Go Back   The Mustang Source - Ford Mustang Forums > Mustang by Model Year > 2005-2009 Mustang
Sign in using an external account
Register Forgot Password?
Search

2005-2009 Mustang
S197 Discussion & News

Welcome to The Mustang Source!
Welcome to The Mustang Source,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 12/8/09, 5:39 AM   #1
V6 Member
 
Coupe Guy's Avatar
 
Marc

Join Date: July 9, 2008
Location: Georgia
Posts: 61
Coupes
Hood Shake?

Has anyone experienced their stock hood shake at speed? I was driving on the interstate going about 80/mph and noticed my hood shaking up and down. About five minutes later, I noticed the hood became unlocked and was only held shut by the safety latch. I was able to safely pull over and close my hood but I was nervous during the remainder of my drive that it was going to pop open.
__________________
2008 Mustang GT

Last edited by Coupe Guy; 12/8/09 at 5:43 AM.
Coupe Guy is offline   Reply With Quote
Old 12/8/09, 6:03 AM   #2
Member
 
HG6283's Avatar
 
Ron

Join Date: November 28, 2009
Location: South-Central PA, USA
Posts: 22
2009 Bullitt
Quote:
Originally Posted by Coupe Guy View Post
Has anyone experienced their stock hood shake at speed? I was driving on the interstate going about 80/mph and noticed my hood shaking up and down. About five minutes later, I noticed the hood became unlocked and was only held shut by the safety latch. I was able to safely pull over and close my hood but I was nervous during the remainder of my drive that it was going to pop open.
Yes, this seems to be a common concern with S197 owners.
Some have achieved success by adjusting the rubber bumpers Up and/or the center latch Down. Others have drilled holes in their hood (yikes) and installed hoodpins.

Here's another solution: "Stealth S197 Hoodpins"

http://www.mustang50magazine.com/tec...ins/index.html


.
HG6283 is offline   Reply With Quote
Old 12/8/09, 6:35 AM   #3
GT Member
 
05 Mustang's Avatar
 
Cameron

Join Date: July 14, 2008
Location: Canton, Georgia
Posts: 154
08 Convertible GT500
Images: 13
+1^^

adjusting the hood bump stops should help with calming down the hood movement, but having the hood actually pop up??...that should have never happened. was your hood open recently?
__________________
2008 Convertible GT500
Torch Red w/Silver Rocker Stripes
Alcoa Super Snake Rims
JLT CAI
2.6 Metco Pulley w/Metco Double Bearing Auxillary Pulley
Borla Stingers
Eibach Pro-Kit
Clear Bra
#415 of 463 Manufactured in Torch Red
#1855 of 2070 Convertibles
05 Mustang is offline   Reply With Quote
Old 12/8/09, 6:45 AM   #4
I lust for a M24
 
05GT-O.C.D.'s Avatar
 
John

Join Date: November 6, 2004
Location: Football HOF, Canton OH
Posts: 7,065
Quote:
Originally Posted by Coupe Guy View Post
Has anyone experienced their stock hood shake at speed? I was driving on the interstate going about 80/mph and noticed my hood shaking up and down. About five minutes later, I noticed the hood became unlocked and was only held shut by the safety latch. I was able to safely pull over and close my hood but I was nervous during the remainder of my drive that it was going to pop open.
Yes. This is common. There's probably been 2 dozen threads about it (not bashing for not searching, just stating that it's very common). It seems to be caused by the amount of air that gets under the hood due to the way it overhangs the grille. Adjusting the hood bumpers and or adding hood pins are the most common and effective solutions.
__________________
That door you just kicked in was locked for your protection, not mine.
05GT-O.C.D. is offline   Reply With Quote
Old 12/8/09, 11:49 AM   #5
Tasca Super Boss 429 Member
 
