weird backpressure "breathing" sound - Ford Powerstroke Diesel Forum
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  #1  
Old 11-18-2008, 03:16 PM
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Question weird backpressure "breathing" sound

please help!!!! have a weird back pressure breathing sound on my passenger side only when cold out and only if i dont plug in during the day at work. It actually sounds like the truck is taking a deep breath and when I throttle it the back pressure leaves through exhaust. I do have an intercooler set up could that be causing problem? All of my hoses are tight. In the morning after plugging in over night no weird breathing problem. It sounds like some thing is stuck. IT's driving me nuts!!!!!!! I also notice that a puff of smoke comes out with release of pressure. It usually happens aroun 1500 rpms. Like I said the breathing sound releases when Ithrottle it a little. Any ideas would be much appreciated. I know I am in excellent hands here. Thanks
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Old 11-18-2008, 03:19 PM
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its the exhaust back pressure device, the noise will go away when the operating temprature is met..
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Old 11-18-2008, 03:23 PM
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Does that mean my device is bad? thanks for the reply
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Old 11-18-2008, 03:26 PM
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No its doing what its suppose to do its the exhaust back pressure valve closing, I'm pretty sure it is suppose to warm the engine up faster so that it runs better.
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Old 11-18-2008, 03:28 PM
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Everything is fine, thats what it is supposted to do. Its really annoying if you ask me.
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Old 11-18-2008, 04:01 PM
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mine does the same thing just for a few seconds, but it stops on its own.
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Old 11-18-2008, 04:16 PM
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ever since i put stacks in it mine is always doing it unless i'm on the freeway
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Old 11-18-2008, 04:34 PM
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If you think the noise is excessive then you bedder go out and check the 10 mm bolt's on the turbo housing.
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Old 11-18-2008, 04:38 PM
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EBPV question

Look at picture in this thread You need to unplug the EPR censor and it will quit doing this.
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  #10  
Old 11-26-2008, 02:54 PM
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you were right on the money. unplugged it and hasn't done it since. thanks a sh*t load dude.
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