Hello,

After a bit of searching on different forums and sites and finding no answer, i want to ask you guys for your expertice.

I have an 01 A6 4.2 auto tranny.
The issue i am having with it is the following.

When the car is in motion and in gear, the front wheels skip and make a pounding noise. does not matter if you are going slow or fast, the faster you go that more frequently it makes this noise. You can definetly feel it when this happens, it shakes the whole car.
I know for a fact it only happens to the front wheels.
Also, when turning and you are FULL turn either left or right, it makes the same noise constantly, like if the CV boot on a car was messed up.
I have changed BOTH front drive axles to try and resovle the issue, but it neither got better or worse.

it does sound like this noise is coming from the transmission, i took the car to a general mechanic and he is the one that told me it was coming from underneath the car where the transmission is.
it almost feels like somehting is loose...

Anybody else experience this? or know what could be going on?
Im have not taken it to an AUDI expecialist mostly cause i have not had the time and i am thinkning it will cost alot of money to fix.
Any help or suggestions would help.

No oil change on tranny has been done
the car has 180K
It seems to shift into gears fine, but the same thing happens in all gears...

Thank you all for your help.

 

SOunds like your front diff is going bad. To test, disconnect one axle and spin the flange while keeping a hand on the transmission case. If the diff is bad you will feel it when the bad places in the gears mesh or when the bad spot on a bearing is crossed. Make sure it isn't one of your wheel bearings (but your mechanic would have caught that).

Good luck,

Bob

 

Bob,

Thanks for your reply.
I will deffinetly look into that.
i hope this doesn't sound like a stupid question, but is the front differential built in to the transmission? or is a seperate part all together?

Thanks
jose