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Author Topic: Slight gear jerk when going from 2 - 3  (Read 1465 times)

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October 26, 2016, 11:13:50 AM

martin33100

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Slight gear jerk when going from 2 - 3
« on: October 26, 2016, 11:13:50 AM »
Hi guys, our E70 has now come up to approx 155k and we sometimes get a jerky gear change when going from 2-3, also does it if you go into manual and do 2-3, all other gears are ok.

Even before this started I was thinking of getting one of the ZF service kits and doing the gearbox oil and filter.

Just wondered if anyone else has had any issues like this?

October 26, 2016, 11:39:51 AM
Reply #1

Steamyrotter

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Re: Slight gear jerk when going from 2 - 3
« Reply #1 on: October 26, 2016, 11:39:51 AM »
The question will be when was the last gearbox maintenance?
If this is the first then you may be too late, or lucky!!

From research the newer boxes are more robust (not sure which you have as no year / range stated) but anything with rotating and friction parts will not last forever, but can be made to last longer with routine maintenance.

Just be wary that a service could do wonders, but also may just as quick reveal previously unknown horrors!!
If things were meant to be easy, then I will soon complicate them....
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Anything I say is only from my personal experience and knowledge..
I don't assume to know everything, and know there is a lot I don't know..
But then I could be talking bollox.. O:-)

October 26, 2016, 12:57:05 PM
Reply #2

martin33100

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Re: Slight gear jerk when going from 2 - 3
« Reply #2 on: October 26, 2016, 12:57:05 PM »
Thanks for your reply, the gearbox has never been serviced because it came with full BMW history and as the first owner wasn't mechanically minded he probably believed BMW's when they said the gearbox oil is sealed for life.

It's an 08 6 speed, I work on container moving equipment at Southampton docks and most of are ZF auto boxes we have get oil changes every 4000 hours.
 

October 26, 2016, 01:56:36 PM
Reply #3

Steamyrotter

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Re: Slight gear jerk when going from 2 - 3
« Reply #3 on: October 26, 2016, 01:56:36 PM »
ZF 6 speed are prone to issues at high mileage..
Sorry.

End of day the act of changing fluid may or may not help..

You could be lucky and the internal wear is minimal and fluid change will not affect anything untoward, but going on research and experience (I have done and had a bit in the past!) you could be on a hiding to nowhere!

the fact that the box is showing signs of stress (The jerkiness you never had) most probably points to the fact the box is on its way out and that the wear is sufficient to allow the friction material loaded fluid to seep through..

The most likely (and hopefully i am wrong on this) outcome is that you change fluid, it then clears out any suspended and disposed friction material and then you loose all drive completely.

you could try the usual gearbox shift parameter resets and throttle response resets and may give you more time.
But unfortunately it could be all for nothing..


Conversely you could change it and all would be fine.


If things were meant to be easy, then I will soon complicate them....
Please note...
Anything I say is only from my personal experience and knowledge..
I don't assume to know everything, and know there is a lot I don't know..
But then I could be talking bollox.. O:-)

October 26, 2016, 02:39:14 PM
Reply #4

martin33100

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Re: Slight gear jerk when going from 2 - 3
« Reply #4 on: October 26, 2016, 02:39:14 PM »
Thanks for the info, do you need DIS to reset the gearbox shift parameters?

October 26, 2016, 03:46:09 PM
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grumpywurzel

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Re: Slight gear jerk when going from 2 - 3
« Reply #5 on: October 26, 2016, 03:46:09 PM »
Sounds like a clutch pack is wearing/worn, if the box hasn't been checked or serviced then the car has done well to get to 155k as it is.
2005 X5 3.0d Sport

Mods: Engine Re-Map, LED Angel Eyes, HID Upgrade, Cobra Quad Tip Exhaust, Pioneer Head Unit, E70 rear wiper   :) and a new Gearbox :'(

October 26, 2016, 05:59:30 PM
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X5Sport

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Re: Slight gear jerk when going from 2 - 3
« Reply #6 on: October 26, 2016, 05:59:30 PM »
Thanks for the info, do you need DIS to reset the gearbox shift parameters?

