05 6.0L making very high pitched noise..help? - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 10-04-2008, 02:49 PM Thread Starter
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05 6.0L making very high pitched noise..help?

The noise seems to occur when accelerating or when the turbo is over about 10LBS. The second I back off of the throttle even a small amount, the noise goes away and I have not noticed a loss in power. I was towing my tractor the other day in "haul" mode on the tranny and the noise didn't occur nearly as much.

There have been no mods to the engine and I have around 105,000 miles on it. Any suggestions will be appreciated as budget isn't allowing a trip to the local dealer right now.
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post #2 of 7 Old 10-04-2008, 04:01 PM
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Run your hand around all the CAC/boost boots and feel for damage. It sounds a lot like you have a hole in one or maybe one is loose. That will make a high pitched noise.


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post #3 of 7 Old 10-04-2008, 04:44 PM
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Had a cracked Y-Pipe once and it made that noise under acceleration

2011 6.7 F350 - Dads
2009 6.4 F350 - Brothers
2007 6.0 F350 - Mine
1997 7.3 F250 - Farm Truck

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post #4 of 7 Old 10-04-2008, 05:18 PM
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Mine had a hole in the boot that connects to the turbo outlet. It was on the bottom....I bought the truck with that stupid hole in hose problem..then I drove with it for a month or so before I realized that it wasn't normal!!!!
It sure was loud! I thought that was how those trucks sounded!!!

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post #5 of 7 Old 10-04-2008, 07:13 PM Thread Starter
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Thanks guys. Where is this boot located? I'm not a technical idiot, but I've never fooled with a turbo before through the 4 strokers that I've owned.
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post #6 of 7 Old 10-04-2008, 07:20 PM
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sounds like a cracked flex section in the up pipe..could possibly be the y pipe..the egr flex section is the one that seems to crack more often..

crank the truck..set parking brake and have someone rev the engine while laying under the passenger side near the turbo down pipe..if the pipe is cracked you will see soot around the flex section and upon revving you will see smoke come out..

i know i suggested laying under a running truck..please be an adult and be responsible while doing so.

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First Coast Diesel Performance


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post #7 of 7 Old 10-04-2008, 08:25 PM
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Just looks for all the pipes running to the intake elbow from the intercooler and the pipes running from the turbo to the other side of the intercooler. There are rubber looking boots that attach them together. They are usually blue. It almost has to be that or a crack in the exhaust feeding the turbo like Abrannan said.


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