Very high pitch sound durring acceleration - Ford Powerstroke Diesel Forum
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post #1 of 18 Old 01-01-2012, 07:11 AM Thread Starter
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Very high pitch sound durring acceleration

Ok I wouldnt say this is a huge problem, jus anoying as heck! At just about any speed when the foot is lightly and moderately on the pedal through the middle of the dash I get this just above light sound that sounds like my fathers hearing aid going off. Ive looked @ hoses anything that looks loose and Im not seeing anything.Happens when radio is off/on vents off/on just alittle anoying. any thoughts?

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post #2 of 18 Old 01-01-2012, 05:31 PM
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Turbo whine ????
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post #3 of 18 Old 01-01-2012, 05:36 PM
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Does it sound electric or air related

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post #4 of 18 Old 01-01-2012, 05:49 PM Thread Starter
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I realy can't say, I would lean toward mechanical but being like a hearing aid sound it almost sounds electrical. Maybe the elect throtle? But I only here it at the dash. Could it be the tubes/ couplings @ the turbo?

2015 F-350 Platnum FX4 Superduty 4X4 6.7L crew cab Longbed 3.55's 5th wheel prep

Old truck's 95' 7.3 LB EXT 4X4 285,000 miles very much Missed! 08' F-250 6.4 fully deleted

Lots of mods to come

Quote:The right of the people to bear arms shall not be infringed.
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post #5 of 18 Old 01-01-2012, 06:13 PM
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I'd say turbo whine
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post #6 of 18 Old 01-01-2012, 06:28 PM Thread Starter
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Now is that turbo whine normal? Or is their something wrong? This is the first I heard this.

2015 F-350 Platnum FX4 Superduty 4X4 6.7L crew cab Longbed 3.55's 5th wheel prep

Old truck's 95' 7.3 LB EXT 4X4 285,000 miles very much Missed! 08' F-250 6.4 fully deleted

Lots of mods to come

Quote:The right of the people to bear arms shall not be infringed.
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post #7 of 18 Old 01-01-2012, 07:08 PM
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Is your truck tuned or anything. How loud is it? I had a noise in mine that was a high pitched whistle, had a leak in my up pipe, replaced the clamps and it was gone
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post #8 of 18 Old 01-02-2012, 05:15 AM Thread Starter
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No its all stock, I thought up pipe, is that pipe obvious to see? Underneath or on top of motor? Im new to 6.4's I know 7.3's real good though!

2015 F-350 Platnum FX4 Superduty 4X4 6.7L crew cab Longbed 3.55's 5th wheel prep

Old truck's 95' 7.3 LB EXT 4X4 285,000 miles very much Missed! 08' F-250 6.4 fully deleted

Lots of mods to come

Quote:The right of the people to bear arms shall not be infringed.
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post #9 of 18 Old 01-02-2012, 06:03 AM
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No its all stock, I thought up pipe, is that pipe obvious to see? Underneath or on top of motor? Im new to 6.4's I know 7.3's real good though!
I would like to know too so I can check mine!
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post #10 of 18 Old 01-02-2012, 06:32 AM
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I am no expert but my 08 did that and the dealer did a cab off repair on the cross pipes on rear of motor, they have like braided sections on them that leak at accelleration and let -off at a little higher rpm's. They also told me the fix was bullet proof but after about a year and a half they are whistling again!!
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