No, that one is easy.  Ignition on without starting the engine, hold full throttle for 30 secs and switch off.  Start and away you go.  It resets the adaptions that may have been learned.

I suspect that as above you may have a clutch pack wearing and the oil is well beyond end of life (60,000 miles is BMWs 'life expectancy') and will be deteriorating.  Changing it will either be good, fail it immediately, or fail it within a short time.  A lot will depend upon what state an oil sample is in.

It could be worth getting a code read done just to see if anything shows as only serious faults will trigger a warning or light - by which time it is too late  >:(
:type: Never anthropomorphise computers. They hate that.

October 26, 2016, 06:49:16 PM
Reply #7

martin33100

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Re: Slight gear jerk when going from 2 - 3
« Reply #7 on: October 26, 2016, 06:49:16 PM »
Thanks for the info, do you need DIS to reset the gearbox shift parameters?

No, that one is easy.  Ignition on without starting the engine, hold full throttle for 30 secs and switch off.  Start and away you go.  It resets the adaptions that may have been learned.

I suspect that as above you may have a clutch pack wearing and the oil is well beyond end of life (60,000 miles is BMWs 'life expectancy') and will be deteriorating.  Changing it will either be good, fail it immediately, or fail it within a short time.  A lot will depend upon what state an oil sample is in.

It could be worth getting a code read done just to see if anything shows as only serious faults will trigger a warning or light - by which time it is too late  >:(
I have a C110 and DIS and haven't seen any codes, in all honesty the jolt when it goes from 2-3 isn't that bad and you can only notice it now as the gearbox was as smooth as silk before, anyone that hasn't driven our car before probably wouldn't even notice it.

Don't you think it's bad when ZF say change the oil at 60-80k and our local BMW dealers says its sealed for life even though they know the mileage of our car when I questioned it with them.

October 26, 2016, 07:13:47 PM
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X5Sport

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Re: Slight gear jerk when going from 2 - 3
« Reply #8 on: October 26, 2016, 07:13:47 PM »
Unfortunately as far as BMW are concerned, the 'life' is 3 years or 60,000 miles so technically they are correct and it is us the customers fault that we have all misinterpreted the 'use of sealed' for life term.

Yes it is appalling but so typical of the car industry.  BMW Dealers are not allowed to do anything to the gearbox unless there is a problem and even then only if BMW themselves approve it.  They don't fix gearboxes, just completely replace them - at ridiculous prices - and send the broken ones back to Germany.
:type: Never anthropomorphise computers. They hate that.

October 26, 2016, 08:52:26 PM
Reply #9

Steamyrotter

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Re: Slight gear jerk when going from 2 - 3
« Reply #9 on: October 26, 2016, 08:52:26 PM »
The throttle one will reset the throttle response, and may do gearbox as well.
Jury out on that at the mo as some sources say yes, and some nope!

The only way you will be 100% sure the adaptations (thanks Richard, I couldn't remember the word!!) are cleared is through something like DIS, INPA or similar.

Then it isn't that straight forward doing it through them either!!
If things were meant to be easy, then I will soon complicate them....
Please note...
Anything I say is only from my personal experience and knowledge..
I don't assume to know everything, and know there is a lot I don't know..
But then I could be talking bollox.. O:-)

November 08, 2016, 10:50:36 AM
Reply #10

Nine468

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Re: Slight gear jerk when going from 2 - 3
« Reply #10 on: November 08, 2016, 10:50:36 AM »
This may or may not help.
BUT
Ive found on my car the gearbox change "smoothness" can be slightly affected with climate temperature.
Ie as the air temp has gone down the gearbox isnt as smooth...
Ive had my car for a good 3 years and it does this every year.
I have had my oil changed aswell, as the first year it did it, i thought the worst...
PS car now has aprox 90K miles on it..
Dave W.
BMW E70 X5 40D

March 09, 2017, 08:28:08 PM
Reply #11

martin33100

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Re: Slight gear jerk when going from 2 - 3
« Reply #11 on: March 09, 2017, 08:28:08 PM »
Just thought I would update, changed the auto box fluid and that didn't make much of a difference to the 2-3 gear shift.
Then I reset the auto box clutch adaptations via BMW ISTA and the gear shift jerk went away.