loud noise coming from rear when reversing

[SilviaSR20DET]

i think it maybe my differential making the noise because everytime i go in reverse i hear this pretty loud vibrating noise coming from the rear. i think it may be lack of oil in the diff but im still not sure. i have subfram spacers in the back so iono if thats normal. any help will be great.

[Munch]

I think i know what your talking about. My car does pretty much the same thing, except mine sounds more like a grinding noise. I dont really know what makes that noise...It might be because a lack of oil, or a ton of crap in the oil thats in there, thats what i figured it would be.

Mines been making the noise pretty much since i got the car....havent had the chance to change out the oil yet so i dont really know the situation in my diff. Hopefully i can soon though, cause it definately doesnt sound like a happy noise.

[redsuns3838]

ppl neglect their diffs...change that freaking oil it takes a half hr. its probly black with metal shavings everywhere. i know mine was..

[AuburnRyan]

rear brake pad hardware - common issue.

I bet you didn't spend the $20 for FACTORY hardware when you or the last owner changed those pads or had them done at midas ($20 lifetime pads...LOL)

[ka24deturbo]

^^ That's what I'm thinking! If it is a brake problem which vibrating sounds like it's a high possibility the original owner probably didn't have the rotors resurfaced. My cousin had the same problem on his Honda.

As for Munch: It's probably your Diff, change that oil today if you care about your car. LOL

[FaLKoN240]

I have an S14 diff in my car, and it was bolted in without the bushings, so basically a single bolt, surrounded by air. Needless to say when I backed up the diff would sway around, and smack the subframe. I recently got the S14 bushings to place inside the holes.

Now my car clunks when I upshift. . .:(

Makes my car seem faster though! :P