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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 09-28-2014, 09:33 AM
shalviin shalviin is offline
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Jolt After Stopping- Please Help.

Hi guys. I am new to this forum and would appreciate any help I can get. I have done my research on this issue and have done certain suggested repairs but to no avail. No I am stumped!
So my 2006 750Li (103k Miles) drives fine. I only drive in regular mode. But when it comes to a complete stop, after the 'settling' of the car, there is a jerk (I think when it finally shifts from 2nd to 1st gear). This is ONLY happening AFTER the car has come to a complete stop and right after it has done the 'settling' motion.
I have done the reset by pressing on the gas pedal for 30 secs but that has not helped. I have also changed out the guibo joint to no avail (my guibo didnt seem worn out but changed it out anyways). My next step is to have my mechanic perform a tranny oil and filter change. My mechanic was also saying that it could be a little bushing (looks like 2 squares joined together) inside the tranny. He will change that out while he is doing the oil, etc. What else could be causing it if the oil and bushing change doesnt fix it?
The other issue I noticed is that it doesnt shift right in Manual mode. It has to go really high RPM to shift from 1st to 2nd, and then it wont shift to 3rd regardless of the RPM. Sometimes while pressing the upshift control, it will downshift to 1st while driving in 2nd and trying to change to 3rd.
I wonder if these 2 issues are related? I have not tried to fix the 2nd issue yet.
Any help here is appreciated!
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  #2  
Old 09-28-2014, 01:19 PM
mgucci745 mgucci745 is offline
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Could be your center support bearing.

Check "zf" transmission revealed thread on here
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  #3  
Old 09-28-2014, 03:05 PM
sam_sav sam_sav is offline
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As far as manual mode goes, you do know that the two shifting buttons on the front of the steering wheel are to downshift and there are two more buttons on the back side of the steering wheel that are for upshifting. A lot of people don't know about the buttons on the backside. That would explain why it downshifts when you hit the front button


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  #4  
Old 09-29-2014, 10:35 AM
shalviin shalviin is offline
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Thanks mgucci- i will read into it.
Sam- I never noticed the buttons at the back. That makes sense now. Hahaha. Thanks much!
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  #5  
Old 09-29-2014, 11:48 PM
jbhoot jbhoot is offline
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The little bushings are the mechatronics sealing adapter - they are known to cause the problem you are having. I had the same problem and changing the mechatronics sealing adapter fixed it. I did also change my fluid at the same time and the I also changed the sealing sleeve as well. You can see more here

http://www.zftranspart.com/images/custom/mecha.pdf


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  #6  
Old 09-30-2014, 08:41 AM
shalviin shalviin is offline
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Thank you. I will have the oil and the bushing replaced this Sunday. Will update you on how it goes.


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  #7  
Old 09-30-2014, 08:28 PM
fratan fratan is offline
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At 100,000 miles, have them change out the bridge seal adapter or mechatronics adapter as the previous member suggested. It is between the mechatronics and the transmission. This is a must since the seal gets brittle and cracks causing a vacuum leak.
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Last edited by fratan; 09-30-2014 at 08:32 PM.
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  #8  
Old 10-01-2014, 03:41 PM
shalviin shalviin is offline
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Fratan- are you and jbhoot talking about the same thing? That rectangular bushing divided into 2 squares?


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  #9  
Old 10-01-2014, 04:21 PM
fratan fratan is offline
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Yes, it's called the bridge seal adapter and that should fix your issue. Have you gotten any i messages on the dash? If that's not it then change your tranny fluid and rest adaptations in INPA.


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  #10  
Old 10-01-2014, 05:47 PM
shalviin shalviin is offline
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How do you reset your rest adaptations? Is it that 'press gas pedal, etc' deal? No messages on dash either. I am changing the mech adapter and fluid and filter for tranny this sunday. Fingers crossed!


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  #11  
Old 10-01-2014, 06:01 PM
mgucci745 mgucci745 is offline
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Went to a shop today regarding my transmission issues. He hooked a $15,000 scanner and had me drive around, my transmission parameters were fine..

He then had me stop and pop the hood, and he brake torqued the engine (hold the brake, and give it some revs) The engine would lift in drive when revved, and sink when in reverse and revved.
the mechanic (shop owner) concluded that my motor mounts, and transmission mounts are starting to give out (hence the shifting problems)
this guy drove around with me for 30 mins, and only charged me $40 cash


before you do anything, i suggest doing this. The whole time I was believing it was my guibo, trans adapter and seal.... He told me everything with my transmission was fine, and it is INDEED my motor mounts and tranny mount. He told me 6-800$ for parts and labor, but I can wait up to 6-8 months before I start having a "Real" problem.
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  #12  
Old 10-01-2014, 06:08 PM
shalviin shalviin is offline
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Thanks mgucci. I will ask my mechanic if he can do the same.


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  #13  
Old 10-01-2014, 06:14 PM
mgucci745 mgucci745 is offline
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Quote:
Originally Posted by shalviin View Post
Thanks mgucci. I will ask my mechanic if he can do the same.


