IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

Humming sound at ~40-45mph

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Old 06-19-19, 10:57 AM
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Gville350
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Originally Posted by Sin1UZFE
I have this noise that gets louder the faster I go from 45 and up. Replaced one bad wheel bearing. Got new tires. Balanced twice. Replaced front rotors and brakes. Replaced engine and tranny mounts. Had rims checked for bends. Replaced tranny filter and fluid twice. Replaced drive shaft center mount. Had drive shaft checked. Diff fluid changed. All pulleys and tensioners checked. However a similar noise presents itself when revving at idle. I'ma rev at 2500 rpm tomorrow morning and see if it sounds the same. Could be a pulley?
So is your noise issue coming from the engine compartment or the drivetrain? I guess the key is narrowing it down to the general source of the noise and we can work from there. Let us know you find out!
Old 06-19-19, 10:58 AM
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Sin1UZFE
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Originally Posted by Gville350
So is your noise issue coming from the engine compartment or the drivetrain? I guess the key is narrowing it down to the general source of the noise and we can work from there. Let us know you find out!
Not sure, sounds like the front
Old 06-19-19, 02:17 PM
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Originally Posted by Sin1UZFE
Not sure, sounds like the front
"Front", meaning in the engine compartment or the front wheel bearings?
Old 06-19-19, 02:26 PM
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Originally Posted by Gville350
"Front", meaning in the engine compartment or the front wheel bearings?
Suspected the wheel bearings but they are good. But lately wanna get a 2nd opinion

Last edited by Sin1UZFE; 06-19-19 at 05:42 PM.
Old 06-20-19, 02:04 PM
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Does the noise lessen or increase depending on which direction you turn? Read and watch the below for further wheel bearing info :

https://speedfinal.com/which-wheel-b...while-driving/
Old 06-20-19, 02:10 PM
  #51  
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Originally Posted by Gville350
Does the noise lessen or increase depending on which direction you turn? Read and watch the below for further wheel bearing info :

https://speedfinal.com/which-wheel-b...while-driving/
It doesnt, but 2 mechanics have already declared all but the right rear (which was replaced) good.
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