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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Jb3 steptronic problem



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      04-04-2011, 10:07 PM   #1
jetblack07
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Jb3 steptronic problem

Currently picked up used jb3 not completely sure what version but its the latest pnp and i have dci currently running map 3 with 93 oct. The problem is when launching the car at the top of first or second with dtc completely off (4 second hold) it feels like dtc is still cutting throttle. The car just falls on its face once it loses traction...wtf. After that it catches and then shifts and pulls like a freight train. Any ideas?


Ryan

***********fixed....didn't realize that the car shifted on it own at redline in manual mode and I was shifting the steptronic the same time the ecu was shifting and was going from 1st to third gear**************

Last edited by jetblack07; 06-24-2011 at 12:01 AM..
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      04-04-2011, 10:30 PM   #2
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ttt
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      04-04-2011, 10:34 PM   #3
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Hold the button down till the wheel spin icon comes up.

Also, dont hold the petal completely to the floor. You want it to shift around 6.3-6.5k, you dont make any power after that
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      04-05-2011, 07:17 AM   #4
jetblack07
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My traction control was completely off. Triangle with arrow around and exclamation point in the middle. This happened numerous times.
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      04-05-2011, 07:20 AM   #5
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Quote:
Originally Posted by JayKay335i View Post
Hold the button down till the wheel spin icon comes up.

Also, dont hold the petal completely to the floor. You want it to shift around 6.3-6.5k, you dont make any power after that
None of what you said even came close to answering my question.
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      04-05-2011, 10:07 AM   #6
Beemw335
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Quote:
Originally Posted by jetblack07 View Post
None of what you said even came close to answering my question.
He actually did..... You only turned off dtc... You NEED TO HOLD IT until the dsc symbol pops up(circle with a triangle in it)
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      04-05-2011, 10:14 AM   #7
jetblack07
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Quote:
Originally Posted by Beemw335 View Post
He actually did..... You only turned off dtc... You NEED TO HOLD IT until the dsc symbol pops up(circle with a triangle in it)
Ummm.....i just said that i hold the button down until i get the triangle with exclamation in the middle of it.
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      04-05-2011, 10:15 AM   #8
jetblack07
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Quote:
Originally Posted by jetblack07 View Post
My traction control was completely off. Triangle with arrow around and exclamation point in the middle. This happened numerous times.
Please read....
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      04-05-2011, 10:34 AM   #9
JayKay335i
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Maybe you're fuel pump is failing.

Dont be rude.

Go scan for codes.
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      04-05-2011, 12:48 PM   #10
jetblack07
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Not being rude. Thanks for your input. The fuel pump is brand new fuel with less than 500 miles on it. Sorry if I came off that way. I just got frustrated since I posted the info. and thought I was pretty clear.
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      04-05-2011, 12:52 PM   #11
Beemw335
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Lool ok smart ass, be rude when people tey to help you...

Umm isnt it obvious why your loosing power, your spinning the read tires!!

Btw this has absolutely nothing to do with your tittle. Jb3 stepteonic problem??? Wtf your loosing traction how is that a steptronic problem??
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      04-05-2011, 02:05 PM   #12
jetblack07
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Quote:
Originally Posted by Beemw335 View Post
Lool ok smart ass, be rude when people tey to help you...

Umm isnt it obvious why your loosing power, your spinning the read tires!!

Btw this has absolutely nothing to do with your tittle. Jb3 stepteonic problem??? Wtf your loosing traction how is that a steptronic problem??
Sorry for coming off like a duech (spelling?) but I've had a long couple of days. Been at the hospital since yesterday morning with my daughter. She is ok but still been a little overwhelming. Let me be a little more clear. If I launch the car and it starts to spin it feels like the traction control is taking over by cutting the throttle...traction control is all the way off. I put jb3 steptronic problem as the title cause I figured someone may have had similar issues and could chime in. Thought maybe the AT with steptronic and jb3 addition could be related to my issue. Oh yeah...no need for name calling....and " Isn't it obvious why your loosing power,your spinning the rear tires"....WOW....

Last edited by jetblack07; 04-05-2011 at 10:30 PM..
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      04-05-2011, 02:15 PM   #13
JayKay335i
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Chances are its not a steptronic problem.


If you want an answer you should be data logging petal vs throttle position.

Or just listen to the fact that power falls on its face in the higher RPMs. Shift earlier.
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      04-05-2011, 04:19 PM   #14
jetblack07
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Going to log. Thank you and sorry again if I came of like a jerk...I've seen so many threads over the years that don't get answered properly becuase people don't fully read the original post or because people who don't really know what they are talking about chime in.

Last edited by jetblack07; 04-05-2011 at 10:33 PM..
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