Gearbox Solenoid Change - Jerking Problem Solved - E90

Aaron_BMW

Well-Known Member
Dear all,

This post is especially for those who have gear box jerking problem and are at a lost at what to do.

For those whom are deciding to buy a pre-owned BMW and yet you have hear of scary tales of the expensive gear box repair, this post is to assure you that having to maintain a BMW is not so bad and I do recommend you to go ahead with the purchase of a BMW and join our big family.

Problem:
My BMW jerked forward when coming to a complete stop.
It’s not a very bad jerk but I do not enjoy it.
This is also known as common problem for E90 and I would deem this under fair wear and tear of the gear box solenoid.

Solution:
Simply replace the solenoid and with a reprogramming of the gear box.
My gear box works perfectly fine immediately after replacing the solenoids.

Function of solenoids:
Simply for the gear change from 1 to 6 and the 7th solenoid is for reverse.

Value for money recommendation:
Our BMW has a 40,000 KM gear oil change interval together with the oil pan which is actually the in-build gear oil filter. So I recommend to do the solenoid replacement together with the gear oil change as part of the servicing.

Items needed:
Please see pics below.
IMG_3460.jpg

Oil pan with build in oil filter

IMG_3461.jpg

Gear oil * 7 bottles

IMG_3462.jpg

IMG_4222_zpsb539c58f.jpg

Replacement solenoid to solve the jerking problem.

Conclusion:
Our gear box is still great and should last us for a long time. The solenoid in the gear box might not last as long but this does not mean our gear box is damaged unless proven otherwise that the gear box is really damaged and needs to overhaul. I hope this sharing helps to assure a lot of our bros and sis here for our BMW.

What should you do if you want to ask me for the workshop and contacts?
You should PM me and make my life easier to just reply u in the PM.
The forum rules do not allow anyone to post workshop name or price.

 
Last edited by a moderator:
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

can share what's the total damage ?
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

Useful info for most planning to get an E90 (& E60 too i supposed).

Thanks
.
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

PFL E90 comes with ZF gearboxes. LCI E90s should be running on GM gearboxes so parts would be different from what TS has.
anyway the solenoids housing are made of plastic so will definitely fail or crack due to the high temperature inside the gearbox.
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

aaron u r a very systematic guy. very to the point. very helpful.

are u a robot?
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

Prease. Only Brobot is robot.
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

xeonm3;949015 said:
can share what's the total damage ?

i did it within SGD $1000 +/-
you should expect market rate from $1800 - $3K ++
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

Red_Bean_Bun;949019 said:
Great pics ..... How long did it take ?

around 3 hours +
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

totoseow;949021 said:
aaron u r a very systematic guy. very to the point. very helpful.

are u a robot?

thanks
of course not~!
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

ah sorli. i see it now..u selling pprty. whats hot?
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

How much just for parts bro? You bought from Eng Soon i suppose?

I did my ATF 20k ago, so another 20k will go do this which equates to end 2013, if my auto trans holds up till then.

Jerks once in a while, but quite annoying esp in stop and go traffic.

Aaron_BMW;949023 said:
i did it within SGD $1000 +/-
you should expect market rate from $1800 - $3K ++
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

canuck78;949030 said:
How much just for parts bro? You bought from Eng Soon i suppose?

bought from stockies in Kakit Bukit, please check with them
 
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Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

Haha, thats $847 in total for parts. You did with labour in Jb workshop?

3 manhours in JB RM 50x3 niah!

Aaron_BMW;949031 said:
Solenoid - $540
Gear oil - $21 * 7
Oil pan - $160

bought from stockies in Kakit Bukit
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

canuck78;949033 said:
Haha, thats $847 in total for parts. You did with labour in Jb workshop?

3 manhours in JB RM 50x3 niah!

u r smart~!!!
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

No lah, car previously seen doc too many times until quite familiar with their charges now hehe

Full overhaul (i.e. solenoid plus valve body rebuilt kit) i was quoted by Michael at Eng Soon around 2.2k for parts alone.

But usually this solenoid is the one to change first, plastic part so give way usually at 5year mark
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

canuck78;949042 said:
No lah, car previously seen doc too many times until quite familiar with their charges now hehe

Full overhaul (i.e. solenoid plus valve body rebuilt kit) i was quoted by Michael at Eng Soon around 2.2k for parts alone.

But usually this solenoid is the one to change first, plastic part so give way usually at 5year mark

+ RM850 for labour . About 2.6 total for valve body change.
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

That sounds about right!

Envy you guys driving with a creamy smooth transmission now - the last major thing on my e90 to-fix list.

nhc;949053 said:
+ RM850 for labour . About 2.6 total for valve body change.
 
Re: Gearbox Solenoid Change - Jerking Problem Solved - E90

canuck78;949042 said:
No lah, car previously seen doc too many times until quite familiar with their charges now hehe

Full overhaul (i.e. solenoid plus valve body rebuilt kit) i was quoted by Michael at Eng Soon around 2.2k for parts alone.

But usually this solenoid is the one to change first, plastic part so give way usually at 5year mark

Bro Canuck, go lah visit the Doc....before closed for CNY x 08 days ! hahahaha ! Honestly, i am also waiting for my next ATF change, then Bo Bian, have to change the solenoids. every cold start now is like a dancing queen ! hahaha !
 

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