G37 Sedan

Please don't be knocking ?

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Old 04-28-2014, 08:18 PM
  #31  
Adam West
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No it's an actual cat failure - the honeycomb catalyst starting breaking loose inside the metal body. The heat shields were fine. You could shake the cat once off the car and hear the medium rattling around inside. Unfortunately no CEL was thrown probably because it was still functioning enough.
Old 04-28-2014, 09:32 PM
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ANMVQ
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Hey Adam thanx , the vid was near the cat under the car . An the car was towed I the dealer this afternoon. I hear what your saying I've heard that sound to just not on a VQ
and just going through a rod knock with my coupe in 2011 and even listening to the two vids I took they sound the same I have that vid in this thread also
Old 04-29-2014, 12:55 AM
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RA081224
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Originally Posted by AUR11
A lot of my friends own Audi's and they never have any issues with the besides minor things like a window motor issue that was covered under warranty. Most are 09/10's that are now in the 70k+ mileage range and they don't have interior rattles or any mechanical issues with their cars, almost like how my Lexus was. It's pretty embarrassing at the number of times my car just dies upon startup or has some sort of weird glitch and how cheap the interior sounds and how my transmission feels like its slipping even though I know it isn't. I like this car but I just don't love it. It's going to the dealer for warranty work on Friday and if they can sort out the issues I may keep it for a few years since it's almost paid off.
Id have to say that in talking to other G owners your car seems to be the exception to the rule. Case in point, my G just turned 90K last week; no mechanical issues, car runs great and has only one rattle when the twin 10" subs hit
Old 04-29-2014, 02:28 AM
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desertmike680
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I have 68k on my 08 Sport, in which the only rattle or noise I hear comes from my throw out bearing. Clutch feels great, just a little noisier then it was 20k ago. Also, you should probably avoid German cars...that is if you want to be considered a D bag. Just my opinion considering the amount of German D bag enthusiasts here in Las Vegas
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Old 04-29-2014, 09:07 AM
  #35  
rm2342
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Originally Posted by Adam West
No it's an actual cat failure - the honeycomb catalyst starting breaking loose inside the metal body. The heat shields were fine. You could shake the cat once off the car and hear the medium rattling around inside. Unfortunately no CEL was thrown probably because it was still functioning enough.

Haven't seen much about that around here.. Someone should do a search.

I know this happened with some of the older 4 cylinder nissan which had pre cat failures. But, I hadn't heard of our cars experiencing this commonly.
Old 04-29-2014, 04:18 PM
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ANMVQ
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SOO
Adam West was right !!!

Just got a call from the dealer , IT was the passenger side cat was all broker apart. replaced under warranty car should be all set today!
Old 04-29-2014, 04:45 PM
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AUR11
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Originally Posted by ANMVQ
SOO
Adam West was right !!!

Just got a call from the dealer , IT was the passenger side cat was all broker apart. replaced under warranty car should be all set today!
Glad to hear it! Hopefully my car gets all the issues sorted out Friday, so the modding can continue!
Old 04-29-2014, 05:52 PM
  #38  
ANMVQ
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Yea me too as I just talked to my tuner this week
And I'm making an apt to finally have my mufflers installed
Yea found a place to custom in my exoticspeed mufflers!
Old 04-29-2014, 07:16 PM
  #39  
rm2342
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Interesting, so the rattle in the video was not the engine but the Cat? I didn't detect anything like the fillament rattling around in there, at least not what one would think it would sound like(jar of coins in exhaust)
Old 04-29-2014, 09:24 PM
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Adam West
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Glad I could be of service ANMVQ!

Another cat bites the dust... I'm convinced these cars are plagued with junky converters. At least you got it fixed under warranty and I'm really glad it wasn't rod knock (kiss of death). Do you have an extended warranty, what did they cover this under? Right now the dealer won't replace mine because my base is out and they need the car to throw a CEL to start a replacement under the emissions coverage.

Last edited by Adam West; 04-29-2014 at 09:34 PM.
Old 04-29-2014, 09:39 PM
  #41  
AUR11
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Originally Posted by Adam West
Glad I could be of service ANMVQ!

Another cat bites the dust... I'm convinced these cars are plagued with junky converters. At least you got it fixed under warranty and I'm really glad it wasn't rod knock (kiss of death). Do you have an extended warranty, what did they cover this under? Right now the dealer won't replace mine because my base is out and they need the car to throw a CEL to start a replacement under the emissions coverage.
Sounds like you have an excuse to get some HFC's!
Old 04-29-2014, 10:59 PM
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ANMVQ
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Originally Posted by Adam West
Glad I could be of service ANMVQ!

Another cat bites the dust... I'm convinced these cars are plagued with junky converters. At least you got it fixed under warranty and I'm really glad it wasn't rod knock (kiss of death). Do you have an extended warranty, what did they cover this under? Right now the dealer won't replace mine because my base is out and they need the car to throw a CEL to start a replacement under the emissions coverage.
They replaced mine under the factory warranty I'm still under powertrain
But I do the the Infiniti wrap extended till 118k . The cats tho are federal emissions no? Should be 8 80k I think ?
Old 04-30-2014, 06:55 AM
  #43  
Adam West
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I'm also under powertrain, but they won't replace. I contacted Infiniti Consumer Affairs on this one to inquire about a replacement and they told me if needs to be throwing a code to prove it's bad. 8/80k is federal emissions coverage. At least I got the driver's side one replaced under base warranty... we'll see how much worse the noise gets or if the cat eventually fails complete. I'm hoping for that code!
Old 04-30-2014, 07:50 AM
  #44  
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Glad to hear it was something simple. +1 for HFCs! Time to upgrade
Old 04-30-2014, 08:27 AM
  #45  
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So glad to "hear" that it wasn't an internal motor issue, hope that smile's back on your face again.


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