forum.audiv8.com Foren English Audi V8 Forum Automatic shifting hard at 3rd and 4rd gear

I have a problem thats very annoying:
My aut. shifting really hard when the "lockup" is going in.

If I drive with the switsch on "Sport" than its working fine and the gearchanges are very smooth but puting the switch on "Ekonomi",
the whole car almost take a jump and BANGS the 3rd or 4rd gear with the lockup.

Another thing is that the car make this litttle jumping and vibration when turning fully to some side, Ex you are in a really tight corner and turn the steering wheel all the way, it starts to vibrat at the rear of the car when you trying to drive, This appears at low speed like 25km/h or samothing like that.

My ABS is a little weird to, beacuse every time I almost stop and stop the ABS start to work at 5 km/h. Its like when its slippery outside. It does that every time, feels on the pedal.

What to do?
I checked for faulthcodes and found 1 that sad ABS sensor, så I checked it at checked the wires. Try to erase it and it disaperd.
So I dont know if its still some wrong with it ore something alls.

And dont know if all this causes the problem I have but anyway..

Acke

Hey

I have found some solutions...
Toke done the ABS sensor and cleaned it up and re ajusted it.
Now it works fine without the vibrations in corners, it turn very smooth now.

The transmission got better when I drained the gearbox for 3 LITERS of ATF oil. The thing was before I got the stick that I drained the old fluid and put the same amount back of new atf back.
But it was abviose that it was way to much(The last owner did probebly just fill it upp without knowing how much).

So the harsch shifting is gone, if I drive on economi the hole time but if I switch from sport and back to economi on 80km/h its bangs.
Dont know way but its just do.

Best ragards
Acke

Question One: Did you ever check the transmission fluid level?
Correctly determining transmission fluid level is NUCLEAR SCIENCE on these cars
Do you have a transmission fluid dipstick? Audi deleted it in ’89 after owners regularly overfilled the transmission. If not, get one at your local Audi dealer. Part number should be 018321431D, cost around € 13.
In order to show the correct fluid level, the ATF needs to be at operating temperature (80degrees!). Drive the car around for ~10-15 kms to attain that temperature.
Park on a level surface, leave the engine running at idle speed and put the shift lever through all positions once or twice, then into “N” or “P”. Then use the dickstip….
The ATF level on the dipstick must be somewhere between the “min” and “max” markings, with the difference between min and max. being 0.6 liters. Too much ATF is as bad as not enough, so when there is too much fluid in the transmission, drain some.

BTW, the transmission is electronically controlled. You may want to have your Audi dealer check for fault codes in the transmission ECU.

Okey

You haven´t reed the last post I supose...
I have a stick and have controlled the faulth codes with vagcom..

The shifting was much better after draining the gearbox for some oil.

Best regards
Acke

wild guess: If the transmission shifts fine and only jerks around when the torque converter lockout is operated (this thing only works in 3rd and 4th gear), you most probably have a problem with the torque converter lockup. This thing is controlled by solenoid switches that might be faulty.
Unfortunatlely, I don`t have any idea how to fix this except take it to ZF (the transmission is made by ZF). Look up their service network here: http://www.zf.com/defaultz.asp?lang=1&id=1166.

I`m glad to own a 6-speed manual version - clutch replacements every 300 k km and that`s all....