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05-04-2009, 05:52 AM | #67 | |
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The more you mention it, even if it's not happening as much, the more they'll want to shut you up and just fix it for you. If it is true about what one poster said that BMW changed a few things in the 09's for driveability, I wonder if the 09' tranny would mount up to the 08's?
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05-07-2009, 03:18 PM | #68 |
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I am interested in this topic. I recently had a Rogue SSK installed and am now getting grind from first to second at high (8k+ rpm), even when I shift with normal speed (and not hyper fast). Prior to the SSK I was aggressive with my shifts and occasionally screwed up the clutch timing, but the post SSK seems different. I am not familiar enough with how/if the SSK install could have impacted things. Otherwise, I absolutely LOVE the SSK.
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05-07-2009, 07:26 PM | #69 |
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WTF today I was driving normal and shifting slowly and my 2nd gear grinded AGAIN.
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05-07-2009, 09:27 PM | #70 | |
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And I don't know why BMW would replace the clutch pedal spring; that shouldn't have anything to do with it.
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05-07-2009, 09:29 PM | #71 |
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I agree guys..we need to do something about this. But what should we do?
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05-08-2009, 06:18 AM | #72 |
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I think calling BMWNA is a good idea. I'm gonna call today. I wonder if it's just a problem with the 08's as it doesn't seem like there is anyone on this thread with a complaint on an 09'. I'm guessing that if enough people call, they might do a recall and changed something in our tranny's
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05-08-2009, 07:59 AM | #73 | |
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05-08-2009, 02:01 PM | #74 |
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I'm in Atlanta and have a 2008 E93 M3 6MT. I sent PM to John but no reply.
I'd be more than happy for him to see if I have the same problem. Next week I need to go in for my break in service. |
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05-08-2009, 02:44 PM | #75 | |||||
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The purpose of the clutch pedal spring that they replace is NOT to pull the pedal back to the 'disengaged' position! It is to help push and keep the pedal at the floor between shifts! I keep thinking- maybe the clutch spring could be the culprit of the 'missed shift' and they replaced the trans, clutch, flywheel because they figured they were damaged and need to start fresh again. Who knows.......... I will be driving a lot from Atlanta to Mississippi and back this weekend so it will give me time to put some miles on the car and get a good start on the break in proceedure.... Quote:
On another note, i will not be working for BMW anymore- Ive got a new gig that I am very excited about! Here is an amazing iPhone picture of my invoice-
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05-08-2009, 03:25 PM | #76 |
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I get the same grind and I know someone else in Bucharest who has this issue as well. I had my clutch replaced at 7000km and it improved the shifting, it was notchy before, much better after, but I still get the grind sometimes.
My dealership was great about it. They said no question about it, not shifting right (they couldn't replicate the grind), we'll replace the clutch and go from there. I now only get it 1/20 or 30 launches. I would get it more than 50% of the time before. And I've heard people at the M Driving School doing it on 1-2. People who could obviously drive properly. I just learned to live with it, either shift slower, or not get angry when it does it.
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05-08-2009, 03:29 PM | #77 |
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Hey John,
You said that your tranny was damaged, is that from multiple grinds? I mean, my car's done it 3 times in 6700km, do you think I've damaged my tranny?
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05-08-2009, 04:59 PM | #78 |
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Guys, I had this problem when shifting into 3rd gear above 7000rpm, I told bmw about it and I had a new transmission in one day. Tell your dealer about it, grinding the gears is NOT NORMAL. BTW, the installation went fine, and the new trans feels great. Only problem is, nobody at the dealer can tell me if I'm supposed to get new trans fluid after 1200 miles or not.
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05-08-2009, 05:19 PM | #79 |
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First, I haven't had the problem, but I haven't shifted 1-2 above about 7K--only 1,700 miles on the car and haven't redlined it yet.
It is clear to me from the feel of the 6MT, that the 1-2 shift--particularly at higher RPMs--must be more deliberate than other shifts. I use my fingertips, and I never push if the tranny resists. I put enough pressure on the shifter so that it goes when it's ready, and it's never resulted in a delayed shift--one where I lose momentum and/or have to worry about the rev match. (It has occurred to me that the 1-2 shift is probably the main source of delay in 0-60 times relative to the DCT.) Having read this thread, my guess is that the 2nd gear synchro simply doesn't work as fast/well as most here would like it to. As someone mentioned, the 1-2 shift at high revs is the most difficult sychronization that the tranny has to perform. My bet is that the "notchiness" associated with the 1-2 shift is there to protect against shifting before the syncho can work, and that those who have experienced the grind simply forced through the resistance. I also suspect that multiple grinds have probably damaged some of your transmissions, making the problem worse and requiring service. Just my 2 cents. I'm going to knock on wood now, or mine probably won't even go into gear next time I start her up. |
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05-08-2009, 07:13 PM | #80 |
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Louie, why don't you go do it for yourself so that you can add more to the conversation than guesses? Your car is broken in enough to redline it. I kind of wonder about someone not redlining the engine at 1201 miles, right after the fluids change.
Mine does not have this problem at all. Dave
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05-08-2009, 07:44 PM | #81 | |
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05-08-2009, 10:38 PM | #82 |
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Left Dan a voicemail earlier! Could you PM me your name so i can tell him we have the same problem?
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05-08-2009, 11:38 PM | #83 | |
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No one here has added anything other than a guess--we have yet to get a definitive diagnosis. One doesn't need to have experienced the problem to have an educated guess as to its origin. My guess may be wrong, but I think it represents a possible explanation that had not been previously enunciated as such. By the way, what did you add to this thread? You haven't experienced the problem, and you made no attempt to give any insight. You simply felt the need to take a shot at me--why, I have no idea. Then, you followed up with an attempt to question the way I break in my car. Read your break in instructions, and maybe you'll figure out why I didn't redline at 1,201. Last edited by louie_perm; 05-09-2009 at 12:34 AM.. |
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05-08-2009, 11:44 PM | #84 |
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Sure this isn't because we are shifting too fast/hard?
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05-09-2009, 12:14 AM | #85 |
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I have gotten the 1st to 2nd grind a few times, but less lately. I think that the gearbox oil is "settling" or something. Every time I got it was my mistake because I slammed it too fast.
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05-09-2009, 12:32 AM | #86 |
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That's what my guess was above--though I put it slightly differently. More explanation: When the dog collar disengages from first gear and begins to engage with second gear, the synchro mechanism makes first contact in order to synchronize second gear with the dog collar before the teeth engage. It takes time for this to happen, and the greater the difference in speed between the gears, the more time it takes for the synchro to work. Until things are sync'd, the balk ring keeps the teeth from engaging. But, the balk ring can be overcome with enough force, at which point the teeth will grind. My guess is that some are shifting too hard and/or too fast, overcoming the action of the balk or blocking mechanism. |
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05-09-2009, 03:22 AM | #87 |
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Notchy
I have an '09, and the shift from 1-2 is not smooth in any RPM range. Once in a blue moon the shift is smooth, but I don't recall the engine speed or a pattern when that occurs. Most of the time it is notchy, but I don't get a grind. After my 1,200 mile service there was less resistence when shifting and was not as notchy.
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05-09-2009, 08:07 AM | #88 | |
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What's "educated" about your "guess". Are you a mechanic of some sort? Dave
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