Whine or squeal when accelerating from stop
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Joined: Jun 2014
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From: Medford, OR
Whine or squeal when accelerating from stop
I’ve begun to notice a low squeal or whine when I pull away from a stop somewhat "briskly." It goes away if I back off the throttle or at around 25 mph, and I don’t hear it, even under full throttle, over 25 or so. I thought at first it was turbo whine and I just hadn’t noticed it before, but, if it’s not, it’s probably something I need to pay attention to before it gets serious. Any thoughts?
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Joined: Jun 2014
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From: Medford, OR
It never goes through a gear change while I’m hearing it, so I can’t determine whether it’s rpm or mph.
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From: Medford, OR
Nope. THAT wouldn’t concern me. 😂
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From: Pflugerville, tx
I’ve begun to notice a low squeal or whine when I pull away from a stop somewhat "briskly." It goes away if I back off the throttle or at around 25 mph, and I don’t hear it, even under full throttle, over 25 or so. I thought at first it was turbo whine and I just hadn’t noticed it before, but, if it’s not, it’s probably something I need to pay attention to before it gets serious. Any thoughts?
easily recreated... more noise/louder on starts and stops..
definitely coming from front of truck..
turns out it was the empty metal hanger on the coat hook behind me..
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Thread Starter
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Posting Guru
Joined: Jun 2014
Posts: 959
Likes: 10
From: Medford, OR
I doubt this is your problem, but I just spent a week looking for the same kind of sound in my 2018 F350 crewcab..suddenly started.. on start and stop, would hear a tire squeal sound.. like out of alignment tire scrape..
easily recreated... more noise/louder on starts and stops..
definitely coming from front of truck..
turns out it was the empty metal hanger on the coat hook behind me..
easily recreated... more noise/louder on starts and stops..
definitely coming from front of truck..
turns out it was the empty metal hanger on the coat hook behind me..
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Posting Guru
Joined: Jun 2014
Posts: 959
Likes: 10
From: Medford, OR
The belt seems okay - I could push it about an inch - but the sound could be belt squeal. Might be time to have it replaced; 98,000 on the clock...
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Posting Guru
Joined: Jun 2014
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From: Medford, OR
Update:
ive decided that it’s a whistle - made by air movement or leaking - not a squeal.
I’ve never heard it above ~40, possibly because road/wind noise drowns it out.
It only happens at "medium" throttle. As I roll away from a stop and increase throttle/acceleration, the whistle will start. At that point, either reducing OR increasing throttle will result in the whistle stopping.
Seat-of-the-pants dyno says that performance is normal, and fuel economy hasn’t changed. (I've put on ~2,000 miles since my last post - just rolled over 100,000 miles yesterday.)
ive decided that it’s a whistle - made by air movement or leaking - not a squeal.
I’ve never heard it above ~40, possibly because road/wind noise drowns it out.
It only happens at "medium" throttle. As I roll away from a stop and increase throttle/acceleration, the whistle will start. At that point, either reducing OR increasing throttle will result in the whistle stopping.
Seat-of-the-pants dyno says that performance is normal, and fuel economy hasn’t changed. (I've put on ~2,000 miles since my last post - just rolled over 100,000 miles yesterday.)