06 m45 sport rattle under acceleration!

[crza81]

Ok i am new to the forum and have a question to see if anyoone else is experiencing this issue. from a stop i hear a metallic rattle noise between 2-3 k rpms and it is intermittent! very frustrating. sounds like it coming from the front pass. side......if anyone has this problem or knows a fix!!!!!

[szh]

Ok i am new to the forum and have a question to see if anyoone else is experiencing this issue. from a stop i hear a metallic rattle noise between 2-3 k rpms and it is intermittent! very frustrating. sounds like it coming from the front pass. side......if anyone has this problem or knows a fix!!!!!

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

[runis]

I have the same issue. Rattle is definitely in the engine compartment...between 2-3k RPM...goes away after that. Does not do it in neutral. Anyone?

[CakeDaddy]

heat shield or worst case.. motor mounts. I suggest jacking the car up and locating the heat shield and wiggle it with your hand (use gloves) and/or start the car while on jack to see if the sound if more evident while the car is jacked.

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

[mym45sport]

I finally got the dealer tech to replicated this on my M45 and he tested another m45 that had the same rattle/buzz. The dealership said they contacted Infiniti who said it was a known problem, #927866. I have document and the dealer said when Infiniti has a fix , they will repair mine. It's so annoying....

[mym45sport]

Dealer actually changed out the Y pipe, however the rattle was still there. That's when they contacted Infiniti.

[maxnix]

I presume you are im;ying under acceleration. If it sounds like a can of marbles being shaken, then you are probably not using a Tier 1 Premium fuel.

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

[ArbitrageMan]

Ok i am new to the forum and have a question to see if anyoone else is experiencing this issue. from a stop i hear a metallic rattle noise between 2-3 k rpms and it is intermittent! very frustrating. sounds like it coming from the front pass. side......if anyone has this problem or knows a fix!!!!!

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.

[OhioAlex]

Do you have the dealers name and reps name who opened this case with Infiniti? I am having the same issue with my 06 M45 and have had it to the dealer 3 times to no avail. Did you ever get it fixed? Any help you can provide me with will be helpful to myself and my dealer. Thanks!

[MRider]

I think I had a similar situation, it sounded either like a knock and ping noise (like when you don't have high octane gas) or like a loose chain on bicycle rattling coming from under the front carriage. If this sound like my case, you might want to have them check the brake cable line...may need to be tighten.

[ArbitrageMan]

Im taking mine in this morning for the issue. I hope the figure it out because its really loud when you have the windows open...and its getting nice out.

[M4T5]

mym45sport did say Infiniti acknowledges this issue and was stated to reference this: The dealership said they contacted Infiniti who said it was a known problem, #927866.

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

[ArbitrageMan]

My service managed called this afternoon and said they'd found a loose heat shield and replaced it. I was pleased, but on my way home I realized the problem had not been fixed. Its exactly the same as before.

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.

[OhioAlex]

I had my car back at the dealer still with the same problem. I referenced that number and they said that pertains to the exhaust hitting the oxygen sensor but that that was not my problem. They said they placed a wedge in between the 2 and it was still happening. They are as perplexed as me and after 3 days of trying to fix, have given up. Now I'm very annoyed that this expensive car rattles like a Hyundai. If anyone else has success, let me know. I am still convinced that it's a bad catalytic but they won't replace it unless they are more convinced that is the problem.

[ArbitrageMan]

Does anyone remember, and this was like 15 years ago, a car called the Chevy Lumina? They had a sport version of it and the exhaust sound was very unique. It was a reverberating...repeating...tremble...

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 luminahttp://static.howstuffworks.co...1.jpg

[jeostang]

My car is at the dealer right now for this issue. The rattle is from a heat shield and there is a service bulletin about it. They said they have to order parts to get it fixed.

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.

[ArbitrageMan]

Something mechanically went wrong with the car and they wont fix it under the warranty? What was their reason? Did they say the part had just worn out...or it was damaged by a rock...something like that?

[jeostang]

I think its just the dealer not wanting to do the work. Consumer affairs called back and asked me to pay for it and they will reimburse me. So I guess I'm happy.

[leftlane1]

I also had the exact same "coins in a tin can" sound upon acceleration, between 2k-3k rpm. I pushed very hard with the dealership, who went with the same "heat shield" fix. That is not the problem - I promise. The real problem is microfractures in the Y-pipe that cause the rattling under strain. The design issue is that the exhaust pipes hang too low and you can have an impact and not even know it, thus leading to a crack. After going around and around, and literally being embarassed to drive my car due to this noise, I finally printed reams of examples of similar problems I found online, and gave the pages to the tech. After they stopped considering me a loony, they actually talked to Infiniti tech help and discovered the problem. They had a tech get under the car, powerbraked the engine into the right rev range, and found the cracks.

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.

[OhioAlex]

Who was your dealer and do you have a specific contact there who may be able to help my dealer out? Any help would be appreciated as I am now at 50K and warranty running out at 60. Thanks.

[mpgmusic]

Could you tell us who the dealer was that made this repair for you? I am also in the Dallas area and ahve the exact same issue.

Thx

[Zamba]

I think I have the same sound in my M35X, but I never was able to figure it out before reading this thread. Thanks

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

[Mazeska]

Interesting, I have the full Megan exhausts, mid pipes, and cat back. I did not have this problem when it was stock but now I have this exact problem. It sounds to me to be the heat shield around the mufflers, but I may be wrong. Please keep us up to date.

[leftlane1]

Sorry for the delay - I don't check on here very often. I had the work done at Grubbs Infiniti, after unsuccessful attempts at Sewell. The service manager there is Hoot Lankford, and he's great to work with. In fairness to him, he didn't get involved during the first go-round. I continued to press them (and actually refused to take my car back until it was fixed for certain). It was absolutely caused by microfractures in the Y pipe. Once they replaced that pipe, the problem went away. Initially they said it was due to an impact and wouldn't b covered under warranty, but I raised enough of a stink about this problem and the design that they in fact did cover it.

[OhioAlex]

I called Hoot and he said he would need your name in order to pull up the work order to see how it was diagnosed. He said due to the volume of cars that come through there, he did not specifically remember that issue. Would you be willing to provide your name so I can have him look that up? Or if you would be more comfortable emailing me directly, I can be reached at [email protected]. Thanks for any help you can provide!

[leftlane1]

I'll do ya one better - here are my service record work order #s:

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-EH000Gasket - 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!

[OhioAlex]

Thanks for the info - I will try calling them back and may try to get my dealer to call them directly.

[Q45tech]

Heat shield rust and rattles from rocks inside has been a known problem since the 1990 Q45. The fixes are well known and eventually everyone will get some form of repair.In 19.5 years I've had to do mine twice.

[leejoseph]

Greetings to Everyone,I'm a consumer of an Infiniti product as well. Jan 08, I purchased a brand new 07 Infiniti M35 and for a year I faught them on the rattling, pinging, rocks in acan issue. Finally it took for the reginal manager to come down after filing two complaints with the inter-circle program. It took both of us to go into the garage and actually have the tech take the "heat Shield" off and to our dimise, we found that the small piece of material inside of it was deteriorated. He made them order a new one and the issue went away. Outside of that; the middle seat popped when someone raised it because the latch was broken, my wood moding on the driver side came a loose, the passenger mirror controller went out and the last straw was a rattling in the passenger door they could not fix.

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 [email protected]

[leejoseph]

(URGENT!!!!) Please contact me with that information about this being a problem. I had a new 07 that i purchased in 08 and after working a deal on the 09 sport model, I'm still having the same issue.

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

[email protected]