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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Steering causing engine surge



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      04-27-2017, 02:34 PM   #67
Sweatyandreadyb
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I have literally tried everything, got the DME updated to the latest software and new spark plugs..... Talked to the dealer and they said it was a known problem and BMW is aware of it. So no fix as of now. Im dealing with it for now though, but really would like a permeant fix. Let me know what your indy say's.
Will do, any word on if resetting those adaptions will help?
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      04-27-2017, 02:42 PM   #68
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It has to be a sensor that failed or a software issue. My car just developed this issue (idle rpm surging during tight turns) four or five months ago. My car has always had a slight increase in rpm when coming to a stop when the air conditioning is running. The idle speed rpm surging only happens with tight low speed turns, like pulling into a parking space. It doesn't matter if the air conditioning is on or off. Has anyone removed their tune to verify it is not the cause? It seems like this issue started when I transitioned from Cobb to MHD, I could be wrong.

I am really interested to hear what your Indy has to say.
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      04-27-2017, 06:29 PM   #69
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Quote:
Originally Posted by JB4N View Post
I have literally tried everything, got the DME updated to the latest software and new spark plugs..... Talked to the dealer and they said it was a known problem and BMW is aware of it. So no fix as of now. Im dealing with it for now though, but really would like a permeant fix. Let me know what your indy say's.
Will do, any word on if resetting those adaptions will help?
They might help a little, but I don't think that will make much of a difference. I agree with Miami, it has to be a sensor or something. I have removed the tune and the problem still persist.
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      04-27-2017, 09:30 PM   #70
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Tomorrow is the day hopefully I'll have answers that I can share with you all. I'll mention sensors, the guys I use will let me sit and talk to them for hours and just pick their brains. (No charge) any way I am not tuned never have been and I have no mods other than an axle back exhaust. Today I was at a drive thru and noticed it if I turned the wheel and left it there it would surge up and down. I put it over in M and shifted up to 2nd and had absolutely no issues. Not sure what that means but am going to mention it tomorrow. Keep your eyes open I'll post something about my Indy experience.
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      04-27-2017, 09:54 PM   #71
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Also doing some research, has anyone looked into it perhaps being a power steering issue, like a pressure switch or anything there? I know imprezas have been known to have erratic surging when the power steering acts up. Just throwing ideas out there.
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      05-01-2017, 01:29 AM   #72
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Did your Indy find out what is causing the steering rpm surge?
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      05-01-2017, 05:10 AM   #73
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So Indy has found a couple things, the steering surge is almost def a programming issue, but we cant be sure yet due to finding that my entire belt system being messed up. Turns out my Harmonizer was wobbling, causing other pulleys to be thrown off, more than likely means nothing for the RPM surge at turning but need to have it fixed to be sure. If problem continues, I have found a shop that will reset adaptations and dig around the programming. Ill keep you updated.
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      05-31-2017, 08:39 AM   #74
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Still gotten nowhere. We are looking into VANOs issues, due to me now getting Hiccups while at 60mph. JB4N have you had any of these issues as well?
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      05-31-2017, 10:32 AM   #75
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Quote:
Originally Posted by Sweatyandreadyb View Post
Still gotten nowhere. We are looking into VANOs issues, due to me now getting Hiccups while at 60mph. JB4N have you had any of these issues as well?
I have had none of these issues, just the steering wheel surge on low speeds.
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      05-31-2017, 10:33 AM   #76
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Still gotten nowhere. We are looking into VANOs issues, due to me now getting Hiccups while at 60mph. JB4N have you had any of these issues as well?
I have had none of these issues, just the steering wheel surge on low speeds.
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      05-31-2017, 02:06 PM   #77
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I've been having this same issue. I tried doing the load controller adaptations rest, but that didn't seem to solve the problem. It would be awesome if someone can pin point what is causing this.
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      07-06-2017, 08:38 PM   #78
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Got to bump this.

I can't believe there hasn't been a solution to this yet. Seems like it's been discuss for a while. I've seen multiple threads on a few different forums dedicated to this issue. There was recently a mention on the MHD thread. Hopefully the MHD crew are looking into a solution. I just cant accept that surging when backing out slowly is normal. Anyone have any news on this?
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      07-15-2017, 03:11 PM   #79
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Quote:
Originally Posted by cjdzombie View Post
Got to bump this.

I can't believe there hasn't been a solution to this yet. Seems like it's been discuss for a while. I've seen multiple threads on a few different forums dedicated to this issue. There was recently a mention on the MHD thread. Hopefully the MHD crew are looking into a solution. I just cant accept that surging when backing out slowly is normal. Anyone have any news on this?

I feel exactly the same way you do. I have searched extensively on the internet and nobody has been able to figure this issue out. I still have the engine surging in reverse and in D when the steering wheel is at full lock. Really a pain in the ass when driving through heavily populated tight restaurant drives thru's. I still wonder if the MHD software is the culprit. I should remove it and see if the surge goes away.
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      09-28-2017, 12:02 AM   #80
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Did anyone ever figure this out? I still have the idle surge that is induced by steering input at idle level rpms.
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      09-28-2017, 06:18 AM   #81
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I just recently updated to the latest xHP transmission map (v1.5) and haven't had the surge issue when backing up since. I hope this cured the problem, but not sure.
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      09-28-2017, 09:14 AM   #82
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A BMW master technician on another forum told me this when I pm'd the symptoms and the link to this thread:

I've never had that concern on a repair order. N55s are finicky little engines. Actually a down right pain in the ass to be honest. They are notorious for idle surges ECT.

I do not know a fix for it personally but I do know there are lots of action that can be taken with valvetronic faults in the car. Possibly an ecentric shaft, vtt motor harness and dme. All of those can cause that
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      09-28-2017, 10:54 AM   #83
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I have this issue as well...my dealer increased idle rpm by 100 hoping to help. It did a little.
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      09-28-2017, 11:21 AM   #84
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I had a similar problem but it just solved itself.
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      09-28-2017, 05:36 PM   #85
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Quote:
Originally Posted by lazytornado View Post
I had a similar problem but it just solved itself.
Wow! I wish I was that lucky. This issue drives me insane. I have searched the Internet extensively and nobody has found out what causes it or how to fix it.
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      09-28-2017, 05:49 PM   #86
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if this adds to the mystery I have a X5 3.5i with the N55 and my Google search about this exact issue led me here. Two issues.

When stopping at a stop light or wherever the transmission almost acts like it's going into neutral and the rpms raise a few hundred, then settle back down.

Also, if I am turning the wheel at low speeds the engine will raise the rpm causing the car to lurch forward. I have seen it too where the car will raise and lower the rpm several times quickly if you have pressure on the wheel and at a stand still. I thought it was torque converter related, but when you take off it's smooth as silk.
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      09-28-2017, 06:02 PM   #87
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It seems like a lot people have the same symptoms, but nobody has found a solution. Several people have been to the BMW service department with no resolve.
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      09-30-2017, 11:24 PM   #88
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Anyone?
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