Ram 3500 6.7L whistle noise - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums

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post #1 of 3 Old 03-17-2012, 09:16 PM Thread Starter
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Ram 3500 6.7L whistle noise

Looking at buying a 2008 Ram 3500 Dually with a 6.7L. Upon acceleration and on applying engine brake, I can hear a whistling noise from under the hood, like an air leak.
This truck has been modified, DPF deleted and has a Edge tuner installed.
Does anyone know what would be causing the noise.
Any help would be appreciated.
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post #2 of 3 Old 03-20-2012, 06:24 PM
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Sounds like turbo whistle.
If it has an aftermarket air cleaner assembly, it's likely you hear the turbo whistling....mine whistles near all the time. The more I mash the accelerator pedal, the louder and more shrill the whistling gets then it changes tone and gets even more louder going uphill wide open.
Does this sound familiar to you?

'01.5 2500 4x4 Red QC Sport HO SWB, 6spd.,cowl hood, 4" ex., Edge Drag Comp, Banks boost & pyro pillar mount, single black Holley 140gph lift pump...13psi WOT, US Gage & 4 grease gun lines for fuel pressure monitor, 2% Biodiesel in the tank, Amsoil in the trans and Valvoline in the pan. Vulcan Big Line kit, Napa #2790 BHAF, cheapo fuel cooler, Jammer 100's, Cat C300 turbo 3.55 gears jes' like Ram3500Dually sez..., ARP studs,

Take time to turn so's you don't burn.
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post #3 of 3 Old 03-20-2012, 07:41 PM Thread Starter
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The air filter is stock. Actually, the first few miles it went just fine, but all of a sudden it started making a hissing noise upon acceleration or on engine brake.
Anyway I am not to concerned anymore. I called the guy back and it was sold. I guess I didn't make up my mind fast enough.
Thanks anyway.
I do have a 2008 Sterling Bullet cube truck with a 6.7L having 80,000 miles on it. Got it new and never put a penny on it. Great truck. That's why I'm looking in changing my dual wheel pickup. It's a Ford F350 1999 with a 7.3L. Injector problems, clutch problems, name it.
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