3-4 upshift flare upon full warm-up

[terbogoat]

It shifts beautifully until operating temperature is achieved, then it flares on the 3-4, normal acceleration. If I let up on the throttle when it is about to shift it is fine. If I lean on the throttle on this upshift it is fine as well. If I lock it in '3', then put it in 'D' when the time seems right, it shifts well.

I changed the fluid and filter a few thousand miles ago and found nothing bad in the pan. The fluid change did not help.

Is this likely an internal issue such as something sticking in the valve body?

Mike

Friday,13,January,2017,15:44:12:51993
VCDS -- Windows Based VAG/VAS Emulator Running on Windows Vista x86
VCDS Version: 17.1.1.0
Data version: 20170106 DS267.0
www.Ross-Tech.com




Chassis Type: 4A - Audi 100/A6 C4 (1992 > 1997)
Scan: 01 02 03 08 15 17 25 35
 
-------------------------------------------------------------------------------
Address 01: Engine        Labels: Redir Fail!
   Part No: 8A0 906 266 B
   Component: V6 2,8 2V MPI V6AC37 D0B  
   Coding: 00005
   Shop #: WSC 23151  
   VCID: 285F9A6CC8380201BD-12BA

1 Fault Found:
00560 - Exhaust Gas Recirculation System 
            27-00 - Implausible Signal
Readiness: N/A

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: None
   Part No: 4A0 927 156 M
   Component: AG4 GETRIEBE 01F    D72   
   Shop #: 0260002287  
   VCID: 306F720CF0E84AC165-4A3A

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 4A0-820-043.lbl
   Part No: 4A0 820 043 K
   Component: Klima-Vollautomat   D05  
   Coding: 00062
   Shop #: WSC 40201  
   VCID: 21498748AB02F349FA-2574

3 Faults Found:
00779 - Outside Air Temp Sensor (G17) 
            30-00 - Open or Short to Plus
00799 - Coolant Temperature Sensor (G110) 
            30-00 - Open or Short to Plus
00604 - Potentiometer Positioning Motor for Air Flow Flap (G113) 
            30-00 - Open or Short to Plus

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 4A0-959-655.lbl
   Part No: 4A0 959 655 
   Component: AIRBAG II  iP«PŸÿ…  
   VCID: 6CD7A67C1C40EE2119-1678

No fault code found.

End-------------------------(Elapsed Time: 02:12)--------------------------

 

[DrPeter]

Hello,

Is this likely an internal issue such as something sticking in the valve body?

- Could be? It is hard to say.... Given the age of the [01F] transmission, I guess it could be anything, seals, clutches (never had one open)???
Also I do not see any factory repair manuals for internal testing/repairs of these transmissions, so this maybe a difficult one to diagnoses.

I changed the fluid and filter a few thousand miles ago and found nothing bad in the pan. The fluid change did not help.

- Did you follow the repair manual exactly when filling the transmission and did you use the correct fluid for the vehicle? [VW# G 052 162]
Using the correct fluid and filling at the correct temperature can make a big difference. Even if the transmission has a [02] or [03] dipstick, see manual for details.

Here is a link to the Ross-Tech wiki pages where you can source the correct 'factory' information for this and other vehicles.
Official Factory Repair Information


What about swapping to a manual transmission?

Just a thought, hope it works out for you,

drpeter

 

[terbogoat]

Hello DrPeter and thanks for your thoughts.

I used Amsoil Multi-vehicle ATF which meets the G 052 162 requirements. Also, I used the correct dipstick tool and filled per the procedure described in The Bentley via VCDS.

It's an old car; the issue is not worsening and the work-around is easy so I'll probably just continue driving it as is.

Regards... Mike

 

[DrPeter]

It's an old car; the issue is not worsening and the work-around is easy so I'll probably just continue driving it as is.

-I can relate, I still have my 1996 GTI and it has its good and bad days..

drpeter