Do any of you A4 tranny owners know how the 'torque management' feature works? Does it retard timing for a few milliseconds or is it more complex?

Those of you who have edited out torque management, have you experienced premature (low mileage) clutch slippage?

Thanks,

Dave :auto:

 

It is complex and I am sure someone will explain it beter but yes it does reduce timing durring the shifts. Part of the TQ managment remove is zeroing out these timing tables.

I have had it removed as completely as I am able with Edit for about 1.5yrs now and had no issues at all yet I only put maybe 20k miles on the car for a total of 46k. I just recently took it out of my Z71 also so if anything bad pops up I'll be sure to post about it.

 

In addition to smoothing out the shifts (preventing overrevs), TQ mgmnt also controls the advance and maybe even throttle during the RPM band around peak TQ to prevent excess stress on the tranny gears.

 

TTT

 

Do a serch in archive topics all kinds of threads posted

 

From my 2002 service manual:

Torque Management (TM) is a function of the PCM that reduces engine power under certain conditions. TM is performed for the following reasons:

1. To prevent overstress of the powertrain components.
2. To reduce engine power during certain throttle actuator control (TAC) system faults.
3. To limit the engine power when the brakes are applied more than approximately 40%.
4. To prevent damage to the vehicle during certain abusive maneuvers.

The PCM monitors the following sensors and engine parameters to calculate engine output torque.

- Air/Fuel ratio
- Mass Air Flow (MAF)
- Manifold Absolute Pressure (MAP)
- Intake Air Temperature (IAT)
- Spark Advance
- Engine Speed
- Engine Coolant Temperature (ECT)
- A/C Clutch Status

The PCM monitors the torque converter status, the transmission gear ratio, and the extended brake switch input in order to determine if torque reduction is required. The PCM retards the spark as appropriate to reduce engine torque output if torque reduction is required. The PCM also shuts off the fuel to certain injectors to reduce the engine power in the case of an abusive maneuver.

The following are instances when engine power reduction is likely to be expected:

- During transmission upshifts and downshifts
- Heavy acceleration from a standing start
- The brakes are applied with moderate to heavy throttle (with the traction system active).
- When the driver is performing harsh or abusive maneuvers, such as shifting into gear at high throttle angles or shifting the transmission from reverse to drive to create a rocking motion.

The driver is unlikely to notice the torque management actions in the first two instances. The engine power output will be moderate at full throttle in the other two cases. The PCM calculates the amount of spark retard necessary to reduce the engine power by the desired amount. The PCM disables the fuel injectors for cylinders 1, 4, 6, and 7, in case of an abusive maneuver.

 

fyi .........Torque Management is also on 6 speeds as well......

 

:iagree: also had my removed :D