Weird noise at 80mph and above
#1
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Hey guys,
I am hearing a weird noise at speeds 80+mph. It sounds like a humming or whistling noise. I know its not the transmission because I put it into neutral and it didnt go away. I noticed it did go away once I decreased my speed below 80mph. Anyone have an idea?
I am hearing a weird noise at speeds 80+mph. It sounds like a humming or whistling noise. I know its not the transmission because I put it into neutral and it didnt go away. I noticed it did go away once I decreased my speed below 80mph. Anyone have an idea?
#2
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Might be a bearing going bad.
I had something similar, it was from about 45 - 75 mph. Replaced the left front wheel bearing(I had hit a curb) and it went away. I actually thought it was some tire noise, but it made a droning noise.
I had something similar, it was from about 45 - 75 mph. Replaced the left front wheel bearing(I had hit a curb) and it went away. I actually thought it was some tire noise, but it made a droning noise.
#5
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Originally Posted by Alberto
Tires feathering, wearing out unevenly? Check the front tires, sounds like it to me. At first I thought your diff was whining but if you put the car in neutral and it stayed its not that...
Last edited by 97supratt; 03-14-2006 at 12:01 PM.
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#8
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Originally Posted by barthelb
Maybe they didn't mount the tires in the correct rotation or worse put a rear tire up front with a front tire?
#10
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Originally Posted by plumpzz
Is it mechanical noise or is it like wind creeping in thru holes?
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#11
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I have a whining noise from my diff at about that speed. If i let go of the gas it will stop, but if I hold the gas at around 80mph it will whine the whole way. Im not really concerned about it though. Should i be?
#12
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Originally Posted by shifty711
I have a whining noise from my diff at about that speed. If i let go of the gas it will stop, but if I hold the gas at around 80mph it will whine the whole way. Im not really concerned about it though. Should i be?
#14
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Originally Posted by 97supratt
Hey guys,
I am hearing a weird noise at speeds 80+mph. It sounds like a humming or whistling noise. I know its not the transmission because I put it into neutral and it didnt go away. I noticed it did go away once I decreased my speed below 80mph. Anyone have an idea?
I am hearing a weird noise at speeds 80+mph. It sounds like a humming or whistling noise. I know its not the transmission because I put it into neutral and it didnt go away. I noticed it did go away once I decreased my speed below 80mph. Anyone have an idea?
Sorry to hear you are having problems like this so early in such a new car.
Unfortunatly, its a roll of the dice that seem a little too common.
![](https://my350z.com/forum/images/smilies/icon22.gif)
#15
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Originally Posted by Hydrazine
I had a very similar noise (howling) in my 2004 G35 tranny even when the clutch was pushed in. Neutral didn't make a difference. They said it was some type of brass thrust bearing going out. Dealership replaced the tranny and the noise is gone, but I don't like the new tranny. Shifting is chunky and somehow... not symmetrical.
Sorry to hear you are having problems like this so early in such a new car.
Unfortunatly, its a roll of the dice that seem a little too common.![](https://my350z.com/forum/images/smilies/icon22.gif)
Sorry to hear you are having problems like this so early in such a new car.
Unfortunatly, its a roll of the dice that seem a little too common.
![](https://my350z.com/forum/images/smilies/icon22.gif)
![](https://my350z.com/forum/images/smilies/icon38.gif)
#17
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Originally Posted by 97supratt
Its mechanical for sure. Its a weird humming, rotational noise. I really think its my diff. I'll have nissan check it out when I take it in for a trans replacement this week. ![](https://my350z.com/forum/images/smilies/icon14.gif)
![](https://my350z.com/forum/images/smilies/icon14.gif)
#18
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Originally Posted by Z CRUZN
Bingo - I'll bet it's your diff. If the backlash on the shims is loose, it'll make the sound you're describing. The diff will run cooler that way however. I had it set up that way with my 350evo 3.9 install.
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#19
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My old diff was howling, like a wooo wooo woooo at about 80 when there is no throttle applied, with your mileage it would seem not likely but the symptoms you have seem like that is your diff.
Originally Posted by 97supratt
The backlash on a stock diff would be out of specs? I hope not, lol
. It started recently, its very weird but i'm sure its my diff.
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