Well ever since I got the car (about 4K ago) I have been hearing this whining noise coming from what I thought was the rear. So I rebuilt it, Installed new bearings, seals and a Tru Trac and I still have this noise. As speed increases the noise gets louder. When I let off the gas its still there but it sounds a little choppy. But the thing that leads me to think it’s not the rear is with I put the car in neutral the noise goes away???? I figure if it’s the rear end it would be there all the time and would have gone away when I rebuilt it anyways. And the sound sounds like its coming from directly under me. Anyone have any idea of whets going on with my car???

 

TTT, No one has anything to say on this???

 

Wow this sucks....... No one can take any kind of guess at whats wrong with my POS 4L60E!

 

Yokes, U-Joints, how do they look?

 

Last time I changed my oil I still had the noise and they still looked good

 

Did you change the pinion bearings? Does the noise come and go if you get on and off the throttle?

 

Remove the drive shaft and check the ujoints.
One or more could be siezed.

 

Placing the car in neutral would not eliminate the rear , When I had my mustang it had a while under acceleration and when you get off and would go away in neutral because theres no load , in my case it was the pinion depth was off just a little rear ends are real tricky just a few fractions off and you have noise ,

 

Man I think I just heard an echo!

 

yep! just worded differently lol Im notorious for repeating my self and others lol

 

No !

 

Ill check the U-Joints again. And yes I changed the pinion bearing cuz thats what went bad with the thing in the 1st place.

 

No when I get off the throttle it's still there it just sounds a little choppy. But when I put the car in netural it's dead quiet

 

I'm not saying that it's not in the trans but I would pull the diff cover and look for metal on the magnet. Are you running an after market gear? This could be a problem if it is not set up properly. Backlash, pinion depth, and the wear pattern are all very critical as I believe someone else has already stated.

 

The choppy sound is what makes me think its a differential setup issue , The reason it feels sounds choppy is the load changes up and down when you let off the throttle due to drive train drag through the tranny there is none in neutral so its close to having just the driveshaft alone little to no drag , Though like vince I cant say its definatly not the tranny but Im betting on the differential .

 

I have the exact same problem and everybody is telling me have my rear looked at...so i have to agree with these guys and suggest the rear..

 

God damn it! I just put $700 into this freekin rear! If it needs to be replaced again im going to kill my self!

 

Dont do that ! It will be ok worse come to worse I drove my mustang two years with it whining in the rear and nothing died except a few subwoofers .
"whats that noise, Oh nothing the music isnt loud enought" lol