2006 Z4 3.0si automatic

phil-simon · 12-20-2010, 11:29 PM

Although I am an experienced sports car driver (both stick and automatic) it's barely possible to not make the car jerk forward when you take off from a stop sign. Is this abrupt engagement of the automatic transmission on purpose to create the impression of performance or is my tranni s

crewed up? Or might it just need to be serviced?

b0bab0i · 12-20-2010, 11:31 PM

Slowly release foot off brake?

phil-simon · 12-20-2010, 11:39 PM

still. I have to very gently hit the throttle, especially when the car is still crawling. otherwise it jumps as if the tranni was in sports mode or something (when its not).

imz4n · 12-21-2010, 07:17 AM

Quote:

Originally Posted by phil-simon

still. I have to very gently hit the throttle, especially when the car is still crawling. otherwise it jumps as if the tranni was in sports mode or something (when its not).

We could always meet up somewhere and compare your car and mine. I have a 06 si with steptronic. Has the car been modded in any way?

tommiegun57 · 12-21-2010, 12:08 PM

Try Stop,shifter to left m, start off, go back to auto no lurch. Thats what the sales man told me.

Nhopkins1394 · 12-21-2010, 02:05 PM

I may have the same problem.
Kinda embarrassing.
In fact, even my wife called me on it....with a look...like, what are you DOING?

Maybe I need to put the key in the ignition and turn to the first stop for 20 seconds to rid the ECM of the "prior" driving memory. Think that will help?

Huz-Z · 12-22-2010, 06:57 AM

My 3.0si is a tiny bit jumpy off the mark, but I always assumed that it was just a character trait of the car; I don't find it troublesome.

Re the automatic transmission - can you slip it into manual mode while you are driving? So far, I've had the car stopped before slipping the gerabox into Manual, and then driving off.

Cheers!

Nhopkins1394 · 12-22-2010, 03:31 PM

I pull the shift level on my automatic to the left anytime anywhere.
It shouldn't hurt anything.
You do the same thing when you use the paddle shifters...you are putting the trans in manual mode on the fly.

Nhopkins1394 · 12-22-2010, 03:33 PM

Quote:

Originally Posted by tommiegun57

Try Stop,shifter to left m, start off, go back to auto no lurch. Thats what the sales man told me.

I may be imagining things but it seems that this just might have solved my lurch problem. I will monitor this next week and see if the lurch comes back.
Thanks!

Huz-Z · 12-23-2010, 08:23 AM

Thanks! I guess I was being overly cautious with my baby LOL!!!!

12-20-2010, 11:29 PM	#1
phil-simon Enlisted Member 5 Rep 39 Posts Drives: 2006 Z4 3.0si Join Date: Dec 2010 Location: Los Angeles iTrader: (0)	2006 Z4 3.0si automatic - question Although I am an experienced sports car driver (both stick and automatic) it's barely possible to not make the car jerk forward when you take off from a stop sign. Is this abrupt engagement of the automatic transmission on purpose to create the impression of performance or is my tranni screwed up? Or might it just need to be serviced?
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12-20-2010, 11:31 PM	#2
b0bab0i Major 24 Rep 1,033 Posts Drives: 03 TiAG z4 3.0i w/ hardtop Join Date: Feb 2008 Location: SoCal iTrader: (0)	Slowly release foot off brake?
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12-20-2010, 11:39 PM	#3
phil-simon Enlisted Member 5 Rep 39 Posts Drives: 2006 Z4 3.0si Join Date: Dec 2010 Location: Los Angeles iTrader: (0)	still. I have to very gently hit the throttle, especially when the car is still crawling. otherwise it jumps as if the tranni was in sports mode or something (when its not).
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12-21-2010, 12:08 PM	#5
tommiegun57 Enlisted Member 0 Rep 30 Posts Drives: Stratus Gray z4 i 07 Join Date: Sep 2010 Location: federal way Wa iTrader: (0)	Try Stop,shifter to left m, start off, go back to auto no lurch. Thats what the sales man told me.
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12-21-2010, 02:05 PM	#6
Nhopkins1394 Accountant, 1st Class 8 Rep 237 Posts Drives: 2006 Z4 3.0si Roadster, Black Join Date: Jul 2010 Location: Irving, TX where the Cowboys used to play! iTrader: (0)	Lurch forward at dead stop I may have the same problem. Kinda embarrassing. In fact, even my wife called me on it....with a look...like, what are you DOING? Maybe I need to put the key in the ignition and turn to the first stop for 20 seconds to rid the ECM of the "prior" driving memory. Think that will help?
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12-22-2010, 06:57 AM	#7
Huz-Z Brigadier General 851 Rep 4,057 Posts Drives: Z4 3.0si, 328 XDrive, X5 35i Join Date: Aug 2009 Location: Canada iTrader: (0)	My 3.0si is a tiny bit jumpy off the mark, but I always assumed that it was just a character trait of the car; I don't find it troublesome. Re the automatic transmission - can you slip it into manual mode while you are driving? So far, I've had the car stopped before slipping the gerabox into Manual, and then driving off. Cheers! __________________ Huz-Z BMW Z4 3.0si Roadster. Montego Blue Metallic. Premium and Sport Package.
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12-22-2010, 03:31 PM	#8
Nhopkins1394 Accountant, 1st Class 8 Rep 237 Posts Drives: 2006 Z4 3.0si Roadster, Black Join Date: Jul 2010 Location: Irving, TX where the Cowboys used to play! iTrader: (0)	3.0si automatic manual mode I pull the shift level on my automatic to the left anytime anywhere. It shouldn't hurt anything. You do the same thing when you use the paddle shifters...you are putting the trans in manual mode on the fly.
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12-23-2010, 08:23 AM	#10
Huz-Z Brigadier General 851 Rep 4,057 Posts Drives: Z4 3.0si, 328 XDrive, X5 35i Join Date: Aug 2009 Location: Canada iTrader: (0)	Thanks! I guess I was being overly cautious with my baby LOL!!!! __________________ Huz-Z BMW Z4 3.0si Roadster. Montego Blue Metallic. Premium and Sport Package.
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