Strange rattling noise from under car

danelonson

As I was driving home today with the windows down, I noticed a rattling/clanking noise that comes from the passenger side under/side of the car. It sounds to me like a thin metal plate vibrating and hitting something. As I drive normally I don't hear anything but any slight bump on the street (such as lane reflectors) and I hear it. If I'm on the middle lane and go over a reflector with my left tires I don't hear anything but on the right I do. I also noticed it on the highway as I went through a bridge that has slight bumps I could hear it really loud.
I know it's very hard to determine what this could be without you guys actually hear it but any ideas would be greatly appreciated. Thanks!

DOOMMONKEY777

Sound like something came lose get ur self under the car and look for anything thats missing bolts skrews or something that can move with ur hand back n forth remember saifety first make shure u have something to hold the car like a stànd if r jack fails and wheel shoks,

If u still cant find probl take to dealer i just hope ur not hearing the slave cylinder bearings if u have manual tranny well thats normal.

Good luck.

__________________
Kids don't do Drugs, Drugs are bad, so let the professional druggies do Drugs for you. 537whp/496lb/tq@8-9PSI 93 octane

danelonson

I dunno what it could be, I looked under the car and everything looks fine. I feel like if its coming from the wheel well.

SteveBad

Are you sure it's not the passenger seat belt buckle? That drove me nuts till I figured it out.

__________________
"Take the cannollis..."

DOOMMONKEY777

In that case take ur wheel off and se if ur brake caliper didnt loose a screw and its like plapping up n down, i had that happening to my civic after pads change didnt tighten screws properly.

__________________
Kids don't do Drugs, Drugs are bad, so let the professional druggies do Drugs for you. 537whp/496lb/tq@8-9PSI 93 octane

Leuz

Yeah, jack it up and inspect if you have any damage, maybe to the exhaust and/or take the right wheels off and look for loose parts. Interested in hearing what the problem was. G/L

__________________
2013 PW 370Z Touring+Sport, NAV
Tint 35% side, 18% back | RJM clutch pedal | ZSpeed SS lines | Stillen Gen3 CAI | Fast Intentions HFC and TDX 12'' CF CBE | UpRev

blackcherry20

Oil change lately? Check the diffuser...plate that covers up the area where they get to oil drain. (Thanks Isamu)

__________________
Grand Sport Corvette Arctic White

6MT

Muffler bearing.

__________________
Andrew

2009 370Z Sport/Touring 6MT sold
2013 Honda Civic Si coupe D/D

Grindkiezer

Is your crossmember brace rattling against your exhaust?

__________________
Z

LakeShow

This guy is gonna take apart his whole car LOL, everyone is telling him to "check this, check that, remove this/that"

__________________
|2013 Audi S4|Ibis White/Black|S-Tronic P+|
|2013 370z|PearlWhite/Persimmon|Touring/Sport/Nav|F.I. CBE 18" CF|
|Sold|2011 370z|Gun Metallic|Touring/Sport/Nav|

danelonson

I know its not that because i don't hear anything with the windows up. Its nothing inside the car.

danelonson

this might be the problem. I feel like the chatter might be coming from the exhaust rubbing against something metal. Is there a heat shield on top of the stock exhaust that maybe came loose? Its either the exhaust or wheel well area its hard for me to determine exactly where the chatter its coming from. It's a "thin rattling" so it leads me to believe its some type of thin sheet metal.

blackcherry20

^^^^^
The guys in the "what did you do with your Z today (with off topic replies)" thread thought this too...

__________________
Grand Sport Corvette Arctic White

CDepp

If it's the seatbelt flapping because of wind, you won't hear it with the window up. Try driving with the window down and the passenger seatbelt buckled.

__________________
-CDepp-
2011 MB Base+S M6 | Invidia Exhaust | TommyKairaHebiBeibi | H&R Spacers 15/20 | GTR Start | 305hp/240tq

SouthArk370Z

First thing I'd look at is the seatbelt (probably not it, usually a clunk from the buckle or a buzz/whirr/flap from the belt, but it's easy to check). Then I'd check the heat shields on the exhaust. Then I'd look through the FSM to see if there are any other thin metal shields that could come loose.

Good luck. If you can get someone to ride shotgun and listen they might be able to tell approximate location of rattle (in front of the door, under the door, behind the door).

__________________
Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub
Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma