Dealer reported needed "muffler dampener" as the fix for this on my car; not a new muffler. We'll see how it holds up.

 

does anyone have paper work or anything i can show the dealer that my car is doing this, its been doing it for some time but they said theres nothing they can do ...... idiots cuz mines terribly loud i can hear it from inside my condo! im guna send em an email with the youtube links etc etc

 

just bring the TSB in to them. tell them to call erickson infiniti to confirm this is an issue and they have fixed it before.

 

Does anyone know where to get the TSB of if there is like an "infiniti TSB" depository. My exhaust was doing it and after me telling them like 3 times, because each time they could not "recreate the sound", they changed my muffler. The noise is back again. They told me the reason the noise was there was because the mounting bracket was loose???

This is frustrating because they don't want to fix it and I'm 19 so they won't give me a rental car, even though I purchased a new car from them by myself. That should be a good case of age-discrimination....if it only existed

 

gonna come back regardless, want it to stop go aftermarket...

 

that's funny, I forgot that I had a rattle on cold start and brought my car in for an oil change....service guy heard it start up and told me he was going to replace the muffler and that it was a known issue. Funny, I always thought they were a bit short sighted here but I guess they did me right.

 

Oxnard service replaced my muffler with only 10K miles on it. Original was getting a bit more rattle as time went on. My video below was done at 4K miles, at cold start, which just did not seem right even then.
YouTube - 090301 2008 G37 factory noisy exhaust sound on startup 1400rpm

Finally got a new bigger Infiniti battery 700CCA after several Infiniti customer service calls, and the driver's seat leather is on order to get rid of the bubble. Lots of warranty work it seems, and the battery was / (still will be?) the longest issue.

 

Just bought a 2008 G37 sport a couple of days ago, noticed a rattling coming from my muffler/exhaust as well, except it sounds MUCH worse than some of the other videos I've seen documenting the problem...

YouTube - Infiniti G37 exhaust rattle...

(jump to around 1:12... it's horrible...)

 

i had my muffler replaced last month came with new tips to

 

That is encouraging to me... Mine has 11K on it and i started it at a golf club
and was just talking how great the car is with a bunch of BMW dudes, then I started it in front of them and they heard that metal buzzing sound.

Did the muff replacement get rid of the sound...

 

Took it to my local Infiniti dealer with a printout of the TSB. He took one glance at the TSB and all but said, "Oh, another one of these." Got a new muffler under warranty. I'm happy.

 

I got mine done this morning... Dealer replaced muffler, no questions...
ONLY 1 PROBLEM... The new muffler they put on, the left tip was about 1" lower
than the right... I told the service manager, most people would not care, but I'm
detail freak, and it will bother me... He said, NP, that was the last we had in stock,
I'll order another, should be here by Thurs, will call you when it comes in and we'll replace.

I was like... Really? That is so cool... The Tech even said to me, dude its gotta be right,
Tech said, I'm particular about my car and that would bother me too. So, I'm happy, just
hope the new one is right. New Muffler sounds quieter??? Just me or they doing soemthing different?

 

Hey guys, I'm pretty sure I've got the infamous muffler rattle too. Here is a clip...

YouTube - - G37S rattle

I took my car into the dealership yesterday and was told that since I had an aftermarket exhaust (Invidia Gemini), they wouldn't replace anything.

Can anyone confirm whether it sounds like the TSB Muffler Rattle, and if so, should it be void because of my catback exhaust? I appreciate the help. I'd hate for the dealership to pull a fast one on me.

 

I just heard mine today, and its awful, sounds like the manifold is leaking, calling the dealer today and get this fixedweI have only 5400 mile on our car

 

hey guys, i have the same problem here, i have an 08 g37s coupe and i get that tin rattle in the exhaust from starting the car and then it goes away. i'm in canada but car was bought by original owner... would the muffler still be under warranty?

a mechanic, good friend of mine said he had a similar problem and replaced his catalytic converter and the rattling disappeared... anyone know how to go about this problem?

thanks