Engine/Transmission (1998.5 - 2002) 47re qestions

[PVanderlugt]

hello everyone, I have a question on the tc lockup on a 47re.

normal driving, shifts normal, it seems to stumble on tc lock-up. it almost acts like it desides to start locking the tc, rpm is starting to drop as lock up is engaged (maybe 150-200rpm). . , desides that it is not going to engage, rpm comes back up, and after a couple of seconds engages full lock up, rpm drops 600 or so. Once it locks up fully it does not drop out or hunt and works like it is supposed to. This seem to be more so under light throttle, under moderate throttle it seems to work better/normal. I guess is what my question is what determines when the tc needs to lock up, is it electrical, valving in the VB, is there an electical component that is acting up or is linepressure in the tranmission low??

transmission was just seviced and bands adjusted, made it shift better, but did not change anything with this problem



thanks for input

Pete

 

[LOtero]

you may want to do a search for noise filter, DTT sells it, i cant explain it real well but it may be what you need.

 

[PVanderlugt]

I checked into that, and it seems that was mainly for problems with the tc unlocking for no apparent reason driving down the road. my problem seems to be more about initial tc lock up. I don't seem to have any other locking/unlocking problems.

Thanks Pete