Hood Vibrating at highway speeds

[Will_T]

2021 Ram 2500. Hood shakes violently at front corners @ highway speed. Even worse with oncoming passing traffic.

Yes my truck does this when a oncoming semi goes by. The first time it did it was with a semi loaded with hay, both of us going probably 60mph. Thought I was going to lose the hood. It really moves a lot! Now I make sure if I am on a two lane highway and see an oncoming truck like that I edge over to the fog line a bit. Just a little more space when passing makes a difference. So far it has not had the shakes when just driving without oncoming semi traffic.

 

[Sponge60]

Didn't notice this on my 21 3500. I've been on a couple of trips at Interstate speed (80-ish mph) and no issue. But I would be pretty irritated if it were to happen. Hope a solution is available soon for those having this happen.

 

[mcspeed]

I’m thinking that it is an aero issue related to fitment. If some trucks have the problem and some don’t, it can’t be the aluminum. If it sits too high, air gets under it at speed. The rubber trim piece isn’t able to do it’s job of sealing out the air at speed so it gets under the hood and creates turbulence.

An easy test would be to tape off the gap between grill and hood and see if it still occurs.

If air travels over the top side it is unlikely to happen. If air gets under the hood, that’s when the issue occurs.

Many super cars that are capable of speeds in excess of 180mph are made of aluminum so I doubt the material is the sole reason for the problem.


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[Will_T]

An easy test would be to tape off the gap between grill and hood and see if it still occurs.

Mine flutters up from the driver's side of the hood, not the front. You can actually see the left side of the hood jump up when it happens.

 

[mcspeed]

Mine flutters up from the driver's side of the hood, not the front. You can actually see the left side of the hood jump up when it happens.

That is because the drivers side stop is higher. Air enters the front unless you are in reverse LOL. Adjust it and try the test.


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[Will_T]

That is because the drivers side stop is higher. Air enters the front unless you are in reverse LOL. Adjust it and try the test.


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I will try it. Mine does it as the semi is going by on the driver side so the wind that's pushing off the semi is likely coming at me at an angle and not directly from the front.

 

[Ruffone]

BikePilot, the aluminum definitely has a lot to do with it. Even your trusty Land Rover has it happen, here’s a quick link I found searching for “Land Rover hood flutter”, it took me right to the Land Rover’s owners forum.

Hood flutter

Re: 2013 LR4 LUX Hood flutter and buffeting at speed, especially in windy conditions Both latches adjusted in lowest position and both firmly latched Both rubber bumpers screwed out to contact hood corners Minimal movement when pulling up on hood corners Have considered taking down hood...

www.landroverworld.org

And here’s one for the brand new Bronco with hood fluttering.

Darn Hood Vibration/flutter -sport

Darn this isnt something i'm happily posting about :( Today on my 'finally got my Badlands order in' test drive, Clearly could see hood vibration in the middle area. Which is the larger flattish are

thebronconation.com

Here’s on for a Lincoln MKC.

windy highway going 70mph, hood shaking

www.mkcforum.com

Here’s on for the Toyota RAV 4.

Fluttering hood at highway speeds

www.rav4world.com

And yes even Ford trucks have the issue as well.

Hood Flutter

Took my 2021 KR on our first road trip this week. I noticed that at high speeds (70 mph +), when an oncoming semi passed us, the wind would cause the front left of the hood to pop up a little before settling back to its original position. It was slight but noticeable. Never experienced this with...

www.f150gen14.com

All these vehicles have hoods of various designs, but the one common thing they all share are aluminum hoods.

 

[Firebird]

My 2019 hood did it, but so far, my 2021 does not

 

[dddoug]

This worked for me - I tried adjusting the factory stops to no success ; adjusted to factory position , then bought 1/8" rubber stick on pads at Lowes and placed them on the non adjustable out board stops under the hood. Shake fixed !

 

[dcoop]

My 2020 does it pretty bad. Had a storm with some wind gust the other day and I was going down the interstate I thought the damn thing was going to flip up and smack the windshield or fly off.

 

[Will_T]

This worked for me - I tried adjusting the factory stops to no success ; adjusted to factory position , then bought 1/8" rubber stick on pads at Lowes and placed them on the non adjustable out board stops under the hood. Shake fixed !

Thanks - I have some pads like that so may try it. It will be a bit harder to determine with mine if it works as it only does it sometimes when a large, oncoming semi with a large flat side wall or load of hay goes by just on the other side of the yellow line. Normal semis don't usually do it and if I pull over a few feet to the fog line or more, it won't happen. You put it on the one passenger side and one driver side outside stops only? The stop shown in the attached photo?

 

[dddoug]

Thanks - I have some pads like that so may try it. It will be a bit harder to determine with mine if it works as it only does it sometimes when a large, oncoming semi with a large flat side wall or load of hay goes by just on the other side of the yellow line. Normal semis don't usually do it and if I pull over a few feet to the fog line or more, it won't happen. You put it on the one passenger side and one driver side outside stops only? The stop shown in the attached photo?

View attachment 24791

Yes - both sides at your arrow.

 

[FractalRammer]

Yes - both sides at your arrow.

I will try this. I've reported my issue on my new 2022 Ram 3500. At highway speeds, it's nerve-wrecking. Doing a cross country trip next week. Will report back.

 

[JALOPYJUNK]

Mine is extremely bad at highway speeds. Both sides of the hood flutter. Happens with no other vehicles around.

 

[H3LZSN1P3R]

Mine is extremely bad at highway speeds. Both sides of the hood flutter. Happens with no other vehicles around.

How fast are you going? Mine only does it at 70+ mph

Almost every vehicle i have ever driven with an aluminum hood flutters at highways speeds or when a transport passes

 

[Bombaman]

Mine does like @H3LZSN1P3R 's, at higher highway speeds. I do have a AVS Hood deflector, which may or may not compound the issue

 

[H3LZSN1P3R]

Mine does like @H3LZSN1P3R 's, at higher highway speeds. I do have a AVS Hood deflector, which may or may not compound the issue

I also have the hood deflector but it did it without it aswell…


if you think its bad normally you should see how bad it is with my plow on its all over the place lol

 

[Dean2]

I want to take mine to the dealer and get it addressed, mine only does it when semi goes past the other direction but I still find it annoying. Did anyone post or come up with the TSB number for the hood fix of gluing the cross brace down and replacing the cover pins? I am also going to try gluing the 1/8" strips on the hood posts to see if that helps. Thanks.

 

[Gondul]

I want to take mine to the dealer and get it addressed, mine only does it when semi goes past the other direction but I still find it annoying. Did anyone post or come up with the TSB number for the hood fix of gluing the cross brace down and replacing the cover pins? I am also going to try gluing the 1/8" strips on the hood posts to see if that helps. Thanks.

It's been a while but I don't think it wasn't a TSB for the 2500s...

 

[H3LZSN1P3R]

I want to take mine to the dealer and get it addressed, mine only does it when semi goes past the other direction but I still find it annoying. Did anyone post or come up with the TSB number for the hood fix of gluing the cross brace down and replacing the cover pins? I am also going to try gluing the 1/8" strips on the hood posts to see if that helps. Thanks.

There wont be a fix the only way to stop it is to make a steel hood. Aluminum has no rigidity no matter haw many strips you glue to it unfortunately