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Old February 27th, 2007, 01:54 AM   #1 (permalink)
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Vibrating sunroof

No, it's not a quick road to orgasm. If anything, it's anything BUT. It's pure annoyance, really.

The issue:
Cruising at considerably decent speeds (+40mph) and with the sunroof fully extended, a vibrating sound or vibration itself seems to come from the sunroof assembly. When cruising at an ungodly speed for your grandparents (70mph+), this sound can almost be worse on your pampered wet ears than sitting in your backseat with your beloved crappola Fosgate sub thumping to the N-Sync.
The problem:
It's not the sunroof. It's that wonderfully considerate idea of a wind deflector that, I guess, was supposed to make the sunroof assembly look a little more luxurious (because it hardly does a decent job of quieting down all that wind noise... and in fact WORSENS it), that is really THE problem. OK... let me say that again and clearly:

That deflector has to go.
The solution:
Take that shit off.

You don't need to break it. Just use a bread knife or some other sturdy prying tool to free the ends of the wire-spring.

You'll notice that without the deflector (simple pre-removal test: pull the deflector down and out of the way of the wind) your ride WILL be quieter, and the sunroof will cease to vibrate. Kinda tells you a little something about that wonderful triple-decker aluminum wing you're wanting for your birthday, huh?
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Old June 21st, 2007, 06:49 PM   #2 (permalink)
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The plastice deflector, or that metal bar that slightly pops up when you open it. Because I've noticed an annoying sound, and when I reach up and squeeze it together the noise stops. OR if I stuff a napkin in between the frame and that metal bar it stops.

I'd love to make it stop, and I know it didn't always do it either. Just one day on the freeway at about 100 mph it started up.

Thanks for posting this info up.

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Old April 29th, 2009, 12:13 PM   #3 (permalink)
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i know this is an old thread.. but im having that horrible noise on mine too.. and was wondering if after all this time.. taking off that metal bar solved everything with no consequences?? i heard people had sunroof leaks.. taking that bar off didnt cause any leaks or anything did it??
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Old May 6th, 2009, 09:53 AM   #4 (permalink)
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As mentioned in the first post, taking the deflector bar will make the shuddering noise disappear, and in fact take away any wind noise caused by disturbing the airflow before the sunroof. I think in retrospect that the deflector shields the sunroof from a little bit of downforce, but I honestly can't see it being a major issue taking that plastic piece out.

The ride will be quieter, and the shuddering will disappear.
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Old June 14th, 2010, 11:19 AM   #5 (permalink)
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mine use to do that, about a year ago my sunroof was leaking water during some heavy rainfall so i took it to the dealership they said the sunroof wasn't properly adjusted so they fixed that and replaced the rubber sealant. Any way ever since then i haven't had the vibrating problem, probably due to the adjustment. If i were you guys i would go get it checked out. Was in the warranty too so no charge
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Old October 2nd, 2010, 11:42 AM   #6 (permalink)
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Long time ago, Mitsu had something posted about this in their Tech news flyer, and it has to do with the damper rubber piece that you will see in the middle of the deflector, and it touches the inside roof of the car. That piece of rubber damps the buffeting or vibration. Later models were supposed to be built with a longer or larger piece. My car is an 05 built '06 and I had that problem since day one of owning it. I took a piece of double sided tape and stuck it to that rubber piece, and it's been five years, the tape is still there, and I have not had the problem since then.
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Old August 5th, 2011, 10:49 PM   #7 (permalink)
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I haven't seen this issue as I haven't had occasion to drive an Eclipse with a sunroof, but I have seen it as an engineer on other cars as it happens. I'd be interested in seeing a video. Here's what I've seen on other cars...

WEAK SPRING ARMS

On one car that did this, there was some kind of problem with the spring arms that held the wind deflector up. When the air is moving over the top of the car, it's putting air pressure on the wind deflector pushing it down, and the spring arms are pushing it back up. If the air pressure is greater than the force provided by the spring arms it will push down the wind deflector. Once it's pushed out of the air stream, the force of the spring arms will be greater and it pushes back up. This will go back and forth turning air deflection on and off, basicly, and it can get to be sounding like a helicopter... I've found this can even get a bit painful in the ears.

The spring arms should be designed to be strong enough to hold the wind deflector up, so most likely there might be a quality problem involved and this should be fixed under warranty.

WIND DEFLECTOR HARMONICS

Another thing I've seen is that at certain speeds, the air pressure can start vibrating the wind deflector, this seemed a little less severe than the helicopter noise but made a buzzing sound. This can be observed as a vibration that is more like the whole deflector is bending back and forth rather than the whole thing bouncing up and down. When we saw this happen, we were able to stop it by wedging play-dough into the bottom of the wind deflector to add mass to it. Before you do this, you should be able to find a place or places where you can apply finger pressure to stop the vibrating. These will be the places you add the mass to the deflector.

If you're worried about the play-dough falling out you could probably use epoxy or something just as well, but still use the play-dough to confirm that adding mass will fix the issue.

In this case, your dealer may or may not have a fix... if the OEM is aware of the issue they would probably have a TSB out for it, but if not you might get an identical part with an identical problem.

WIND DEFLECTOR HEIGHT

I've also seen where a helicopter noise came about and the supplier was able to resolve it by changing the stop heights so the wind deflector went up more into the wind.

WIND DEFLECTOR FUNCTION

If you want to consider removing the wind deflector because of the noise, I suggest you consider trying just holding it up to stop the vibration so you can hear what it is supposed to sound like, then hold it down so you can hear what it sounds like without the wind deflector. The wind deflector should prevent the rushing wind noise you get with the sunroof open. The vibration is definitely worse than the rushing wind noise, but I've found there are ways to fix the vibration.

Hope this helps or at least is informative, and this is probably info you can use even if you run into issues on any other car with a sunroof and a wind deflector.
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Old November 14th, 2011, 12:22 PM   #8 (permalink)
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was anybody able to confirm if this was the reason for the vibration when the sunroof was closed? mine has started to creak during 40+mph drives
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Old August 19th, 2015, 05:28 AM   #9 (permalink)
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Quote:
Originally Posted by ThE JaIMsTa View Post
was anybody able to confirm if this was the reason for the vibration when the sunroof was closed? mine has started to creak during 40+mph drives
Revive a dead thread, lol. Mine creaks and makes noise when closed also. Seems okay open though.
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Old August 19th, 2015, 08:42 PM   #10 (permalink)
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GROUP 42 BODY
http://tearstone.com/eclipsefsm/2006...0005400-42.pdf
SUNROOF ASSEMBLY PAGE 42-98
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