Rear end HOOOOWWWWWLLLLLLLL

I believe my rear differential is telling me it's time for some attention.

 

I have replaced both rear wheel hubs/bearings within the last 2 months.

 

I drained the fluid *SO NASTY* and replaced it. I don't think it has ever been changed. There was a bit of metal sludge build up on the drain plug.

 

It hooowwwwllllllll's when decelerating. Never when accelerating and pretty quiet when cruising.

 

I think I'm going to start shopping for a used carrier unless anyone on here has had a GOOD experience with rebuilding this carrier.

 

Also, exactly what model is it? I believe mine is going to be a 3.27 ratio from what I have researched but have not found a definitive answer to exactly what model this is.

 

Thanks for any good advise.

Mileage? And by "decelerating" do you mean while gradually slowing down while coasting, or when you are applying the brakes?

When I needed to replace mine, I googled used r-160 rear diff subaru legacy.

Isn't our FD 4.11? It should have a 4.111 sticker on the back, right?

Mileage? And by "decelerating" do you mean while gradually slowing down while coasting, or when you are applying the brakes?

 

 

When gradually decelerating. Almost "floating" if that makes sense.

 

If I take my foot off the throttle it stops. If I accelerate it stops.

 

I guess now that I think about it, it does it when coasting at almost no load.

Auto 05-06 LGT is 3.27 from what I have read. OBXT is a different ratio.

 

Correct me if I'm wrong.

 

 

This is what I found online:

 

Outback, 2.5L (4 cyl), turbo, AT (3.59 ratio)

Outback, 2.5L (4 cyl), w/o turbo; Limited, AT (4.11 ratio)

Outback, 2.5L (4 cyl), w/o turbo; Limited, MT (4.11 ratio)

Outback, 2.5L (4 cyl), w/o turbo; exc. Limited; AT (4.44 ratio)

Outback, 2.5L (4 cyl), w/o turbo; exc. Limited; MT (4.11 ratio)

exc. Outback; (2.5L, 4 cyl), turbo, AT (3.27 ratio)

exc. Outback; (2.5L, 4 cyl), turbo, MT (4.11 ratio)

exc. Outback; (2.5L, 4 cyl), w/o turbo; Limited, AT (4.11 ratio)

exc. Outback; (2.5L, 4 cyl), w/o turbo; Limited, MT (3.90 ratio)

exc. Outback; (2.5L, 4 cyl), w/o turbo; exc. Limited; AT (4.11 ratio)

exc. Outback; (2.5L, 4 cyl), w/o turbo; exc. Limited; MT (3.90 ratio)

Outback, 2.5L (4 cyl), turbo, MT (4.44 ratio)

Outback, 3.0L (6 cyl, AT, 3.27 ratio)

It might be something wrong with the way one (or both) of the wheel hubs were installed then. That sounds like exactly what my car felt/sounded like when my rear hubs/bearings started going bad - the sound and vibration went away under acceleration and when breaking, but was very noticeable when coasting.

I replaced both rear hubs not long ago. I don't see a whole lot that can go wrong with installing them as they're a sealed unit.

 

Removing them, now that's another story. Really easy to ruin them removing them.