Engine Hum at 70mph

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Sep 27, 2018 | 09:19 AM

jred2255

Thread Starter

Mountain Pass

Joined: Sep 2018

Posts: 128

Likes: 24

Engine Hum at 70mph

Wondering if anyone else has experienced this with their 6.7.

From 67 mph to 74 mph only while in 6th gear and under light throttle I hear an audible hum from the engine. It's not very loud but over the course of minutes, it becomes increasingly annoying.

I searched around the forum with no luck. I don't believe it is the tires or coming from another source, sounds like it is coming from directly in front of me in the engine bay.

Any help appreciated. I'll eventually bring it into the dealership, but this sounds like the kind of problem they would dismiss.

2018 F350 Platinum 6.7.

Sep 28, 2018 | 10:02 PM

bldfrdblu

Senior User

Joined: Oct 2017

Posts: 221

Likes: 2

From: Granbury, TX

Humming = Happy 😊

Oct 4, 2018 | 06:30 PM

Davydee

Junior User

Joined: Apr 2008

Posts: 51

Likes: 0

From: Fulltime RVer

I've got something similar, and it can get annoying. I've just considered it a function of the turbo just sucking in more air and, more or less, ignored it as ours kicks in around 71 mph. We're not at those speeds all that often. If you find it, let us know! David

Oct 5, 2018 | 01:21 PM

txsd

Mountain Pass

Joined: Apr 2017

Posts: 102

Likes: 15

I have the same thing with my '17 6.7 and have always chalked it up to the turbo as already suggested. I notice the turbo gauge up just a little at 70 MPH for some reason.

Oct 5, 2018 | 05:21 PM

KKG

New User

Joined: Mar 2018

Posts: 2

Likes: 0

I believe I have a similar sound since new and Ford wants a shift cable to be replaced. I haven't got it in to the dealer yet to see if that's the fix or not but mine doesn't do it in 5th gear so I drive 5th when at speeds 65-70.

Oct 5, 2018 | 09:37 PM

Jml403

New User

Joined: Jun 2018

Posts: 8

Likes: 0

From: Columbus

KKG is correct. I had this, bugged the crap out of me. The shift cable is the fix and now it’s a dream on the highway.

Oct 6, 2018 | 10:48 PM

kkirt1

5th Wheeling

Joined: Apr 2007

Posts: 48

Likes: 0

The hum on my new truck was from the transmission. Ford replaced the transmission and all is good now.

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Oct 8, 2018 | 10:34 AM

jred2255

Thread Starter

Mountain Pass

Joined: Sep 2018

Posts: 128

Likes: 24

I haven't spent enough time above 70mph for it really to annoy me but i will mention it when i bring the truck in for service. Thanks for the input guys.