johnnyroper

while reversing off my drive on full left hand lock i have been getting a strange rotational noise and jolting feeling.

it seems to be coming from the o/s/f wheel it almost feels like i have got a flat tyre?

i have had a look at the suspension and all looks fine no worn bushes etc.

has anyone else experienced this if so what caused it?

or anyone have any ideas as to possible cause?

car is a 2004 wrx with standard suspension

cheers

scoobydog

Could be a driveshaft CV joint has failed?

Hope this helps.

johnnyroper

thanks for the reply
i have had a look cv boots in tact no abnormal play in joints.
and it only occurs in reverse so confused as to the cause.

any more opinions?

johnnyroper

update

only does after being parked for a while,once warmed up a bit noise goes

any ideas????????

finalzero

Mine did this today, I had the car on full lock on flat surface turning the wheel to the left as I reversed out, felt a jolt as if the front wheel had slipped or something.

I am getting it checked tomorrow, will let you know what I find out

Kerbstone

With the steering on full lock, a few things could happen:
-you may actually slide over one wheel, because it's turned so far in it doesn't follow the turning circle (I don't know of a better way to describe this...)
-the reason you hear this now may be weather related: colder or wetter.
-your center or rear diff may experience some difficulty with these sharp turns (especially when the oil is cold/thick), trying to compensate the rotational difference between the wheels/axles.

finalzero

Ah that explains it, I went out earlier to try and repeat the symptoms on some wet/icy surfaces in a local car park, had the slip on both sides on full lock and when the DCCD was engaged.

Just need to remember about the diff's and compensate as you say

johnnyroper

does yours only do it after being parked for a while and is then ok once warmed up for a bit?

and does it only occur when reversing?

vyore980

Did you get a resolution to this I am having the exact same problem

MrNoisy

iTrader: (28)

My local dealer confirmed this when I asked about a slight clicking noise when reversing on full lock from cold - just the diff, nothing to worry about they said.

vyore980

Thanks Bugeye_Scoob I might just get it checked for peace of mind.

vyore980

Went to my Subaru Mechanic and he told me it was Front Differential gone not good.

MrNoisy

iTrader: (28)

Somewhat bizarre mate - I'd have expected you to have a few more problems than just a slight noise if your differential has truly given up the ghost!

vyore980

I ask my mechanic and he said this is how they start to go but it will get worse over time hopefully covered under manufacture warrenty he said he never seen one go in the manual 6 speed gearbox.

MrNoisy

iTrader: (28)

Good luck mate and keep us posted as to how you get on.

vyore980

Will do fingers crossed it is covered.

vyore980

Just to let you know Center Diff is gone Subaru goin to replace under warrenty

bustaMOVEs

iTrader: (31)

first post maybe ur top mounts have worn, ive just had simlar problem, couple of extra washers helps

MrNoisy

iTrader: (28)

Very unlikely this would affect the car on full lock I'd have thought?
Extra washers where exactly btw?!

bustaMOVEs

iTrader: (31)

or could b drive shaft or cv joint as the boot dosent always need to split for it to be knackered.

and washer when u take top mount away from shock top bolt only has thread to a certain point, placed washer in the dead space

bustaMOVEs

iTrader: (31)

best thing to do is get it up on a ramp and check all the above cos it could be any of them, insted of shelling out for parts and finding out its summat else

bustaMOVEs

iTrader: (31)

nah mate i have bug jdm shocks and eibachs with my origional top mounts(blob). so a bit of washers for modding as they are not made for blob. all sorted now though

bustaMOVEs

iTrader: (31)

calm down mate, who diagnosed the problem??? then u jump on my post and confirm it. and jonny roper has NOT confirmed the fault yet!

MrNoisy

iTrader: (28)

Ahhhh.... - my sincere apologies, I misread the post further up as someone else had also started posting their issues as well.

Sorry mate, didn't mean to be so aggressive, tis the trouble when looking at this on a phone and not a PC.
Previous posts respectfully deleted

In regards to the knocking, in my experience it's very unlikely it would be so noisy just reversing it the problem was shocks though.

In that case, agree my best guess would be driveshaft, CV joint, then perhaps wheel bearing or worn hub.
One of my mates recently had a really horrible noise which was thought to be the bearing.
Thing was, because it had been left so long, he ended up having to replace both hub and bearing as the hub had been worn away by the knackered bearing

OP - can you confirm whether the noise get louder or stays the same depending on speed?