need help, high pitched humming noise or winding noise...

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c32c7
Posts: 62
Joined: Fri Feb 06, 2004 3:49 am
Car: Kouki S14

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well i have a high pitched humming or winding noise coming from my car... what could it be? sounds like rally turbos.

it sounds like its coming from the back of the car, from under, so somewhere b/t my transmission and diff...what would cause that?


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Warped
Posts: 700
Joined: Fri Mar 21, 2003 6:40 pm
Car: 1993 240sx coupe - 2000 Audi S4 Stage 3

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have you checked your diff fluid or is it leaking.both transmission and diff can make noise.manual or auto?do you hear the noise while driving or at a stop reving the motor

c32c7
Posts: 62
Joined: Fri Feb 06, 2004 3:49 am
Car: Kouki S14

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manual, no leaking anywhere, haven't checked the fluids yet, but the LSD oil was just changed maybe 3months ago. it only happens when driving, and even if i barely touch the gas, it starts humming instantly.

my friend's friend is a mechanic and says that this is caused by putting an aftermarket LSD in there and not changing the bearings? im not sold on that story but who knows. figured i'd ask

i have an ATS carbon LSD, don't think that makes a difference.

also, another strange sound/vibration, only happens for a few minutes after the car's been sitting a while and drive somewhere, when i come to a stop, i feel a vibration in my shifer and hear a "wahhhh" sound. the vibration feels more like something is rubbing. so this leads me to think its the transmission, but the humming sound comes from the rear of the car.

i'm going to call a few shops and try to make time to have things checked out, but any input helps.
Warped wrote:have you checked your diff fluid or is it leaking.both transmission and diff can make noise.manual or auto?do you hear the noise while driving or at a stop reving the motor

180fan
Posts: 7799
Joined: Sat Dec 14, 2002 12:16 pm
Car: 89 fastback

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sounds like bearing issues to me. Find out if it's coming from the diff or hubs.

kineticniwa
Posts: 31
Joined: Sun Sep 08, 2002 10:48 am

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same thing happened to my car. i would hear the noise coming from the transmission. and when it's in idle i hear the rumble grinding like noise like it came from hell. so i drove it awhile like that, then i got on the freeway, hears something snap. then my car shuts off, then i pulled over, starts it back up again, starts, BUT it dies out in neutral and didn't want to move in any gear. what is the solution??


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