Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X3 (E83) Forum
Fluid Motor Union
User Name
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management

LinkBack Thread Tools Display Modes
Old 08-28-2012, 04:25 PM
Join Date: Aug 2012
Location: UK
Posts: 1
Dalaipour is on a distinguished road
Unhappy X3 2:0 Diesel - 30-50mph hesitation problems


When travelling in 2nd, 3rd, 4th and 5th at approx 30-50mph I can feel a hesitation in the accelleration of the car..sometimes quite profound but at other times hardley noticeable.

I have recently had a new turbo and fuel filter

Any ideas anyone as it is now getting frustrating?

Reply With Quote

Sponsored Links

Old 09-26-2012, 05:47 AM
Join Date: Mar 2012
Location: Africa
Posts: 1
Stickydonkey is on a distinguished road
I've had this acceleration/deceleration hesitation for some time (few months) and been following and reading a few forums about the topic. I see here that some recommend the O2 sensor. I found it to be the fluid in the Transfer Case. Its supposed to be BMW Lifetime fluid (HAHAH). Had mine changed yesterday by a Gearbox (transmission in US) specialist. They replaced the fluid with the proper BMW one (Techron 3?) and reset the "sensors" that measure the viscosity, as read on other forums. This most definitely resolved this for me. The acceleration and deceleration is very smooth.

Whats happening is there are about 6 or 8 clutches in the 4x4 transfer case, always adjusting the traction between 50/50 and 80/20 between front and back. When you pull off, its in 50/50 ratio front/back, and over a certain speed, like maybe 60km/h (2nd gear ?) the ratio starts changing and the various clutches start engaging/disengaging and this is what you feel when they engage or disengage uncleanly. I believe the fluid starts to break down and the viscosity changes and the sensor can only auto calibrate to a certain amount and then there is trouble, which we feel. So, changing the fluid (correct viscosity) and resetting the sensor, the clutches can operate correctly and smoothly again...
Reply With Quote


acceleration hesitation

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 09:55 PM.
vBulletin, Copyright 2021, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.