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Whining noise at highway speeds

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Old Apr 8, 2003 | 06:24 PM
  #1  
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jvana350z
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Question Whining noise at highway speeds

has anyone found out what's causing the whining/wind noise at higher speeds???? its driving me crazy....
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Old Apr 8, 2003 | 06:38 PM
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It's the rear diff gears. Some people here keep proposing other ideas, but it's the diff. None of the other ideas make as much sense as that one does.

Desmo
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Old Apr 8, 2003 | 10:07 PM
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Thanks Desmo...
Anyone know how to fix this????
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Old Apr 8, 2003 | 10:20 PM
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I had a whine problem back in sept 2002. here is the post....


DIAGNOSIS: the backing plate behind my front passenger wheel housing was rubbing on the brake system. So whenever the car was in motion it sounded like a "whine" or a metallic fan scraping/turbine.

FIX: After driving the svc tech around several blocks and him driving back, he had me accelerate while the car was on the lift to see if the noise was isolated to the rear wheel, which i told him I thought was where the noise was originating. As i accelerated I noticed that the noise was not audible. So dominick went to the front of the car and rolled the passenger front wheel by hand and he heard the noise. After 1 minute of inspection he saw that the backing plate was making contact with the brake system, thus the fan like whine noise. He simply took a flat head screwdriver and made some extra space between the plate and brake system.

CONCLUSION:
Problem is gone and all i hear now is the beautiful exhaust note! Now i don't have to hide in shame as i pull up to a stop light. Let the fun begin!

Dated 09-11-2002 10:11 AM
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Old Apr 9, 2003 | 12:44 PM
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hmmm. did you get this sound all the time. I could only hear mine when i pass 65mph
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Old Apr 9, 2003 | 12:46 PM
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You are probably hearing the fuel pump. Not sure since only you really know what the noise sounds like. If you start noticing it only when you press on the gas, then that is most likely what it is. I know it annoys the living hell out of me whenever I get to around 80+ MPH. Anyway, just an alternate theory on what the noise could be.

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Old Apr 9, 2003 | 06:01 PM
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not sure if its the fuel pump. I let go of the accelerator and could still hear it. occasionally it'll go away for a couple seconds and then come back and I usually start hearing it at 65mph and up. Is it possible it could be the wind? I wish I knew whats causeing this.
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Old Apr 14, 2003 | 08:57 PM
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Not sure if I'm having the same problem or not. Noticed that when I get on and off the throttle I hear a whistle/whirring sound. Sounds as if its coming from under the hood. Doesn't seem to occur when the vehicle is stopped or in neutral. Drivetrain needs to be under some type of load. I'm having the dealer look into this. I'll post the findings.
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Old Apr 14, 2003 | 09:06 PM
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I am getting a sound thats more like a whistle and I only get it on windy days (SF BAY) when I am going 65-90
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