Welcome to NICO!

I hope someone chimes in about this, because I have no clue! Is it inside the car or in the engine compartment? Does it happen when the car is stopped and you rev it? Or do you have to be moving to get it? Has this been going on since you got the car, or is it a recent thing?

Total SWAGs: something loose rattling around in the glove compartment? Are your front right lug nuts on tight? Everything tight in the engine compartment?

Z

I had a similar issue with my previous car (ack Legend) and I used a wedge between the heat shield and never heard it again.

good luck my man

If you are, better hook it up to an ODB II reader and check ECU and accesory functioning.

Discover the power of the button!

Finally someone else has posted about this. I have the exact same issue on my car. I just got the car a month ago, so I havent taken it in yet for service. It has 29,000 miles on it.

Ive narrowed it down to occurring during light to medium acceleration, between about 2300 and 2900 RPM. My guess is something in the exhaust system, because it seems to be a certain note that the exhaust hits that causes the noise. But it could be cat converter heat shield i guess.

I agree about it coming from the pass side. Its totally noticeable, and very annoying.

Anyone with this problem should reference this problem number to their particular dealership.
That should help with avoiding the shrubbing of the tech and service managers shoulders..........

J

Also, I asked them not to wash the car and when I picked it up they had. I got home and took a look at the car in the sun. Hello, swirl marks, all over the car.

I think thats very very similar to the sound this rattle makes on my car, except this is slightly more metalic.

Edit: heres a picture of a lumina
http://static.howstuffworks.co...1.jpg

My issue now is I paid 2000 for an elite warranty and they say that's not covered. Granted its only 280 bucks, but I just wondering what else will not be covered. I think I'm going to ask for my money back on this warranty.

After many visits with the heat shield repairs that did nothing, or the "cleaning of rocks" from under the car (I liked that one), the fix was finally for real.

Insist that your dealer examine the y-pipe and the attached exhaust tubes to see if there is a crack. I'd bet the farm that's what is causing your problem. Don't settle for these lame attempts to get rid of you as quickly as possible - you paid good $$$ for a luxury car that shouldn't sound like a jalopy every time you pull away from a stop sign.

Thx

mpg

Edit: I went to the dealership to have this issue fixed and they did the heat shield first. I drove it immediately afterwards and the sound was gone so, at least in this instance, the sound was coming from the heat shield.

Modified by Zamba at 10:06 AM 7/17/2009

My name is Todd Ermenio, and my customer # at Grubbs is ERME01.

1st attempt at Grubbs was 5/19/08 - work order #65109. The service advisor was Duane Hacking (no longer there). This was the "loose heat shield/rocks in heat shield" non-fix.

2nd attempt was at Grubbs on 6/16/08 - work order #66628. Service advisor was the same guy. This time I insisted on them keeping it until they found the fix. They finally replaced these parts:

Tube Assy - Exhaust, FR - 20020-EH000
Gasket - Exhaust - 20691-0P600 (2 of them)
Gasket - Catalyst - 20692-65J00

The tech explained to me that they found small fractures in the Y pipe while power-braking. It was definitely the metallic rattling from 2k-3k rpms you describe. This absolutely solved that problem once and for all (fingers crossed forever). I would have traded the car in at a huge loss if I had to deal with that noise any longer.

Hoot helped me recently with a suspension popping issue that I battled for over a year also, and when he got involved, the job got done.

Good luck!

Now; the new general manger tried ease my pain by working a deal on an 09 M35 Sport; I have had the car two weeks and again the rattling issue has returned. I have had intermitted issue with the passenger mirror after putting the car in reverse, and the AC in the seat hardly works..

Now, I'm looking to take legal action against infiniti because WE all should not be paying the money that we are for a vehicle that is suppose to be top of the line. I urge you all to file complaints with the BBB (Better Business Bureau). Also; if you would like to; please contact me because I would line to form an alliance about this. I'm taking my car back to the dealer today and heading to talk with my attorney about this.

Joe Lee
leejoseph@earthlink.net

Please contact me as soon as possible; with all the details about inifinti noting this issue.

240-447-3895
leejoseph@earthlink.net

Hey that's just normal operation!

But on the way to work this morning I did hear the noise I think, passenger side, cruising at 60 or so and heard it with light throttle.

Modified by EcstaSPT at 7:12 AM 7/14/2009

Its difficult to hear at that speed, but its definitely there. I usually here it at 25-40

Are your windows down when you hear it or does it matter?

Modified by EcstaSPT at 8:04 AM 7/21/2009

I have the same rattling on my 06 M35X with 40K, under acceleration I had two dealers check out the problem one said it was bad fuel. When said I use 91 or 94 Octane he then said it' engine ticking and all the infiniti do that. I don't think so.
So I went to a different dealer, they said it sounds like a timing problem so they re tuned the car no rattling for one day then it came back. They said to some back if I still have the problem.

THanks

Im with you. Lets keep this thread about the exhaust related rattle.

Twice my dealer has been unable to replicate the noise. When I take the tech out in the car, the car wont make the noise. So frustrating. I havent decided what Im going to do. My warranty expires in September, and Im leaning towards NOT getting an extended warranty. I also dont have tons of time to be taking my car to the dealer repeatedly.

'02 Navigator 4WD - Black - Tan
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