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  #1  
Old 01-21-2008, 01:20 PM
The Screwy HEUI
 

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SHUSH!!!!

Usually when it's cold, I'll let my truck idle for about 15-20 mins. When I get into it, the temp. needle is just about in the inside of the normal range. Now, when I take off I notice @ about 1/4 throttle, or letting off the throttle after take-off, I hear a "shushing" sound until the temp. needle reaches normal operating range. If I let off the throttle completely, I can't hear it. It seems to only occur when you have a tiny bit of foot on the throttle then, like I said, when it hits normal temp:GONE. I don't see any decrease in the rig's performance. No sputtering or hesitation @ take-off. And today I checked it up and down(engine, exhaust, and turbo) and I have no loose hardware, no leaks, no evidence of anything. In all my years working on PSD's, I've never encountered this problem. It definitely sounds like the turbo is making the noise, but is it just because it's cold? Has anyone else heard of such? Am I loosing it? Does anyone have a Kit-Kat(I'm hungry)?
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  #2  
Old 01-21-2008, 01:27 PM
Desert Shield/Storm Vet

 

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Its probobly your exhaust back pressure valve.
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Old 01-21-2008, 01:31 PM
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+1 on the EBPV.
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Old 01-21-2008, 03:01 PM
The Screwy HEUI
 

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Thanks a lot, guys! Tommorow's another day. I'll have a look @ it!
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  #5  
Old 01-21-2008, 03:03 PM
Desert Shield/Storm Vet

 

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Yeah it might be sticking a bit, but usually it will come on till the engine is warmed up as thats what its designed to do
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  #6  
Old 01-21-2008, 03:04 PM
The Screwy HEUI
 

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P.s.- I've got a habit of checking out rigs of people who either answer my questions or just drop a line in any of my threads...Nice rides, my bad brothers!
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  #7  
Old 01-21-2008, 03:08 PM
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mine also does that figured it was the ebpv but it is nice to know
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  #8  
Old 01-21-2008, 03:12 PM
Desert Shield/Storm Vet

 

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Quote:
Originally Posted by heavymetalf-250 View Post
P.s.- I've got a habit of checking out rigs of people who either answer my questions or just drop a line in any of my threads...Nice rides, my bad brothers!
Thanks yours aint too shabby either
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Old 01-21-2008, 03:41 PM
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My old truck seemed to sound the same only sometimes i heard it thoo.
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  #10  
Old 01-21-2008, 03:48 PM
Desert Shield/Storm Vet

 

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Yeah mine was annoying the heck out me so I got rid of it. Mine was sticking closed and I lost power, mileage, and the hiss drove me nuts
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