sometimes when im driving i notice a rattling sound that seems to be coming from the catylic converter. someone told me its because the cat has small round pieces of metal and they can come loose and rattle. is this true? if not wht could be causing the rattling?

 

It is true. It can also be a heat shield that has come loose. Get under your car and look.

fs

 

check for rocks in the heat shield

 

heat shield rattle = we all deal with it

mine kicks in a 1700 rpm

 

sometimes the dead bodies in the trunk can rattle a bit

 

i think it might be the skeletol remains of a mouse in my oil pan......

honda sold some sort of "rattle kit" for a while, but it wasnt a recall.....just get down there and tighten and clean up if it botheres you that much

 

it doesnt really sound like the heat shield rattle though its not just at a certain rpm its more like i hear it with most weight shifting but i tend not to hear it as i drive more its like when the car warms up it goes away but thats not always true. it sounds like little ball bearings or something rattling around in the back and it doesnt alwasy happen when i hit a bump so i dont think its a piece like the plate bumping the trunk or something

 

and also i got rid of all the dead bodies thats the first thing i did and i still hear the rattling.... .jk

 

anyone know how i can fix this?

 

Well like everyone says... it's definitely the heat shield... I just took mine off... but it's there for a reason.. so if you can tighten it it'll be better. I took it off with a help of a friend at a shop which have lifts... if you don't do it on a lift.. it's almost impossible to take off.

 

its most likely just some rocks in the heat sheild

 

where is the heat shield? by the catylic converter?

 

On top of it....

 

and the bottom of it