Loud noise - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 01-24-2013, 12:23 PM Thread Starter
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Loud noise

My 97 powerstroke makes a loud nose through the exhaust like air is bring forced out really fast when the truck is colder then it comes out of it at high rpms is this normal? What is the reason for this? I love in nd so it gets pretty cold here and when my truck is at normal temp 180 or so eot it does not do this but around 110 it will

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1997 F250
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post #2 of 12 Old 01-24-2013, 12:31 PM
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http://youtu.be/BAAU-Tl0iSI
This? OBS has them too....

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post #3 of 12 Old 01-24-2013, 12:40 PM
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Originally Posted by 97Strokin' View Post
My 97 powerstroke makes a loud nose through the exhaust like air is bring forced out really fast when the truck is colder then it comes out of it at high rpms is this normal? What is the reason for this? I love in nd so it gets pretty cold here and when my truck is at normal temp 180 or so eot it does not do this but around 110 it will

"Strokin"
How loud are you talking? Loud like air out of a compressor line? How about an exhaust leak at a gasket that expands and seals itself up when it's warm?
- Bill
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post #4 of 12 Old 01-24-2013, 12:51 PM Thread Starter
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Re: Loud noise

I thought it was ebpv also but the obs does not idle up like the new style does the valve shut to warm the block and cause the excess air flow it does come from the exhaust tip so I do not think its leaking

"Strokin"

1997 F250
3" DP"
4" exhaust
5" Tip
TS 6 Position
17" AR Rims
4" lift
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post #5 of 12 Old 01-24-2013, 12:53 PM
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Does it sound like a 747 coming in for a landing when your inside the plane? This sounds like the ebpv is closed

-Kris-
2000 excursion V10 2wd 230k
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Dp tuner infinity, exhaust, intake, chipped, tricked, and wrecked


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post #6 of 12 Old 01-24-2013, 12:57 PM
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Does it sound like a 747 coming in for a landing when your inside the plane? This sounds like the ebpv is closed
thats what I was attemting to refer to...

and just cause it dont idle up dont mean it's no closing...my E99 does it once i start driving too

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post #7 of 12 Old 01-24-2013, 01:04 PM Thread Starter
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Re: Loud noise

Ya it does sounds like a jet I figured it was the ebpv but wanted to make sure I don't wreck anything thanks a lot

"Strokin"

1997 F250
3" DP"
4" exhaust
5" Tip
TS 6 Position
17" AR Rims
4" lift
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post #8 of 12 Old 01-24-2013, 07:21 PM Thread Starter
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Re: Loud noise

When does the ebpv usually quit closing?

"Strokin"

1997 F250
3" DP"
4" exhaust
5" Tip
TS 6 Position
17" AR Rims
4" lift
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post #9 of 12 Old 01-24-2013, 07:34 PM
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When does the ebpv usually quit closing?

"Strokin"
When the truck gets up to temp. I hated it when I had my 97. So I gutted it. Took a little longer to warm up, but the noise was gone!

2006 F350 CCLB KR FX4

stock...
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post #10 of 12 Old 01-24-2013, 07:45 PM
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Cuts off when your PCM feels the eot is up enough

-Kris-
2000 excursion V10 2wd 230k
2000 Excursion 7.3 4x4 246k
1995 CCLB DRW 324K
2001 CCLB DRW 319K
Dp tuner infinity, exhaust, intake, chipped, tricked, and wrecked


Quote:
Originally Posted by marine5811
The stock downpipe in an OBS is flat because I'm a ginger.
Quote:
Originally Posted by alberta 7.3
Finding a decent woman is like shopping for a used truck. You spend most of your time picking through the money pits, wrecks, and basket cases until you find one that you can tolerate
Quote:
Originally Posted by JJFLASH
Well at least you caught the loose bolts before they cause any damage. Nothing worse than a sloppy hole
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