why does this damn car rattle so much!?!!!
it pisses me off
my whole rear chassis and trunk is dynamatted

the headliner rattles, the pillars rattle, the rear speaker deck rattles

any ideas of what to do?
cuz im thinkin about takin the system out because it upsets me so much

 

I have a rattle in the glove box and I hear a rattle near the rear passenger seat. Also the plastic covers to the child seat clips bounce up and down which creates an annoying noise as well.

I just got used to it.

 

do you have a system?

 

I don't, but the stock sub also rattles the trunk release cables located on the rear speaker deck.

 

Get over it everybody...we paid for performance, not luxury. If you want arattle-free slow ride then you shoulda bought a RSX...

 

My car is tight and quiet. No rattles to speak of. The only noise I get is when I have the radio loud the pioneer sub does rattle the deck lid a bit.

 

Ill take pictures maybe if im not lazy lol....I got 9 sheets of dynamat...36 sq feet...2 sheets on the trunk lid itself...on spaced out by the 6x9's and the rest inside the trunk...only rattle I get are the doors...which will be the next place i am dynamatting

 

i used a 100 square feet on dynamat and did the whole trunk, chassis, and ceiling
my rear speaker deck shakes, and so does the headliner

how do you soundproof a headliner??

 

RIP IT DOWN!!!! Lol idk....

 

lol I had my 3SC serviced for a rattle in the trunk. Covered under warrenty.

 

hmmm, i wonder if they would do that, or say no cuz of my system
what do you think?

 

Are you unhappy with the way your car is acting? Service it! Its under warrenty! Who cares if it has a system in it, the fact is, even without the system [hint]you would get rattle driving down a bumpy road [/hint]

 

haha, good point
i might completely remove the system when i take it in for service, they'll never know

 

i used a 100 square feet on dynamat and did the whole trunk, chassis, and ceiling
my rear speaker deck shakes, and so does the headliner

how do you soundproof a headliner??



are you sure its quality dynamat...that is a butt load of money...and im not quite sure where you would have all of that...my whole trunk was dynamatted with 36 and the 6x9 rack thing..plus 2 sheets are on my trunk lid..so if you have 100sq feet..than you probably wasted some somewhere...make sure you dont just apply the whole sheet itself..cut it up and make sure there are no air pockets..and its flush against what your applying it too..i also cut little squares and take things apart..and put the dynamat over the bolt hole or screw or whatever it attatches to on the frame then screw the bolt, screw, or push the clip through it..that helps rattling pieces... ...Ill take some pictures today of my trunk...i doubt youll see the bottom or sides becuase i dont have time to take everything out..but my 6x9 rack and trunk lid i should have up

 

Can you post some pics of that 100 sq/ft in action ?
Most likely there are air several air pockets or the the layers are not snug against eachother, causing a resonation of sorts. I have quite a bit of experience with sound proofing. You are going for solid mass, air, mass, or MAM system to dead out the sound. This is referred to as a 2 leif design. I need to see install pictures before I can guess anymore lol. It sounds like you may have just packed this all in there without a lot of regard for acoustics. 100sq/ft in a trunk may be a wee bit too much. what about acoustic sealant? Everywhere there is a flange or where two pieces of material meet, there is a possibility of rattle (resonation). ESPECIALLY with ultra low frequency sub woofers. I am sure some can loosen bolts... Your problems are with physics not a chevy cobalt ss

 

i used 100 sq ft, my buddy works for an audio company, and he ordered a whole roll of it, so i took some
i put the sheets at a 45 degree angle whenever possible, and heated it up to press it down everywhere
it was my first time using this stuff, and it was a pain in the ass, and i can almost guarantee i did **** job based on your guys posts
i wish i had just used spray soundproofing, worked amazing in my old car

here are a couple pics i have of it
i linked em cuz theyre huge
http://img306.imageshack.us/img306/3047/52050044xs.jpg
http://img306.imageshack.us/img306/2338/52050050cj.jpg

 

my car rattles too, and I only have the CD player system, no factory sub or anything. I knowticed that it's comming from my passanger side door mostly.

 

i took my child thigs off but it still didnt help much but i found out if you push the rear deck tighter it helps as little