weird wining noise on decel sounds like its comming from the rear end.

A noise may make a high frequency "hoo" sound (harmonic) noise and its noticeable when coasting or decelerating, mostly around 60-65mph mostly the
noise is around that area

this is happening on my freinds car and was wondering if anyone has heard this or know what causes it and some of the remedys.

sounds basicly identical to described here

http://forums.nasioc.com/forums/showthread.php?t=1440709&highlight=rear+diff+noise

 

also he drove up here from tx and is wondering if this thing could possibly implode and strand him

 

Have you checked wheel bearings?

 

yes we have they are good/

 

.....

 

he is on the forum as well his name is seanthanq83

 

bump for more peoples opinions

 

What car is it? Make, model, year, miles, mods, these things might help you get some responses.

 

02 wrx. 120k miles. sti lateral links, lw flywheel, unibomer sexi rear end. rear subframe lockdown bolts. modded sti swaybar. all shifting bushings. changed tranny and diff fluid at 5k ago. plus numorous power mods but not sure they are really relivent to the problem.

 

also its only when under load. when clutch is depressed or in neutral and only when deceleration is occurring.

 

pinion gear in rear differential is my guess...

 

Well, the diff lockdown bolts WILL transfer more noise to the cabin. Unless there are metal shavings in the diff fluid I wouldn't worry about that being the cause of the noise.

 

What are some things we can do to rule out if its pinion gear or the lockdownn bolts r bad

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