An introduction...and a question on transmission/overall reliability.

[Pack66]

Mark,
I've done quite a bit of research on this and other forums. I believe this thread had quite a bit of info. Specifically post #59 perked my interest:

chilliwilli
Chillin' like a villain
Join Date: May 2005
Location: County of Kings
Posts: 1,413



Quote:
Originally Posted by dinan e39

...

chilli, it's total BS that the dealer is telling you it has anything to do with a performance motor. it's all tranny related. we on the e39 board have discussed this problem at length and i ended up replacing my tranny (e39 540i Touring w/ 120K miles at time of replacement). good luck with getting satisfaction.

I guess what they meant was that it's inherent to the performance models. I had the same issue with my previous 4.6iS at around 50K miles...had the Dinan S2 system installed and it was still present but not as bad. My current 4.6iS was purchased at low miles and experienced the rough downshift as early as 40K miles. I recently rebuilt the trany and installed updated oem torque converter @ 70K...it's still present!

I don't understand why they can't develop a similar remedy as they did for the 2004+ V8's...perhaps if we start a petition

I guess to clarify my question, is this correct? Were they able to correct the issue with 04-06s but not the earlier models?