Rear End Death whine?

oneslow3000gt · March 9th, 2011, 02:37 PM

Hey guys so I was out cruising around yesterday and while I was on the the freeway, Every time I gave it so gas I would get the loud Whine from the rear of the car...As I am new to RWD Car's anyone want to take a stab at what it could be? It only happens in third gear and up. It sounds like gears of some sort. thanks

P.S. the forum search engine sucks, Got so many non-related hits....

gripthenboost · March 9th, 2011, 03:17 PM

Your cars automatic or manual?

oneslow3000gt · March 9th, 2011, 03:17 PM

5 speed.

gripthenboost · March 9th, 2011, 04:01 PM

Mabe worn rear? U would have too pull it to inspect it

fogged306 · March 9th, 2011, 05:20 PM

You sure it's coming from the rear of the car? That sounds more like a transmission issue than a rear-end issue.

PsyAbe · March 9th, 2011, 05:28 PM

I have that same problem in my 98 Grand Cherokee though it's a 4wd. In my case it turned out to be a loose pinion

oneslow3000gt · March 9th, 2011, 05:43 PM

Originally Posted by fogged306

You sure it's coming from the rear of the car? That sounds more like a transmission issue than a rear-end issue.

Although I know the tranny Is pretty beat up, I am almost positive it is coming from the rear of the car.

so...pull the rear end and pop that sucker open, look for worn down, chipped or strait out missing gears then?
I guess this is going to be a weekend project then.

should be interesting. I Hate working on drivelines though.

fogged306 · March 9th, 2011, 06:11 PM

You don't have to pull the rear. Just pop the diff cover off and give it a look. Check and see what the oil looks like, see if there's any shavings in it or if it's real thin fluid. I'm not really all that good with rear-ends so I can't really tell you what to look for other than what you mentioned, but I will say that when you re-fill it, you need to add a friction modifier to the gear oil.

oneslow3000gt · March 9th, 2011, 10:53 PM

Well thats good news! Will do and thanks for the info

FastStang91Lx · March 9th, 2011, 11:20 PM

Silver oil will be a bad thing!

oneslow3000gt · March 10th, 2011, 01:10 PM

yea it will, I spun a bearing in my 3000gt, nothing like seeing a bunch of metal flakes in the oil.

HMERacing · March 10th, 2011, 02:02 PM

You can also take the driveshaft loose and check to see if the pinion has any obvious play. Check fluid levels too!

flyin ryan · March 10th, 2011, 02:08 PM

I would say if it were your ring and pinion(gears) it would make the noise at all speeds just increase volume with rpm.. The gears could be setup too loose/too tight or beyond the point and needing replacement.

March 9th, 2011, 02:37 PM	#1
oneslow3000gt Regular 1990 LX slow Join Date: Feb 2011 Location: san diego Posts: 59 iTrader: 0 reviews	Rear End Death whine? Hey guys so I was out cruising around yesterday and while I was on the the freeway, Every time I gave it so gas I would get the loud Whine from the rear of the car...As I am new to RWD Car's anyone want to take a stab at what it could be? It only happens in third gear and up. It sounds like gears of some sort. thanks P.S. the forum search engine sucks, Got so many non-related hits.... __________________ 1992 Mitsu 3000gt vr-4: DR650 + supporting: 465AWHP 1990 mustang lx 5.0: operation no squeak; check! operation bust the stock block; underway..

March 9th, 2011, 03:17 PM	#2
gripthenboost Hardcore Enthusiast 91 Mustang GT 1991 sliver GT Join Date: Apr 2010 Location: New York Posts: 1,213 iTrader: 0 reviews	Your cars automatic or manual? __________________

March 9th, 2011, 03:17 PM	#3
oneslow3000gt Regular 1990 LX slow Join Date: Feb 2011 Location: san diego Posts: 59 iTrader: 0 reviews	5 speed. __________________ 1992 Mitsu 3000gt vr-4: DR650 + supporting: 465AWHP 1990 mustang lx 5.0: operation no squeak; check! operation bust the stock block; underway..

March 9th, 2011, 04:01 PM	#4
gripthenboost Hardcore Enthusiast 91 Mustang GT 1991 sliver GT Join Date: Apr 2010 Location: New York Posts: 1,213 iTrader: 0 reviews	Mabe worn rear? U would have too pull it to inspect it __________________

March 9th, 2011, 10:53 PM	#9
oneslow3000gt Regular 1990 LX slow Join Date: Feb 2011 Location: san diego Posts: 59 iTrader: 0 reviews	Well thats good news! Will do and thanks for the info __________________ 1992 Mitsu 3000gt vr-4: DR650 + supporting: 465AWHP 1990 mustang lx 5.0: operation no squeak; check! operation bust the stock block; underway..

March 9th, 2011, 05:20 PM	#5
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	You sure it's coming from the rear of the car? That sounds more like a transmission issue than a rear-end issue.

March 9th, 2011, 05:28 PM	#6
PsyAbe Regular '92 LX Join Date: Dec 2009 Location: Kuwait Posts: 409 iTrader: 0 reviews	I have that same problem in my 98 Grand Cherokee though it's a 4wd. In my case it turned out to be a loose pinion

March 9th, 2011, 06:11 PM	#8
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	You don't have to pull the rear. Just pop the diff cover off and give it a look. Check and see what the oil looks like, see if there's any shavings in it or if it's real thin fluid. I'm not really all that good with rear-ends so I can't really tell you what to look for other than what you mentioned, but I will say that when you re-fill it, you need to add a friction modifier to the gear oil.

March 9th, 2011, 11:20 PM	#10
FastStang91Lx I Post Entirely Way Too Much 1991 Mustang LX 5.0 Join Date: Jan 2010 Location: Minnesota Posts: 5,572 iTrader: 2 reviews	Silver oil will be a bad thing! __________________ Point made in less than a few hours with minimal response. http://www.moddedmustangs.com/forums...ml#post4465184

March 10th, 2011, 01:10 PM	#11
oneslow3000gt Regular 1990 LX slow Join Date: Feb 2011 Location: san diego Posts: 59 iTrader: 0 reviews	yea it will, I spun a bearing in my 3000gt, nothing like seeing a bunch of metal flakes in the oil. __________________ 1992 Mitsu 3000gt vr-4: DR650 + supporting: 465AWHP 1990 mustang lx 5.0: operation no squeak; check! operation bust the stock block; underway..

March 10th, 2011, 02:08 PM	#13
flyin ryan Banned Join Date: Jun 2008 Posts: 3,387 iTrader: 0 reviews	I would say if it were your ring and pinion(gears) it would make the noise at all speeds just increase volume with rpm.. The gears could be setup too loose/too tight or beyond the point and needing replacement.

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