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  #1  
Old 03-09-2007, 02:40 PM
fzr fzr is offline
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Noise in back when speeding up

This does not happen all the time but sometimes when I speed up only when I press on the accelerator I hear this metal on metal sound coming from the back, as soon as I let go of the accelerator the sound is gone, when I accelerate again its back, I dunno could it be pad rubbing against rotor???

Thanks
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  #2  
Old 03-09-2007, 04:58 PM
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Do u have an after market exhaust on and if u do check and make sure that nothing loose under the car because i did have that problem when u accelerate ur exhaust vibrate alittle bit so hope that help u out
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  #3  
Old 03-12-2007, 03:18 PM
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car is 100% stock
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  #4  
Old 05-08-2007, 12:31 PM
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I have the same problem, sort of like a humming sound, only when I press on the gas, right rear, can't be the wheel bearing otherwise I'd hear all the time.
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  #5  
Old 05-16-2007, 01:20 AM
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i also have the same problem on a 03 sedan
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  #6  
Old 05-16-2007, 02:09 AM
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May be an exhaust leak. I know it sounds strange but I have had one before on my last car and it sounds different once it comes through the cabin.
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  #7  
Old 05-14-2008, 01:45 PM
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Same Problem!

I just picked up an 07 coupe last week, and am having the exact noise. A friend and I spent about an hour and a half trying to figure it out. After a lot of trial and error we think its coming from where the suspension attaches to the car. When your in the car is sounds like a speaker is loose but we dropped the seat and I rode around with my head in the trunk and its definitely not speakers, its something in the right side of the car. I hope its the suspension at this point and the easy fix is to tighten it. The cars is going in to the dealer for it on May 17th. I will repost when the problem is finally fixed.

B
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  #8  
Old 05-15-2008, 10:32 AM
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Your license plate is probably loose and rattling when accelerating
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  #9  
Old 05-22-2008, 08:07 PM
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Just got the car back from the Infiniti dealer. Rattle is not fixed, they have to order a part. There are two different things that is can be and the most common is a part behind the rear seats that connects to the side pillar. The bolts that connect the two pieces come short from the factory and tend to come loose. Creating a metal on metal rattle. I will take the car back in next week for hopefully a final fix. I will post the results.

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  #10  
Old 05-24-2008, 06:12 AM
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could be your rear end bearings, is it kind of a howling or growling type noise?
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  #11  
Old 05-25-2008, 12:43 PM
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The noise is a metal on metal clanking noise. Happens about every 3 to 5 seconds. Sometimes a little bit longer depending the road surface. I really think its coming from the rear right suspension. The sound come through right near the rear seatbelt/ rear seat area. A friend and I put the seat down and he laid back there while I drove around, we really think thats what it is. The car is going back in on June 4th. Hopefully for a final time. I will update as soon as its finished.

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  #12  
Old 05-27-2008, 10:30 PM
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i got the same problem but from my left rear...i hear like a stretchin noise it happns when i step on the gas if some 1 knows abt this problem help us out
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  #13  
Old 05-30-2008, 01:58 AM
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I have a metal on metal popping noise happening in my car to. Mine only occurs when i take a right hand turn into and entrance to a driveway or something. I think it may be suspension related, but i cant seem to figure it out. I have replaced the rear camber arms, the springs, and tightened everything down, and still no luck.

I need an answer as well. any more ideas?
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  #14  
Old 05-30-2008, 03:18 PM
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Seems Like this is an all too common problem. My car is going in Wednesday of next week. Hopefully I will have some answers, my car is under warranty so ill keep it there until its fixed.

Breck
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  #15  
Old 05-30-2008, 05:27 PM
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maybe check your sway bar links? also do any of you have aftermarket suspension? did you use all the stock isolators?
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