Notices
C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech

Hood bounce

Thread Tools
 
Search this Thread
 
Old Feb 15, 2018 | 10:12 AM
  #1  
mpetty's Avatar
mpetty
Thread Starter
Advanced
 
Joined: Sep 2016
Posts: 71
Likes: 1
From: Portland Tennessee
Default Hood bounce

Anyone else's hood bounce in the center near the windshield? I never noticed it on my spiral grey c5. But when I got my yellow one I noticed it shortly after getting it. Maybe I am just able to see it bouncing because of the more visible color, or maybe my hood is busted..?
Reply
Old Feb 15, 2018 | 10:15 AM
  #2  
Vetteman Jack's Avatar
Vetteman Jack
Administrator
Supporting Lifetime
Veteran: Navy
St. Jude 20 Year Donor
25 Year Member
Veteran: Reserves
 
Joined: Mar 2001
Posts: 368,320
Likes: 24,777
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Default

Are you sure your hood is fully latched down? The hood on my ‘03 does not bounce around.
Reply
Old Feb 15, 2018 | 10:26 AM
  #3  
mpetty's Avatar
mpetty
Thread Starter
Advanced
 
Joined: Sep 2016
Posts: 71
Likes: 1
From: Portland Tennessee
Default

Originally Posted by Vetteman Jack
Are you sure your hood is fully latched down? The hood on my ‘03 does not bounce around.
It makes a distinct click noise when I close it. I also cannot pull it open unless I pull the hood release. I will try lowering the adjusters to see if making it close lower fixes it.
Reply
Old Feb 15, 2018 | 10:36 AM
  #4  
mpetty's Avatar
mpetty
Thread Starter
Advanced
 
Joined: Sep 2016
Posts: 71
Likes: 1
From: Portland Tennessee
Default

Originally Posted by Vetteman Jack
Are you sure your hood is fully latched down? The hood on my ‘03 does not bounce around.
I should've also added that it bounces only one the highway. I should have someone video it at somepoint.
Reply
Old Feb 15, 2018 | 11:02 AM
  #5  
Andrew's Avatar
Andrew
Drifting
25 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Aug 2000
Posts: 1,601
Likes: 52
From: Jefferson City MO
Default

Originally Posted by mpetty
I should've also added that it bounces only one the highway. I should have someone video it at somepoint.
Yes, they can bounce or flutter at high speed. They seem to do this when over 125 mph or so. At about 150 it becomes very noticable.

So just how fast are you driving on the highway!
Reply
Old Feb 16, 2018 | 07:27 AM
  #6  
mpetty's Avatar
mpetty
Thread Starter
Advanced
 
Joined: Sep 2016
Posts: 71
Likes: 1
From: Portland Tennessee
Default

Originally Posted by Andrew
Yes, they can bounce or flutter at high speed. They seem to do this when over 125 mph or so. At about 150 it becomes very noticable.

So just how fast are you driving on the highway!
It happens at 70+ mph.

it just loves to move just a little bit. No noises or anything.
Reply
Old Feb 16, 2018 | 05:32 PM
  #7  
The Rabbi's Avatar
The Rabbi
Melting Slicks
Supporting Lifetime Gold
10 Year Member
 
Joined: Jul 2010
Posts: 2,793
Likes: 333
From: Leesburg Fl
2018 C5 of Year Finalist
St. Jude Donor '14,'18
Default

Find a good body shop and have them look at it.
Reply
Old Feb 16, 2018 | 06:00 PM
  #8  
1999corvettels1's Avatar
1999corvettels1
Safety Car
15 Year Member
Photogenic
Liked
Top Answer: 1
 
Joined: Jul 2010
Posts: 3,994
Likes: 386
From: Chandler AZ
Default

Yes mine does barely, it reminds me of jello (gelatin) jiggling gently, not a lot of movement but just a little bit at highway speeds.

My headlights when popped up jiggle even more at highway speeds over rough areas.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Feb 16, 2018 | 06:18 PM
  #9  
mpetty's Avatar
mpetty
Thread Starter
Advanced
 
Joined: Sep 2016
Posts: 71
Likes: 1
From: Portland Tennessee
Default

Originally Posted by 1999corvettels1
Yes mine does barely, it reminds me of jello (gelatin) jiggling gently, not a lot of movement but just a little bit at highway speeds.

My headlights when popped up jiggle even more at highway speeds over rough areas.
My hood does the same. Great description. I cant say the same about the headlights though.
Reply
Old Feb 16, 2018 | 07:08 PM
  #10  
ZO6_Dom's Avatar
ZO6_Dom
Instructor
 
Joined: Jul 2017
Posts: 138
Likes: 12
From: San Diego CA
Default

My hood does the same as well, also Millenium Yellow, I think the yellow is more noticeable. When I drive my dads silver Z I don't notice it much if at all
Reply
Old Feb 16, 2018 | 07:59 PM
  #11  
FX VETTE's Avatar
FX VETTE
Team Owner
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Jul 2016
Posts: 25,303
Likes: 1,683
From: The Steel City, Colorful Colorado
Winner 2020 C7 of the Year - Modified
Default

Mine jiggled like that when I got on the interstate just the other day. Freaked me out because it never did that before. I had just left a shop at the time so I suspect one of the techs didn’t close the hood properly. When I got home I popped the hood as I got out, before checking to see if it wasn’t shut right - out of habit I guess.

So I can’t say for sure if that was the cause, but I’ve had the car going a lot faster since then with no wobble in the center near the windshield at all.

I lube the latches once a year with ACDelco Super Lube (white lithium grease works too) and always let the hood “drop” from about a foot high.
Reply
Old Feb 17, 2018 | 02:10 PM
  #12  
DrRaySomeDay's Avatar
DrRaySomeDay
Racer
 
Joined: Dec 2015
Posts: 353
Likes: 40
From: Owasso Oklahoma
Default

I can start to notice it around 70mph but a passenger could clearly see it at 90mph or driving against a strong wind.
Reply
Old Feb 17, 2018 | 07:51 PM
  #13  
Route99's Avatar
Route99
Race Director
Supporting Lifetime
St. Jude 10 Year Donor
Photogenic
Loved
Community Favorite
 
Joined: Apr 2017
Posts: 10,247
Likes: 888
From: Hickory NC
2025 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
2020 C5 of the Year Finalist - Modified
St. Jude Donor '17 thru '26
Default

Originally Posted by mpetty
It makes a distinct click noise when I close it. I also cannot pull it open unless I pull the hood release. I will try lowering the adjusters to see if making it close lower fixes it.

Have you had a chance to lower the adjusters? I was wondering if that fixed the hood vibration. Thanks
Reply
Old Feb 18, 2018 | 09:27 AM
  #14  
mpetty's Avatar
mpetty
Thread Starter
Advanced
 
Joined: Sep 2016
Posts: 71
Likes: 1
From: Portland Tennessee
Default

Originally Posted by Route99
Have you had a chance to lower the adjusters? I was wondering if that fixed the hood vibration. Thanks
It did not fix it.
Reply
Old Feb 18, 2018 | 05:10 PM
  #15  
Route99's Avatar
Route99
Race Director
Supporting Lifetime
St. Jude 10 Year Donor
Photogenic
Loved
Community Favorite
 
Joined: Apr 2017
Posts: 10,247
Likes: 888
From: Hickory NC
2025 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
2020 C5 of the Year Finalist - Modified
St. Jude Donor '17 thru '26
Default

Thanks for the update. Guess that would have been too easy a fix.
I'm not experiencing that but wanted to file away the adjustment if that took care of it.
Hoping it's still a simple fix.
Reply
Old Feb 18, 2018 | 09:05 PM
  #16  
StingrayRebel's Avatar
StingrayRebel
Acct Suspended APR 2026 by request
 
Joined: Dec 2010
Posts: 10,367
Likes: 1,272
2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
Default

if the hood is loose on the latches while shut you should raise the adjusters (not lower them) to tighten the hood... doing this may raise the hood near the cowl so you can also try lowering the latches or doing both until you get it to your liking... I have seen this happen on other cars and it isn't fun to see when you're going fast but luckily I haven't had this issue on my car
Reply
Old Feb 18, 2018 | 09:37 PM
  #17  
Andrew's Avatar
Andrew
Drifting
25 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Aug 2000
Posts: 1,601
Likes: 52
From: Jefferson City MO
Default

Originally Posted by neutron82
if the hood is loose on the latches while shut you should raise the adjusters (not lower them) to tighten the hood... doing this may raise the hood near the cowl so you can also try lowering the latches or doing both until you get it to your liking... I have seen this happen on other cars and it isn't fun to see when you're going fast but luckily I haven't had this issue on my car
OP, it may help to clarify where you see the hood move. The kind of movement I am talking about is in the center of the hood, not the edges or near the window. That part of the hood does not move. At high speed, the center starts flexing.

So, are you seeing movement from the center or on the edges near the adjustment bumps or the hinge / latch?
Reply
Old Feb 19, 2018 | 10:21 AM
  #18  
mpetty's Avatar
mpetty
Thread Starter
Advanced
 
Joined: Sep 2016
Posts: 71
Likes: 1
From: Portland Tennessee
Default

Originally Posted by Andrew
OP, it may help to clarify where you see the hood move. The kind of movement I am talking about is in the center of the hood, not the edges or near the window. That part of the hood does not move. At high speed, the center starts flexing.

So, are you seeing movement from the center or on the edges near the adjustment bumps or the hinge / latch?
I am seeing it from the center. I guess it's time to write this off as normal then?
Reply
Old Feb 19, 2018 | 12:58 PM
  #19  
c5BlackBeauty's Avatar
c5BlackBeauty
Lifetime Member
Supporting Lifetime Gold
20 Year Member
Veteran: Air Force
Liked
Community Favorite
 
Joined: Dec 2002
Posts: 10,702
Likes: 76
From: New Jersey
St. Jude Donor '05, '12-'13, '15-'16, '21
Default

No bounce or jiggle on my 00. Hood closing on these sometimes takes a little finesse. There's posts out there about the proper way to close and getting the angle right....before dropping. Maybe your bouncy, bouncy is related to the hood not properly closing all the way???
Reply

Get notified of new replies

To Hood bounce





All times are GMT -4. The time now is 09:58 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE