it sounds like some sort of heat shield to me

no, all explaind - no loss of power, fuel consumption, anything like that. Most said it got worse in 3rd gear, going up hills. shit like that



from what i seen, this was 3-4 peoples problem, they found a rusty shitty bolt they had to tap out and replace - no more rattle

This post was edited by IB0T on May 31 2013 12:08pm

Right when it decels. and only in decels. accels nothing. so i still think its something to do with the exhaust. something with the engine giving out fuel to the exhaust is rattling.
that's the only thing i can come up with.



tighten heat shields this morning

This post was edited by Bl00dy on May 31 2013 12:09pm

it sounds to me like it hits a sweet spot in the revs causeing just the right ammount of vibration on something, it sounds really light and not like a heavy piece of metal. does the car have a heat shield over the exhaust manifolds?

this is the thread i followed, btw. its old, but LOTS of people with this problem.
http://x.nissanhelp.com/forums/maxima/7738-2003-maxima-rattle-rattling-1500-2000-rpm.html

start from heatshield and just cuz you can't see anything wrong..try hitting it or shaking it to see if it will....
Cats ever been replaced?

Yes it does.



Cat converter was replaced with tranny about 3years ago

exhaust cat, no (only exhaust work was tailpipe)

This post was edited by Bl00dy on May 31 2013 12:11pm

get someone to get in the car and cause the noise while your under the hood to track it down. it sounds just like a lose bolt to me

there might also be a heat sheild where the manifolds go under the car in the back of the engin*** under the car. did you check those ones?

This post was edited by TeaRs- on May 31 2013 12:11pm

the intake manifold heat shield i'll have to take out the intake to get to, but i haven't checked that one, was waiting for my day off to check that. i check the underneath from flex pipe leading to manifold those heat shields were tightened up.

my next day off is sunday, just grabbing ton of ideas and but it all out then.

Thanks again guys appreciate the work.

This post was edited by Bl00dy on May 31 2013 12:15pm

imo its def one of those. it sounds to much like a heat shield to not be one lol