What the hell is this noise??

tonybui · 12-15-2011, 02:44 AM

My car is an 09 and this morning I just noticed the noise coming from the rear end of the car. Can anyone tell me where is this noise coming from? should I be worry? turn the volume up a little bit to hear (its more clear and louder on my iphone for some reason)

MUST · 12-15-2011, 03:48 AM

are you running an aftermarket exhaust system?

if so, it may be the evap-canister shield rubbing against it...as it did when i had the HKS dual exhaust before altering the shield.

kellyefields · 12-15-2011, 05:13 AM

have someone rev the engine while you listen for the sound. It may be an exhaust leak especially if you have put on an aftermarket system the bolts may need to be tightned?

USMCASA · 12-15-2011, 06:39 AM

a little info about your car would help diagnose this. is it stock? do you have hfc or aftermarket exhaust? how many miles are on the car?

tonybui · 12-15-2011, 10:54 AM

My car is an 09 with 25k miles, the car has topspeed exhaust and everything else is stock !!

I'm a noob with car, to me it doesn't sound like exhaust leak (as I imagine that it would sound different)

I have the exhaust on the car for about 8k miles and never encounter this weird noise before until recently. I will try to get all the bolts tighten up

What do you guys think is an alternative problem to this?

AlexRaymond19 · 12-15-2011, 12:01 PM

Well it clearly has something to do with the exhaust, or something caused by the vibration of the exhaust, as there are no moving parts back there when the car is sitting still. I would get it on a lift and see if you can pin point where the sound is coming from.

edub370 · 12-15-2011, 01:17 PM

idk about the top speeds but a lot of exhausts rub the metal heat shield right behind the passenger wheel. i removed mine

toxik · 12-15-2011, 01:32 PM

I had the same noise when I put my Berk exhaust on, it was the heatshield as mentioned above... but my problem occurred right as the exhaust was installed.... so the noise coming on after 8k miles is odd.... maybe the exhaust shifted a few mm's and that was enough for it to make contact. get on the floor and look for any contact.

12-15-2011, 02:44 AM	#1 (permalink)
tonybui A True Z Fanatic Join Date: May 2009 Location: Maryland Posts: 1,397 Drives: 09 Sports 6 Speed Rep Power: 426	What the hell is this noise?? My car is an 09 and this morning I just noticed the noise coming from the rear end of the car. Can anyone tell me where is this noise coming from? should I be worry? turn the volume up a little bit to hear (its more clear and louder on my iphone for some reason) Last edited by Trips; 12-15-2011 at 02:47 AM. Reason: fixed link

12-15-2011, 03:48 AM	#2 (permalink)
MUST Track Member Join Date: Jan 2009 Location: s.cal Posts: 599 Drives: her crazy Rep Power: 17	are you running an aftermarket exhaust system? if so, it may be the evap-canister shield rubbing against it...as it did when i had the HKS dual exhaust before altering the shield. __________________ • SSR • HKS • PMU • AKRAPOVIC • AE • HOTCHIKIS • H&R • HANKOOK • BROADWAY • RIP: "Marshmallow" August 30, 2009 — November 30, 2015

12-15-2011, 05:13 AM	#3 (permalink)
kellyefields A True Z Fanatic Join Date: Nov 2010 Location: Lexington Ky #BBN Age: 47 Posts: 1,149 Drives: Supercharged Rep Power: 16	have someone rev the engine while you listen for the sound. It may be an exhaust leak especially if you have put on an aftermarket system the bolts may need to be tightned? __________________ MY 2009 SC BUILD.

12-15-2011, 12:01 PM	#6 (permalink)
AlexRaymond19 Track Member Join Date: Jun 2011 Location: Maine Posts: 771 Drives: 2010 Nissan 370z Rep Power: 14	Well it clearly has something to do with the exhaust, or something caused by the vibration of the exhaust, as there are no moving parts back there when the car is sitting still. I would get it on a lift and see if you can pin point where the sound is coming from. __________________ 2010 370Z Touring MT \| Stillen \| Motordyne \| Momentum\| Z1 \| Fast Intentions \| Advant Garde \| RE11 \| Swift \| SPC \| Quaife \| Whiteline \| Evo R \| 322RWHP 259ft-lb Mustang

12-15-2011, 01:17 PM	#7 (permalink)
edub370 A True Z Fanatic Join Date: May 2011 Location: KCMO Posts: 3,458 Drives: 09 370z S/T 6MT Rep Power: 19	idk about the top speeds but a lot of exhausts rub the metal heat shield right behind the passenger wheel. i removed mine __________________ 09 370Z ST 6MT//Injen CAI//Greddy CBE//TP//TSW's//Swifts//Stillen lip//Whiteline sways 326whp/268tq

12-15-2011, 06:39 AM	#4 (permalink)
USMCASA A True Z Fanatic Join Date: Nov 2009 Location: NC Posts: 1,152 Drives: 09 370z CY M6 Rep Power: 17	a little info about your car would help diagnose this. is it stock? do you have hfc or aftermarket exhaust? how many miles are on the car?

12-15-2011, 10:54 AM	#5 (permalink)
tonybui A True Z Fanatic Join Date: May 2009 Location: Maryland Posts: 1,397 Drives: 09 Sports 6 Speed Rep Power: 426	My car is an 09 with 25k miles, the car has topspeed exhaust and everything else is stock !! I'm a noob with car, to me it doesn't sound like exhaust leak (as I imagine that it would sound different) I have the exhaust on the car for about 8k miles and never encounter this weird noise before until recently. I will try to get all the bolts tighten up What do you guys think is an alternative problem to this?

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