Weird rattle sound from exhaust (i believe)

[broski]

ive noticed recently that sometimes when i am sitting idle, in drive, i hear an annoying rattle sound from the back of my car.

its only sometimes.

i dont know if its my exhaust possibly? maybe its loose? im not sure. any ideas? i looked around the interior, its nothing inside, it has to be something outside ya know?

[Vypurr]

Loose heatshield on your exhaust. Almost guaranteed. Just jack up your car and continue to hit parts with a hammer or something until you get your rattle. Then either put a metal clamp on it, or just cut it off!

[broski]

thanks bro, ill check that out tomorrow, hope thats it.

[SpendOne]

muffler bearings...

[Gorilla Unit 33]

^lol

Hey man theres rumor that the early 90's nissan's have a common problem with the gas tank straps and over period of time become loose and rattle. I think im having the same problem now actually and will eventually get a chance to take a look at it after graduation.

[broski]

haha i hope its an easy fix, the **** is ANNOYING.

[cburwell]

My Sentra does that. If it's not a shield on the exhaust, check the shields around it. The rattle on my car is caused by a loose shield near the gas tank.

[justinlansdale]

check the exhaust hangers/mounts also, i know my MSP has ****ty hangers and the exhaust sways and rubs up against the shields underneath which makes a really annoying noise.

[broski]

what do these headshields look like? any photos possibly? and apparently these shields can be taken off with no issue? or is that not safe

[Vypurr]

http://z.about.com/d/autorepair/1/5/W/1/-/-/heatshield.jpg

The silver shield on there. Usually they rust and rattle until you pull them off or they just fall off. The protect some areas from excess heat off of the exhaust, but they are not always required.

[broski]

vypurr thanks for that, ill look into it tonight maybe or tomorrow. i hope thats it

[xthestarryeyesx]

my car does that too (91' 240) and it's pretty annoying haha.

[speedooo]

my old civic did that. 5 hose clamps solved that issue

[pearl]

rip the heatshield off, you dont need it. i slammed a couple of them from speed bumps.