Five Oh Brian's Avatar
 
Brian

Join Date: November 14, 2007
Location: Pacific NW USA
Posts: 3,593
14 Mustang Glass Roof GT
Very common, including my 07 GT. I finally gave in and installed Shelby non-logo'd hood pins. My car sees plenty of track time and I can't afford to have a hood latch fail on the track (or the interstate, for that matter).
__________________
Current Mustang: Ruby Red 14 GT 5.0L Glass Roof Coupe with 6R80 Automatic & Navigation.
Current Mods: Mike Rousch Tuned, Circle-D 5000 rpm stall converter, 4.10 gears, O/R H-Pipe & GT500 Axlebacks.
Mustang Dyno Results: Coming soon!
Best 1/8 Mile: 7.48 @ 91+ Best 1/4 Mile: 11.76 @ 117+.
Previous Mustangs: 11 5.0L Brembo GT, 07 GT Vortech SuperCharged, 03 Mach 1,
00 "Spring Feature" GT, 89 5.0L LX Sport, 88 LX, and 75 Mach 1.
Five Oh Brian is offline   Reply With Quote
Old 12/8/09, 3:21 PM   #6
Mach 1 Member
 
Arrow's Avatar
 

Join Date: February 8, 2007
Posts: 595
Over 80mph or if you are getting a strong headwind, you'll see the hood wobble. It's normal and has to do with the shape of the hood. Check the rubber standoffs sticking up from the radiator cover (to make sure they're in contact with the hood) and make sure the latch mechanism is in good order.

I wouldn't worry too much about it, but if you find it happening a lot, invest in a set of hood-pins.
__________________
2007 GT Prem., Performance White, JLT CAI, FRPP Stingers, FRPP X-Pipe
Arrow is offline   Reply With Quote
Old 12/10/09, 10:28 AM   #7
Team Mustang Source
 
Mas35NYR's Avatar
 
Michael

Join Date: September 27, 2004
Location: Old Bridge, NJ
Posts: 957
2005 Mustang GT
Garage
Send a message via AIM to Mas35NYR Send a message via Yahoo to Mas35NYR
Had that happen too, coming back from Carlisle going down hill at a decent speed. Thankfully the latch did catch, has never happened again though.
__________________
"Angelina"
2005 Mustang GT Sonic Blue
Purchased: 8/04/05 Picked up: 8/10/05
Mods: Yes please!
1/4 mile: 13.418 @ 105.32 mph on 10/29/06
Mas35NYR is offline   Reply With Quote
Old 12/10/09, 8:00 PM   #8
Mach 1 Member
 
825LTRGT's Avatar
 

Join Date: December 13, 2008
Location: Midwest
Posts: 831
2008 GT/CS
Images: 3
Mine does it also. Especially, at highway speed passing or following a semi.

Never had it pop open though.
__________________
'08 GT/CS

Engine/Perf Mods - Borla 11752 Axle Backs, K&N, FRPP Plenum Cover, JLT Catch Can, Stack Racing STB.
Exterior Mods - SHR CS Grill Insert, CCMB Front Bracket, Jaeger Bros Flaps, WE Sequentials, AM Magnetic Blackout.
Interior Mods - Round Shifter Ball, Grabber Pony Jam Nut, More to Come!

'82 5.0 GT- Gone but not forgotten
825LTRGT is offline   Reply With Quote
Old 12/10/09, 8:49 PM   #9
Team Mustang Source
 
theedge67's Avatar
 
Steve

Join Date: July 4, 2006
Location: St. Louis Area
Posts: 2,873
'06 Mustang GT
Send a message via MSN to theedge67
As said before, it's all about the bump stops. Just turn them counter-clockwise to raise them up a bit. Keep going until the hood won't close properly, then back them down a turn or so. I have cured the problem on 3 different Mustangs now this way.
__________________
JLT II Cold Air Intake, Amsoil Synthetic Air Filter, Tillman Speed Tunes, Bassani SS Axle Backs, Bassani X-Pipe w/cats, Ford Intake Plenum Cover, Blue "MUSTANG" door sill inserts, MGW Eject Button, J&M Lower Control Arms, Mileage Warranty Delete

"If you can't fix it with a hammer, you have an electrical problem"
theedge67 is offline   Reply With Quote
Old 12/10/09, 10:29 PM   #10
Mach 1 Member
 
TheReaper's Avatar
 
Jesse

Join Date: August 27, 2007
Location: Southern Al
Posts: 977
14 Black GT
It should stop moving between 120 to 140 mph.
__________________
Black 2014 GT Premium BBP 6R80
TheReaper is offline   Reply With Quote
Old 12/11/09, 4:43 AM   #11
V6 Member
 
