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My sound deadening project 2012 Sienna XLE

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109K views 90 replies 46 participants last post by  Belladini  
#1 ·
I got my XLE on March. Great car so far and quiet most of the time. However, the noise can be really loud depending on the condition of the road and surrounding cars. So I decided to try out sound deadening solution.
After many reading, this is my approach: CLD tiles on the outer skin. .5 lb/sql MLV with self sticking CCF on it.
I'm planning to do front wheel well, firewall (hopefully) front door, sliding door(hopefully) back quarter, rear hatch and trunk.

After removing couple parts the manufacture sound proof material revealed: some damper on the outer skin functioning like CLD, some damper glue on the floor and trunk, some foam and fabric. Fairly insulated. Floor matting is thick. I mean really thick. Maybe around 1.5-2 inch thick!

The problem now is: the damper is minimal so the door and panels still have resonance. Foam and fabric can absorb noise but doesn't block them. Both front and rear wheel well does not have any damper and can cause some sound vibration.

First thing I do:
wrap the rear wheel well with Dynamat. This makes a BIG surprise. The road noise dropped. The sound is depressed and feels deeper.

Then my Raamat order and MLV arrived. My next thing done:
Rear hatch with 50% Raamat, MLV with CCF using Velcro to stick on. Licence plate using Ensolite for padding.
Rear quarter with 50% Raamat. MLV with CCF. The right side only covers 70% of the rear quarter due to the tool set and the air intake for the rear AC. The right side covers to 90% of the rear quarter.
I tested on highway and feels the noise are now moving forward! Back is much much quieter.

Rear speaker is oddly shaped and have shallow space. Planned to get some nice one since I take off the panel. However there isn't any available bracket on the market to fit the odd shape. So, I just use some dynamat and ensolite on the back metal. Great surprise from the stock speaker. The base, mid and high are much clear than before. It is definitely much better than front muddy speaker!

I'll continue my project and will update again.

Cheers!
 
#54 ·
Before you begin, ensure you have a plastic trim removal tools like this. You will need 1 and 2 (from left) for this project

http://www.harborfreight.com/5-piece-auto-trim-and-molding-tool-set-67021.html


and a good led headlamp similar to this

http://www.amazon.com/LED-Lenser-880002-Headlamp-Black/dp/B0053H1842/ref=sr_1_1?ie=UTF8&qid=1363023784&sr=8-1&keywords=H7+Lenser+LED+headlight


Also try to do this on a warm to hot day.Plastic becomes brittle in cold and you are much likely to break tabs and clip holders. You can leave the van in Sun for a couple of hours and then attempt it

The rear trim piece is one piece from 2nd row all the way back to the hatch. It has only two bolts, one on each side, the one for the third row seatbelts that goes into roof. Unscrew the bolt (14mm I think) and let the belt slide in the roof. Everything else is clips.

You have to first remove the trim pice on the second row floor, by the sliding door. Gently tug on it and remove it upwards pulling towards the roof Then, loosen the floor trim on the rear hatch.

Next, remove the inserts you see in the side trim. There are 3 or 4 on each side. One of the round insert on the drivers side has an electric connector. Unplug it before removing. On the 8 seater, the belt that holds the seat on the side has popup inserts. You cannot remove them out due to the buckle thickness. You pop those out and then let them fall into the void behind the trim. Don't worry, they are anchored to the van so you can't loose them

If you want, pop out the cup holder on the side panel. It is not necessary but makes it much easier to see behind the trim when you are pulling. Now it is a judgement call. Alternating between rear and front, start pulling on the trim from below (in the middle of the trim between 2nd & 3rd row) and on the front side (by the sliding door) and rear side (by the hatch). Pull gently but firmly and try to apply even force.

The trim is held by two types of clips. One similar to the front doors (white ones that go into the holes) and will pop out easily. The second ones are tabs that hold the upper part of the trim to the C-Pillar and the rear pillar. Those are the ones that will be tough to seperate. As you exert pressure, you will see the trim trying to seperate from the tabs. That is when you insert the plastic trim removal tool (I used the second on in the picture above) and they will just pop off.

The last PITA is the rear join where the trim is held on the floor with the bottom trim on the rear hatch. You will need to lift that rear floor trim to separate the side side trim. Another pair of hands will help but not required.

Once you separate the trim, look at all the clips to ensure none is broken and also study there location and how it will go back. I broke a couple but had some from another vehicle which I reused on this.

Additional clips are available from http://www.amazon.com/Toyota-Door-Panel-Retainers-67771-01010/dp/B0040CVQ48/ref=pd_sim_sbs_misc_1


Will try to update with some pictures later. Meanwhile you can use the attached PDF for the XM tuner install which has pictures of where and how to remove the plastic trim. It shows for the drivers side Passenger side is similar
Thanks for the detailed info. I've added deadening material everywhere else but the re
 
#56 ·
anyone ever try the ziebart sound deadning material sprayed underneath the car?
 
#57 ·
#58 ·
Hi Shien,
I am in the process of doing sound deadening to my car. I really learn a lot from you. Thank you. Could you pls share w/ me the instructions on how to open the panels? I did the front from watching video on youtube but have no clues for the sliding door, back panels and hatch. Again, thank you.
 
#60 ·
Does anything think its necessary to use MVL on top of Raammat and Ensolite or will Raammat and Ensolite will suffice? Trying to figure out if Package #1 will be enough for do front doors, sliding and rear quarter panel.
I can't wait to see/read who/what replies to this
 
#62 ·
Sorry I'm a bastard! Do you know how many questions I've fielded over the years about insulation? Too many questions, very little "doing"!
I've completed 9 automobiles, 4 trucks and 2 motor homes, each with different techniques and amounts of material. Tear into it, do a door, or 2, then re access your needs. There is no right/wrong. In order to do it first you must begin. Everything is on the fly, just do it!
Remember Raammat is for resonance reduction, Ensolite is for sound reduction. Tap and apply, who needs a friggin roll! The sheets are easier. Peel and apply Ensolite isn't what a customizer uses, too awkward. Buy the rolls of Ensolite and a can of spray and get after it.
MLV is for contest winners, not a "friggin" minivan. I'm 52 and I won't have good hearing for much longer anyway, are you trying to hear a "mouse fart" in the 3rd way? EEBSASW
 
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#63 ·
I do a lot of car stereo stuff and the best ones to use and not that expensive are murder mat and audio technix deadener, when you apply these, you dont have to cover the whole thing, you do probably a sheet per panel and should not add that much weight. what your prupose is to stop the panel from vibrating to create noise.
 
#64 ·
I do a lot of car stereo stuff and the best ones to use and not that expensive are murder mat and audio technix deadener, when you apply these, you dont have to cover the whole thing, you do probably a sheet per panel and should not add that much weight. what your prupose is to stop the panel from vibrating to create noise.
Excellent advice!
 
#76 ·
I just did this on my front passenger door to start with, I used Noico 80mil tiles, Noico CCF and TMS MLV 1lb/sqft, all purchased from Amazon. It's very odd driving with only one door treated. The speaker in that door sounds much louder than the one sitting right next to me and there's an odd absence of sound from that area that feels like when you have to pop your ears because you're not hearing things evenly. It took a little under 3 hours for that one door, I had a difficult time getting the interior panel back on -- I think the driver's door will go a little faster since I can use the passenger side MLV sheet as a template for the driver's side.