Help With S3 Rear Diff

[Tom Mineral Grey S3]

Hey,

Im hoping someone can help me, i want to try and find out what is making a noise on my car. Ive got a Audi S3 2001. When i turn right or left on full lock or just short of it, a loud scrubbing noise comes from the back somewhere. I only hear this noise on full lock and not when im driving normally in a straight line.
i think it might be the rear diff as a friend of mine had a similar noise and that was diagnosed as rear diff problem.

Any help anybody can offer would be much appreciated.

Thanks
Tom

 

[nick-barnes07]

i never ever got to the end of the problem with my old one a year or so ago, replaced the diff and haldex, drive shafts, and few other bits and none sorted it, does it feel as if the brakes are jamming on

 

[Tom Mineral Grey S3]

Not really mate, its feels sluggish when its making the noise but not like the brakes are sticking. Ill give anything a go though cheers

 

[nick-barnes07]

http://www.audi-sport.net/vb/showthread.php?t=64118&highlight=wheels+locking, most people have changed the haldex and it has solved it, i done that on my old car and it was the same

 

[nick-barnes07]

i have 2 spare haldex controllers and a spare diff if u need any bits, as i bought these for mine and it turned out not to be them,

 

[jojo]

Hi Tom, 2001 S3, so I take it you have ESP as standard on your car. Now pull the handbrake up to one notch and that will disengage the Haldex clutch totaly and try to make a turn in the car with full lock on steering at low speed to see if the sound is still there. This will at least maybe eliminate a few things.

 

[Tom Mineral Grey S3]

Thanks a lot lads, ill give it a go later on and see if it sorts it out.

Cheers

 

[thegoal007]

As Nick Barnes has mentioned, look at the link. I currently posted the last message on there I suggest you read it. The ones that have cured it by changing the rear haldex controller I suspect have earlier S3 models and/or have slightly different symptoms.
Tom Mineral, you sound like you have the exact same issue as mine and I presume yours is the 225 S3 engine too. It really does begin to point towards the esp/abs ecu.

 

[barters3]

I had the same problem.i had a small leak on the haldex unit. I fixed the leak and changed the haldex oil,this wil be ur cheapest bet to start off with.

 

[Paul-S3]

I had that exact problem and it was a fudged rear diff!!!

 

[thegoal007]

actually re-reading your post & reply I think yours is NOT the same problem as mine.
You hear noise on full lock - I dont
my rear wheels lock - your don't
one thing is common - this only happens on full lock .

 

[Mr V]

I don't want to be taking advantage of the situation but if you have a look in the classifieds under 'engine' i've got a brand spanking new diff for sale. You're not going to get new one for that price after it's gone...

 

[jonnywb]

I have an audi s3 2002 and i have haldex problem i think.I have no power to rear, it is not noisy and i have cheacked the fuse so does anyone know what it could be ?

 

[Tom Mineral Grey S3]

Thanks for all the info lads.

Just thought id add a last post to give the final outcome(sorry for the delay ) In the end ive had the the haldex oil and filter changed and luckily its sorted the problem completely.
I no longer have any noise off the back at all and its feels much better to drive, think i have gotten away quite lightly as from some of the past info it seems like it could have been much worse.

Great advise, saved me loads of £££££££

Cheers