Subs go boom... now something goes rattle :(

my subs make a little rattling noise but i think that is just the rear hatch

Everybodys gonna have rattling, cougars are a great car for sub's though... best thing to do is turn the system up and just get out and get on ya back and find out where the rattling is actually coming from..

I can hear it from outside the car, but I haven't looked for it.

if you pull back the carpet on either side of the trunk, you may have to remove the plastic piece in the middle to get to it. you will see a vent on either side of the trunk. the vents have rubber over them to keep water and dirt out of the trunk. this rubber rattles when the subs hit. i didnt know what they were for so i didnt rip them out, but i did ducttape them and now it doesnt rattle. try that

i doubt the trunk vents are what you hear rattleing you might wanna look under neath there is a plastic tray behind that it you fuel vent canister and a couple of other emmissions junk under there might wanna make sure there tight.

the vents in the back of the trunk is a place to let air escape the car when you close the doors!

the baffle on the exhaust. the peice that covers the cat. check that it rattled on mine...till i ripped it off.

A great way to identify exactly where a rattle is coming from is if you have an AUX input on an aftermarket radio, or an FM Modulator hooked up, connect it to the audio output of a laptop and download any free audio generator program and start slowly adjusting the frequency until you hear a rattle. Keep it locked on that frequency and start poking around until you identify it!

why bother feeding through the deck? hook that baby right into the inputs for the subs.. otherwise id have to buy a AI-NET cable...

fancy someone other than the author considering a topic answered

Don't know how anyone could have subs and no sound deadening. But that's just me. That's the route I would recommend - keep the sound IN the car:biggrin:

agreed. subs should be used with sound deadner.

i dont see how you rich kids expect me to-do everything at once ...

Originally posted by: scrupul0us
Well unlike half the rust-bucket-fart-cans out there than simply have rattling trunks or license plates mine seems to be comming from underneith the car... Its not anything in the sparetire well... but Im thinking it might be the heatshield under the car... someone also told me there are vents in the bumper area that might be vibrating... anyone experience/fix this?

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I am experiencing the EXACT same thing. It is coming from somwhere under the trunk - sounds like air going through flaps or some flap, flapping away when the sub hits. I have look under there but not really searched howver.

Somebodies got to know what it is cause the rattling. Besides that, the trunk is tight as a bolt! But that rattle really does get to me when I step out to hear how the sound is outside the car.

Umm flapping sounds = rubber flaps on either side of the truck
they are the vent flaps. as for a solution... dunno

how heavy is sound deadening anyway, before u tell him to throw 200 lbs of that stuff in his car

sound deadener is very heavy. But you don't just put it everywhere. There are particular spots that can use it well.

Originally posted by: 99CougarNy
how heavy is sound deadening anyway, before u tell him to throw 200 lbs of that stuff in his car

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Well, the way I see it, I rarely "race" my car (1/4 mile, street...) but I listen to music 99% of the time in my car - so, if I add .25 seconds or so to my quarter mile time by adding sound deadener, then oh well. My car sounds great, music stays IN and my trunk doesn't rattle like two midgets in the back seat wraslin'!:thumbsup:

First of all how expensive is sound deadner?

And also, where are these "strategic spots" that they are suppose to go?

And im guessing I would have to pull out all the carpet to do it or I can just lift the trunk carpet and apply?

thanks.