Coupe Guy's Avatar
 
Marc

Join Date: July 9, 2008
Location: Georgia
Posts: 61
Coupes





Quote:
Originally Posted by 05 Mustang View Post
+1^^

adjusting the hood bump stops should help with calming down the hood movement, but having the hood actually pop up??...that should have never happened. was your hood open recently?
No, not recently.
__________________
2008 Mustang GT
Coupe Guy is offline   Reply With Quote
Old 12/11/09, 7:17 AM   #12
Tasca Super Boss 429 Member
 
karman's Avatar
 
KARMAN

Join Date: January 4, 2006
Posts: 3,718
06MustangGT 04MustangGTconvertible
Garage
Quote:
Originally Posted by theedge67 View Post
As said before, it's all about the bump stops. Just turn them counter-clockwise to raise them up a bit. Keep going until the hood won't close properly, then back them down a turn or so. I have cured the problem on 3 different Mustangs now this way.
As I've said before, this worked for me also.
__________________
2006 Vista Blue GT Deluxe,Dark Charcoal, Manual, 64W 18" Wheels,Spoiler Delete,IUP Satin, 14A,43A,17L
Receipt Date------- 01/25/06 Serialize Date-------03/09/06 Produced Date------ 03/29/06 Arrival Date--------- 04/11/06
MODS: JLT CAI, 93 Octane SCT dyno tune, WebElectric sequential tail lights & pony corral, Front plate relocation,Hella 500 Driving lights instead of fogs with high/low beam wiring switched,GMS fixed double strut brace and A-arm brace.
Custom Dyno Tuned by: http://www.performance-dyno.com
karman is offline   Reply With Quote
Old 12/11/09, 12:43 PM   #13
Mach 1 Member
 

Join Date: September 22, 2009
Posts: 527
The S197 does not have an open cowl to reduce under hood pressures caused by ingestion of air through the grill.

This, combined with the hood's lightweight construction which allows flex, you get hood wobble at speed.

To my knowledge there has never been a claim with the hood failing where it wasn't operator error (not closing the hood properly).

Hood pins add an extra bit of safety, but this won't necessarily stop the hood from buffeting. The only way to truly do that is to allow the high pressure air under your hood to escape. This means creating an opening in the cowl, or adding a hood that allows the air to escape from the low pressure area on top of the hood.
__________________
-Jason
| 2012 GT | 1969 Firebird | 2006 Tundra |
jlmounce is offline   Reply With Quote
Old 12/11/09, 6:22 PM   #14
I lust for a M24
 
05GT-O.C.D.'s Avatar
 
John

Join Date: November 6, 2004
Location: Football HOF, Canton OH
Posts: 7,065
Quote:
Originally Posted by jlmounce View Post
The S197 does not have an open cowl to reduce under hood pressures caused by ingestion of air through the grill.

This, combined with the hood's lightweight construction which allows flex, you get hood wobble at speed.

To my knowledge there has never been a claim with the hood failing where it wasn't operator error (not closing the hood properly).

Hood pins add an extra bit of safety, but this won't necessarily stop the hood from buffeting. The only way to truly do that is to allow the high pressure air under your hood to escape. This means creating an opening in the cowl, or adding a hood that allows the air to escape from the low pressure area on top of the hood.
Umm... just how do you have operator error when closing a hood? Is there also a way to close a door improperly, because I sure wouldn't want that opening up while I'm going down the highway either.
__________________
That door you just kicked in was locked for your protection, not mine.
05GT-O.C.D. is offline   Reply With Quote
Old 12/12/09, 3:19 AM   #15
Member
 
Francesco's Avatar
 
Frank

Join Date: December 22, 2006
Location: Germany, near Bielefeld
Posts: 24
2006 Mustang
I use this solution on my car:

Click the image to open in full size.
__________________
"A horse, a horse, my kingdom for a horse!" - (Wililam Shakespeare)
Francesco is offline   Reply With Quote
Old 12/12/09, 8:01 PM   #16
Tasca Super Boss 429 Member
 
