contamination.

If you haven't already lost the intake hose, it is probably very weak from the oil which has a nasty habit of eating right through the rubber at the turbo inlet.

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