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Old 09-20-2013, 05:32 PM   #1
epfenninger
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All Steptronic owners, just curious...

Hey guys so I have a 325xi with steptronic and something I have always noticed is that if I'm at around 4k rpms or 4.5k and go over any little bump, ie manhole it shifts to the next gear. Everytime, never hesitates to do it, not that I really care, I'm just wondering if you guys are the same way or if it is just me
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Old 09-20-2013, 05:42 PM   #2
TheDeadner
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Its probably because your foot comes off the gas a little when you go over the bump.
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Old 09-20-2013, 05:44 PM   #3
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Hmm you think, but I can have it at 4500 and completely take my foot off and it won't shift, not till like 5k will it do that... That's very possible though
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Old 09-20-2013, 06:46 PM   #4
Avetiso
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It's possible that you lose traction for a fraction of a second (I have a pot hole not far from my house that does this to my car) and you're car thinks it's slipping and drops the power by shifting. My car is stick and doesn't do this, but when I hit that pothole, my DSC lights up very briefly.

Although I doubt that you lose traction every time you hit a bump, it's just a thought.
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Old 09-20-2013, 10:08 PM   #5
epfenninger
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Yeah I was thinking around a grand to do the swap... It may be a senior project for college I hope so, I would very much like it but while I'm in college that will not be happening haha
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Old 09-20-2013, 10:10 PM   #6
epfenninger
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Originally Posted by Avetiso View Post
It's possible that you lose traction for a fraction of a second (I have a pot hole not far from my house that does this to my car) and you're car thinks it's slipping and drops the power by shifting. My car is stick and doesn't do this, but when I hit that pothole, my DSC lights up very briefly.

Although I doubt that you lose traction every time you hit a bump, it's just a thought.
Interesting thinking and possibly correct, my dsc light doesn't come on but it's possible it's not significant enough for the dsc light to come on but enough for it to shift... Really good thinking though, thanks
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Old 09-25-2013, 01:03 PM   #7
epfenninger
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By the way I was playing with steptronic to see how good it was, I went up to 6k rpms and took my foot off the gas and it did not shift, which I find very impressive. I drove a 2013 Honda accord with paddle shifters and it shifted after 3k and would not let you go back down
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Old 09-25-2013, 01:58 PM   #8
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By the way I was playing with steptronic to see how good it was, I went up to 6k rpms and took my foot off the gas and it did not shift, which I find very impressive. I drove a 2013 Honda accord with paddle shifters and it shifted after 3k and would not let you go back down
It would have shifted automatically just before redline.
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Old 09-25-2013, 09:04 PM   #9
epfenninger
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It would have shifted automatically just before redline.
I know that, but drive other cars with semi automatic, my point is one the other cars you do not need to redline it for it to shift when you take your foot off the gas. I drive a lot of semi automatic cars cause of my job, just saying BMW and Audi have the best
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Old 09-26-2013, 01:08 AM   #10
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my car would do that, shot suspenion, mounts..
got all that changed, doesnt do it anymore
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Old 09-26-2013, 03:52 AM   #11
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Keep the BS posts out of this forum. OP has a problem with his car so just give replies that will help him solve them. Enough with the bickering...


OP, I have a step so don't worry. What I would do is just check out your DISA if you can. It opens up at 4k so maybe it's doing something to the car. Any help works.
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Old 09-26-2013, 07:51 AM   #12
epfenninger
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my car would do that, shot suspenion, mounts..
got all that changed, doesnt do it anymore
Ahhhh ok, that's what I'm thinking, it's hits hard so it shifts, I just got the car and it has 180k, I think it may be time to refresh the suspension soon, just don't really have the money right now. I guess do that as well as the trans mounts and motor mounts see how it goes. I'll buy new motor mounts and trans mount see how that goes
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Old 09-26-2013, 07:52 AM   #13
epfenninger
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Keep the BS posts out of this forum. OP has a problem with his car so just give replies that will help him solve them. Enough with the bickering...


OP, I have a step so don't worry. What I would do is just check out your DISA if you can. It opens up at 4k so maybe it's doing something to the car. Any help works.
Interesting too, but I would think it would do it without hitting a bump if the Disa was messed up. Maybe not every time but once in awhile without hitting a bump it would shift. I can really sit at 6k rpms without it shifting unless I hit a bump
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Old 09-26-2013, 09:55 PM   #14
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OP is the car in manual mode or sport when it shifts?

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Old 09-26-2013, 10:25 PM   #15
epfenninger
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OP is the car in manual mode or sport when it shifts?

Sorry Jake


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Manual mode
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Old 09-26-2013, 10:56 PM   #16
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Originally Posted by epfenninger View Post
Manual mode
Sounds like the transmission is getting bumped pretty hard when you go over the bumps. I would look at a suspension refresh along with trans and motor mounts.


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Old 09-27-2013, 11:47 AM   #17
epfenninger
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Sounds like the transmission is getting bumped pretty hard when you go over the bumps. I would look at a suspension refresh along with trans and motor mounts.


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That's what I was afraid of, i don't have the money for a suspension refresh currently since I'm in college, I also don't use it much since I'm in college, but I'll get on the motor and trans mounts. See if that makes a difference, thanks for the help
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Old 09-27-2013, 11:49 AM   #18
epfenninger
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my car would do that, shot suspenion, mounts..
got all that changed, doesnt do it anymore
Didn't see this till now, thanks, I'll get on that too
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Old 09-28-2013, 10:29 AM   #19
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Quote:
Originally Posted by epfenninger View Post
That's what I was afraid of, i don't have the money for a suspension refresh currently since I'm in college, I also don't use it much since I'm in college, but I'll get on the motor and trans mounts. See if that makes a difference, thanks for the help
Eat pasta for a few months lol.


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Old 09-28-2013, 11:36 AM   #20
epfenninger
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Eat pasta for a few months lol.


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Lol trust me I am
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