Five Oh Brian's Avatar
 
Brian

Join Date: November 14, 2007
Location: Pacific NW USA
Posts: 3,593
14 Mustang Glass Roof GT
Quote:
Originally Posted by theedge67 View Post
As said before, it's all about the bump stops. Just turn them counter-clockwise to raise them up a bit. Keep going until the hood won't close properly, then back them down a turn or so. I have cured the problem on 3 different Mustangs now this way.
Tried that on my '07 before resorting to hood pins. The bump stops, alone, could not stop my hood from shaking, but it helped.
__________________
Current Mustang: Ruby Red 14 GT 5.0L Glass Roof Coupe with 6R80 Automatic & Navigation.
Current Mods: Mike Rousch Tuned, Circle-D 5000 rpm stall converter, 4.10 gears, O/R H-Pipe & GT500 Axlebacks.
Mustang Dyno Results: Coming soon!
Best 1/8 Mile: 7.48 @ 91+ Best 1/4 Mile: 11.76 @ 117+.
Previous Mustangs: 11 5.0L Brembo GT, 07 GT Vortech SuperCharged, 03 Mach 1,
00 "Spring Feature" GT, 89 5.0L LX Sport, 88 LX, and 75 Mach 1.
Five Oh Brian is offline   Reply With Quote
Old 12/13/09, 12:05 PM   #17
Mach 1 Member
 

Join Date: September 22, 2009
Posts: 527
Quote:
Originally Posted by 05GT-O.C.D. View Post
Umm... just how do you have operator error when closing a hood? Is there also a way to close a door improperly, because I sure wouldn't want that opening up while I'm going down the highway either.
Sure. Ever closed your door, thought it was closed but not quite? Not saying it's easy to do, or common for that matter but it's not within the realm of impossible.

My point here was that it's a visual issue only. If there was enough buffeting going on to cause the hood to dislodge from it's primary latch there would be a safety recall, or a TSB at the very least addressing the issue.

There's enough S197 cars on the road that if it was a safety problem, ford wouldn't be able to ignore it based on complaints through the NTSB.
__________________
-Jason
| 2012 GT | 1969 Firebird | 2006 Tundra |
jlmounce is offline   Reply With Quote
Old 12/16/09, 8:47 AM   #18
Mach 1 Member
 
Arrow's Avatar
 

Join Date: February 8, 2007
Posts: 595
I have known one person whos hood bracket failed, and another whose latch failed, leading to scary results. But that's a rare, rare thing.

Besides, if you're racing, there's different regs for safety. On the road, going fast enough to cause a potential hood failure...hood failure is the least of things to be concerned about.
__________________
2007 GT Prem., Performance White, JLT CAI, FRPP Stingers, FRPP X-Pipe
Arrow is offline   Reply With Quote
Old 12/16/09, 10:15 PM   #19
Bullitt Member
 
NastyStang113's Avatar
 

Join Date: September 24, 2009
Location: Central Florida
Posts: 287
2008 Mustang GT
Quote:
Originally Posted by Francesco View Post
I use this solution on my car:
Where did you buy the material? Good job.
__________________
Roush TVS tuned by VMP Tuning 525 rwhp / 501 rwtq @ 11 #s
[/B] [/COLOR]
NastyStang113 is offline   Reply With Quote
Old 12/17/09, 1:45 PM   #20
Member
 
Francesco's Avatar
 
Frank

Join Date: December 22, 2006
Location: Germany, near Bielefeld
Posts: 24
2006 Mustang
Quote:
Originally Posted by NastyStang113 View Post
Where did you buy the material? Good job.
Thanks.
It's some foam rubber - I've ordered from my rubber dealer here in my region, pre-cut to the right dimensions and with an adhesive strip on it at one side... very easy installation.

The hood shake at >=80mph has vanished...
__________________
"A horse, a horse, my kingdom for a horse!" - (Wililam Shakespeare)

Last edited by Francesco; 12/17/09 at 1:47 PM.
Francesco is offline   Reply With Quote
Old 12/17/09, 1:45 PM
 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


 

Sponsors



 

MotM Winners
December 2012 MotM Winner November 2012 MotM Winner September 2012 MotM Winner August 2012 MotM Winner

All times are GMT -6. The time now is 5:57 AM.


Clubs, Garage Plus vBulletin Plugins by Drive Thru Online, Inc.