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No problem man... If you were in LA I would bring you to this guy...

The guy was in the car with me when it was doing harsh 2-1, 1-2 shifting... and that clunk noise in gear... He told me that even the clunk noise when put into gear was from my tranny and motor mounts....

I'm debating whether I should tackle this myself.... 18 year old with no help or supervision from a professional..... Well, you tell me.
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  #14  
Old 10-01-2014, 08:12 PM
fratan fratan is offline
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I never read once that you need to replace the motor mounts. How many miles on your E65? I drove a E46 with 250,000 and the motor mounts were fine.


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  #15  
Old 10-01-2014, 09:17 PM
shalviin shalviin is offline
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I know man. We couldve ganged up on these cars together!!!


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  #16  
Old 10-01-2014, 09:26 PM
mgucci745 mgucci745 is offline
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86,250 miles on my 2002 7 series...
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  #17  
Old 10-01-2014, 09:41 PM
mgucci745 mgucci745 is offline
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Came across this "Guibos he said, only need to be changed once they start to show cracks. Motor mounts on the other hand can go bad in just a couple of years (!), especially the trans mounts, due to their small size."
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  #18  
Old 10-07-2014, 10:51 PM
shalviin shalviin is offline
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Quick question- will disconnecting the battery and reconnecting it do anything bad? I am hoping it resets something that may solve this issue. But only if it doesnt open a whole new can of worms!!!


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  #19  
Old 10-08-2014, 10:30 AM
UDMDriver UDMDriver is offline
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Search for a topic here called 'Transmission Slam - WTF' and read it. The 2-1 shift slam is a known issue with a technical service bulletin that I discussed in the above topic. The above topic details other things that should be done in addition to the TSB. I went to an indie and had the drain and fill done on mine, replaced the two seals, flashed the software according to the TSB and finally cleared adaptations. The tranny shifts smooth as silk now.


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  #20  
Old 10-08-2014, 12:36 PM
meangreen94z meangreen94z is offline
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Quote:
Originally Posted by mgucci745 View Post
Came across this "Guibos he said, only need to be changed once they start to show cracks. Motor mounts on the other hand can go bad in just a couple of years (!), especially the trans mounts, due to their small size."
The E65 guibo doesn't crack like earlier vehicles(E36,E46, etc.)The metal sleeves the bolts go through on the guibo work the rubber back and forth and stretch it out. The way you test it: One person grabs a rear wheel and rocks it back and forth 1-2inches while the vehicle is in park/off and in the air. The other person watches the driveshaft bolts in relation to the guibo. If they are shifting back and forth within the guibo it has play(guaranteed at his mileage). But its typically not the core issue of the harsh 2-1 downshift.

For the orginal poster:The '06 transmission is different than the '02, you cant go off someone elses experience in that regard. There is a driveability retrofit for 06-early 08 models that involves replacing the DME and possibly the air boxes depending on production for it to work.It improves shift characteristics among other things. At your mileage though, I would focus on the transmission itself. Solenoids, fluid, filter, bridge seal, and clear adaptations. That is of course dependent on the condition of your current fluid(low/heavy clutch material present). You can skip the solenoids and see if the other items improve it first. I wouldn't replace the guibo until you resolve the harsh shift, a new firm guibo will only make it seem harsher.
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  #21  
Old 10-08-2014, 12:39 PM
meangreen94z meangreen94z is offline
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Quote:
Originally Posted by fratan View Post
I never read once that you need to replace the motor mounts. How many miles on your E65? I drove a E46 with 250,000 and the motor mounts were fine.


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E46 mounts do collapse/tear, but the E65/66 N62/TU mounts are extremely stout(N73 V12 mounts aren't though, common for them to leak hydraulic fluid). There is a long list of causes for transmission issues on the E65 and Ive never had the engine mounts be one of them. I've worked on these cars for over 10 years.
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  #22  
Old 10-08-2014, 02:00 PM
mgucci745 mgucci745 is offline
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Buying trans parts first, I believe my guibo or csb is worn too though. We'll see :/
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  #23  
Old 10-08-2014, 05:09 PM
shalviin shalviin is offline
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Thank you all. UDMDriver- where is this TBN you speak of?


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  #24  
Old 10-08-2014, 05:11 PM
shalviin shalviin is offline
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Meangreen- i already had the guibo replaced a week ago. U were right- no change. In the next few days i will have the tranny fluid, filter, mech adapter replaced. I will also get the DME updated and adaptations reset/ computer flashed. Will update when done!


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  #25  
Old 10-18-2014, 03:37 PM
shalviin shalviin is offline
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Update 10/18/2014. Got the tranny fluid, filter, mech adapter replaced but no change noticed. Did not get a chance to get the DME updated and adaptations reset because the guy was not there. Anyone know of any shops around sacramento area who know how to do this? My guy is always so busy and I want to get this done ASAP. Thanks for the help!
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