Really loud knocking in the rear when turning ever so slightly

[ericem]

Hey. I have a question. Sometimes when you make the slightest adjustment turning right the rear knocks. Not enough though that the suspension would chaange. Not sure what I should do. The rear CV's don't have broken boots. There is 1 CV that is still original in teh back on the right side (car has 307,000km) and there is 1 original bearing in the back as well. What should I look at? Now it is pretty rough just seems like it is soo loud for such a slight adjustment in the steering wheel. The car isn't even working in AWD so the rear wheels aren't being powered.

[aircraft engineer]

Sure sounds like something is LOOSE. Check all the bolts?

 

Look at the wheel HUBS (jack up the back and see if the wheels move when you try to jiggle them up-down and sideways) also rotate the back wheels with it up on the jack

 

Same pitch or changes at different speeds?

 

More pronounced one direction or the other?

 

There is a "carrier" for the rear suspension that's BOLTED to the body. You might want to try a frame jack and see if the carrier is "loose" bolts as we..

 

Lots of questions...

[idosubaru]

do you mean only a "slight" turn to the right or anything past that? in other words, does it do it with a slight turn and full lock or just the slight turn?

 

you're positive it's from the rear?

 

my guess is a rear wheel bearing.

 

with the wheel off i'd check all the hardware too - brakes, calipers, bracket and ABS sensor. make sure nothing is obviously loose.

[nipper]

Dont forget to check the universals on the driveshaft.

 

 

nipper

[Manarius]

The car is 15 years old and has many kilometers. It makes some noises. Old cars tend to do that. My guess is that it's probably nothing serious.

[lostinthe202]

The car isn't even working in AWD so the rear wheels aren't being powered.

 

 

What does this mean?

[idosubaru]

What does this mean?

means something, most likely in the transmission, is not allowing the rear wheels to be driven. there's a number of different ways this could happen so i'm not going to guess.

[four-fleet-feet]

Sometimes when you make the slightest adjustment turning right the rear knocks.

Does this only happen in Drive, or does it happen in Reverse, also? Are you driving a manual or an automatic? Any problems with the brakes? Any exhaust repairs? Was the vehicle recently repaired, just before the problem started?

 

My old truck did this annoying *clunk* backing up (ONLY when in reverse with the rear end swinging to the right, never to the left), and it was tracked down to a combination of loose exhaust hanger, a very loose emergency brake cable, and one idiot mechanic at the dealer forgetting to properly bolt up my driveshaft after a rear main seal repair under warranty.

 

With that many miles on, I'd look at everything as a safety precaution. One little thing could mean a big problem if it continues. After all, what's your life worth? Even more, what's your Subie's life worth?

 

Fix 'em, drive 'em, keep 'em...

[ericem]

Hmm. Well verified the problem. Front cv's. They are about to explode lol. One more boot broke on the front and I am guessing it is that one creating the issue. Seemed weird though. Sometimes it sounded like it was coming from the rear. Once my friend in the back verified. There was no noise in the back. I found all the parts I need so I should be good.

 

Reason why it is FWD is, because my transmission is ******* Going to get the new transmission, cv's, and all motor mounts, and rebuild the gaskets on the motor this spring. Should drive like new. All I need then is struts.