Weird Sound under acceleration

[theKnifeArtist]

i dont know when this started, cuz my sister borrowed the car and went somewhere an hour away, so when she came back i heard this. she said something was sounding different.
at first i thought it was something rubbing in the fender wells. but then i realized it might be something more serious. it could still be something rubbing. i hear it whenever im on the gas doesnt matter how much gas. it gets higher pitched if i go faster. once im off the gas, its fine. im gonna check it out tommorrow, but anyone got an idea?

 

[skim1040]

Can you only hear it when your moving? Or can you rev. it up and hear the sound?

 

[johnathan1]

You need to describe the sound better...

 

[theKnifeArtist]

if im in neutral, i dont hear it. ill give more details tommorrow when i check it out.

 

[MKIIINA]

check the turbo for shaft play?

 

[skim1040]

Turbo death whine?

 

[mkiiSupraMan18]

5sp or auto?

 

[futeki_supra]

squeeky speedo cable?

mine sounds like it is rubbing something, the fast I go the louder it gets,
when I rev. it doesnt happen, only when moving,
I need to lube the speedo cable

 

[Big Wang Bandit]

If its super loud its probably the turbo going out

 

[rumptis]

could be the Rearend.....Make sure you have fluid in both Tranny and Rearend.

 

[JustAnotherVictim]

Never let women drive the supra?

 

[theKnifeArtist]

so me and my buddy came to the conclusion that it is the rear end. there some oil on the bottom of it, i dunno if its rear oil or oil that traveled all the way from the engine area. how can i get to the fill hole?

 

[mkiiSupraMan18]

It's on the back of the 'pumpkin'... about halfway up.

it's like a 21 or something. Good luck.

 

[theKnifeArtist]

what kind of gear oil would i use..im pretty sure i got limited slip
i might as well add some fluid and see if it'll help, however much the damage is.

 

[rumptis]

do some searching on oil type...as for the limited slip you will need to get an LSD additive, just add that to the oil type you choose. you can pick that up at most Autopart stores

 

[theKnifeArtist]

so is there like a universal lsd gear oil in auto parts stores? or is there specific stuff i need?

 

[Electric S]

90W(80) API GL-5 LSD

 

[mkiiSupraMan18]

^ Just go to advance and tell them what you're doing... they wont steer ya wrong.

 

[theKnifeArtist]

does anyone know what size that fill bolt is? im at a lack of tools and am just gonna go to sears hardware and buy this one socket cuz this is irritating me. looks like its a 15mm, am i right?

nevermind, i got it. 24

 

[jdub]

If you're thinking about changing the LSD oil, make very sure you take the fill plug out 1st. BTW, the Ford 75W-90 LSD oil and Ford friction modifier works well...only use about 1/2 oz of the friction modifier to start with. If you get clatter, add a bit more till it stops.