2018 6.7 Fluttering noise with throttle? - Diesel Forum - TheDieselStop.com
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post #1 of 5 (permalink) Old 12-27-2018, 11:12 PM Thread Starter
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2018 6.7 Fluttering noise with throttle?

I have a 2018 and since new under acceleration you can hear a faint fluttering noise that gets more noticeable as you give it more throttle. Figured it was a normal sound but after a while it started to get annoying and i second guessed myself.

Took it to the dealer and they told me they don't know what it is but think its normal.

Anyone else notice this?
Its most noticeable when at highway speed on cruise control and music and heat must be turned off to really notice it.
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post #2 of 5 (permalink) Old 01-01-2019, 08:41 AM
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I haven't noticed any unusual sounds in mine.


2000 F250 XL, 7.3 PSD, 4WD, 8' bed, Gooseneck, 159,940 miles (Sold)
2018 F350 XL Supercab, 6.7 PSD, 4WD, DRW
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post #3 of 5 (permalink) Old 01-30-2019, 10:44 PM
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I hear it in my 2017. It sounds like a cross between something loose under the hood flapping in the breeze at the same frequency as the engine and water spitting out of a compressor pop-off valve. Drives me nuts sometimes.

2017 F350 ECLB, 6.7L, Lariat, FX4, 3.55 E-Locker, Camper Package, Ruby Red/Magnetic, Black Leather
1978 F250 Flatbed, 351M V8, Custom, 4x4, Green
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post #4 of 5 (permalink) Old 01-31-2019, 09:34 PM
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My 2015 has it and so does everyone I've driven when I find that load/throttle position.

2015 F350 Platinum Max Tow What a beast with the 4.30 gears!
2006 F450 CC Hauler bed 4x2 6.0 L 6.0 auto, Lariat, 4.30 r/a, SCT, 4in exh. 103K New heads to repair diesel in coolant, 148K.
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post #5 of 5 (permalink) Old 02-03-2019, 09:27 AM
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My '18 does this but only on decel. If you find a road that's level and coast between 32mph down to 25mph, it will flutter away.
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