Strange Whine, BAD???? - Ford Powerstroke Diesel Forum
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post #1 of 10 Old 12-10-2007, 01:07 PM Thread Starter
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Strange Whine, BAD????

Driving around today I floored it to get on the freeway and I heard this loud whine that almost resembles the sound of a supercharger. It gets progressively louder at high rpm and im not sure if its real or in my mind but it seems to have lost some power. I have a 2001 Automatic F250. It just started this today. ANy help?

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post #2 of 10 Old 12-10-2007, 01:41 PM
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may want to inspect all the intercooler boots , its very possible one is split, does the noise only happen under accell

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post #3 of 10 Old 12-10-2007, 01:50 PM Thread Starter
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yes. would that effect the boost pressure? I watched that just to see and it didnt look like it was loosing boost. However, I glanced down at my speedo when I was accelerating and I saw the speed drop about 2 mph and then continued to accelerate.

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post #4 of 10 Old 12-13-2007, 08:20 PM
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I had an intercooler boot blow on my big truck and the sound that it made was a big rush of air. When my turbo started going out on my pick up it made a whine/wizzing sound. The bearings were going out on the shaft so the turbo fins were rubbing on the case. Take off tubes going into the turbo and see if you can move the shaft on the turbo. there will be a little play but not much. You might also see marks on the case where it may have rubbed.
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post #5 of 10 Old 12-16-2007, 11:27 PM
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did you find out what it was. mine just started to wine to but i am not loosing any boost
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post #6 of 10 Old 12-17-2007, 03:08 AM
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I have also noticed a whine in the last month or so that keeps getting louder, my turbo used to have a high pitch whistle now it has a lower pitched and loud whine but I still get 30 psi boost. Whine seems to start around 10-12 psi and get louder as boost increases, seems to be independent of rpm but directly dependent on psi.

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post #7 of 10 Old 12-17-2007, 06:31 AM
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When mine started the whining/whizzing sound I pulled the turbo and this is what I found in the exhaust side



It may be time to pull it and inspect the turbo before it is too late and you get stranded in the middle of Nowhere, USA.

And yes, it still made 30psi+ but the sound would get louder with the more boost it made. When I pulled it I could also push it towards the exhaust side and it woudl scrape the turbine housing, lateral thrust, like it is pushing a bunch of boost. Go Figure.....

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post #8 of 10 Old 12-19-2007, 10:21 AM
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i have not pulled the turbo yet but that is what i feared that it was out dose any one know what is a good turbo to put back on it i have been thinking ballbaring type
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post #9 of 10 Old 12-19-2007, 10:46 AM
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Quote:
Originally Posted by tstroke View Post
i have not pulled the turbo yet but that is what i feared that it was out dose any one know what is a good turbo to put back on it i have been thinking ballbaring type

Tell us about your truck so we can give correct advice

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post #10 of 10 Old 12-22-2007, 06:03 AM
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Check the fluid level in the power steering pump. It will whine if it's very low on fluid.

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