Engine/Transmission noise?
#1
Registered Member
Thread Starter
Engine/Transmission noise?
I've had my used 2008 G37s Coupe w/106K for a couple of years now, and maybe it's always been this way, but my old age is getting tired of the droning sound at speeds of 70-80mph. I used to own a 2003 G35 and don't recall it being that noisy. I measured about 79-80 db with a sound meter on my phone; about 50 db at idle. The droning sound increases as I increase speed. At idle is sounds fine and isn't sputtering or anything. Haven't had any exhaust work done or any performance mods, to my knowledge; everything looks to be original. Anyone else experience something similar? My brother rode in the passenger seat and seems to think it might be something with the AT, as it seems to vibrate from that area. Any ideas, before I take it to Infiniti? Also, if you have a 2008, maybe you could measure the sound db at that speed and tell me how yours sounds. Thanks!
Update 5/18/17
I've noticed that the noise...which sounds like the engine revving hard with a low frequency hum...is louder when driving straight or veering left. When I veer right, on a curve, it's quieter. Would the driveshaft have this effect? Or might it be the wheel bearing?
Update 5/18/17
I've noticed that the noise...which sounds like the engine revving hard with a low frequency hum...is louder when driving straight or veering left. When I veer right, on a curve, it's quieter. Would the driveshaft have this effect? Or might it be the wheel bearing?
Last edited by spinn; 05-18-2017 at 10:17 PM. Reason: Update
#4
Registered User
iTrader: (3)
I have an 08 but all of my exhaust mods would skew the results for a recording. I also vote tire noise, especially if it gets louder while going faster. If not, you could be on to something with the driveline guess. My roommates driveshaft on his G fell out of alignment or balance and caused a noise/vibration. He just turned up the music and got used to it, that was like 6 months ago.
#5
Registered Member
Thread Starter
I have an 08 but all of my exhaust mods would skew the results for a recording. I also vote tire noise, especially if it gets louder while going faster. If not, you could be on to something with the driveline guess. My roommates driveshaft on his G fell out of alignment or balance and caused a noise/vibration. He just turned up the music and got used to it, that was like 6 months ago.
#6
Registered User
iTrader: (3)
Funny you ask, we talked about it last night in the garage. It ended up being his driveshaft/midshaft bearing or something of that nature, he had it replaced and ended up being about $600 parts and labor at an import specialist shop. The dealer will rape you for probably twice that.
#7
Registered Member
Thread Starter
Funny you ask, we talked about it last night in the garage. It ended up being his driveshaft/midshaft bearing or something of that nature, he had it replaced and ended up being about $600 parts and labor at an import specialist shop. The dealer will rape you for probably twice that.