Gearbox problem

[RS6Fan]

My RS6 Avant has covered 31k miles, 20k of that with the MTM chip. I am having two problems with the gearbox, first is after the gearbox has dropped into 2nd on slow acceleration, and then you floor it there is a sensation exactly like a slipping clutch. Is happening more and more, torque convertor perhaps? Also on the highway when using kickdown to drop one gear, there is an occasional clonk from the rear diff area? Wonder if my gearbox is shot?

[quattro]

Did you change/check the oil in the gear box?

[RS6Fan]

The car was in for a service 1000 miles ago, I presumed they would have checked it. I'm taking it to the dealer this afternoon for them to drive it and see what the fault is.

[quattro]

Originally posted by RS6Fan
I presumed they would have checked it.

Don't!

A friend has his Hohenester Stage II in and asked specifically for the oil change/check, and he's now doing that on a "regular" basis i.e. when servicing.

[RS6Fan]

Just been to my dealer who has booked the car in to have the gearbox oil replaced (Audi used to specify this was changed every 40000 miles on their cars, now it's never changed!)

Hopefully this will cure the problem, if not they will fit a new gearbox.

[quattro]

Exactly, it's not on their list of things to do so you can't blame them.

Let us know if the problems disappear, they did on my friends.

[RS6Fan]

Thanks quattro, did your friends car have the same problem as mine? I'll let you know once the car has had the oil changed on 18 October.

[trex]

i think i am experiencing the same problem only my rs6 is not chipped

my post:
http://www2.rs6.com/forum/showthread.php?threadid=5044

[audirs6sport]

I am experiencing the same problem. (stock & mod) It's been like this since day 1 when I bought my car. Have you tried bringing the car in for service?

[gjg]

first is after the gearbox has dropped into 2nd on slow acceleration, and then you floor it there is a sensation exactly like a slipping clutch.

same problem here from day one - actually when downshifting from 3 to 2, no throtle, the time between gear change on downshit is so long engine rpms drop to idle ......

[audirs6sport]

Any solutions yet???

[trex]

*bump

[RS6Fan]

Dealer did a gearbox oil change last Monday. Done 1000 miles and the slipping appears to have gone, but the occasional clonking is still there. Could need a new box I think

[Bauer]

Gearbox and rear diff are the weakest items on these cars. The gearbox should really have a larger dedicated radiator and the rear diff should just have one. The bolted on heat sinks don't really do the job.

I have a rear diff hum when I am on the power. Lazy a$$ dealer says they can't duplicate the problem. Funny, my wife even complains about the noise and they cant find it???? I have had no gearbox problems to date though.

Cheers,

[audirs6sport]

Yup :D They state that "vehicle operating to factory specification at this time." However, the problem just pops right back up the moment you drive away from the dealer :w: