|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Search | Today's Posts | Mark Forums Read |
|
BMW 3-Series (E90 E92) Forum
>
ZF6hp kicks in first gear when cold
|
|
07-04-2020, 04:45 AM | #1 |
New Member
1
Rep 5
Posts |
ZF6hp kicks in first gear when cold
Hi All,
I have a 2009 e92 330i with zf6hp transmission. After engine is started, car drives well as well shifts are smooth until I stop e.g. at red light. If i’m on break for about a minute, after releasing the break the car doesnt start rolling, the transmission kicks hard. Every other gear is smooth. If i stop at the red light and put the gear in N, after a minute back to D, the car starts moving very smoothly, also shifts are nice. The problem only appears if i step on the break for about a minute and the gear selector is in D. After engine (transmission) oil is warmed, the problem doesnt occure. I logged some date with testo and realised that after stepping on break for long time, the transmission gear goes to 0, after releasing to 1. I have already changed the transmission oil and filter, also checked for error code and there wasn’t any. Could you help me please what can be the root cause and how to go on with the problem solving? Thank you very much in advance. |
07-05-2020, 11:33 PM | #2 |
Banned
2007
Rep 2,025
Posts
Drives: 2008 E92 328xi
Join Date: Nov 2019
Location: Miami
|
This is a common issue with the zf6. I would first go and replace the valve body seals. If that doesn't fix it you'll need to do the solenoids. Usually it isn't this severe though. Any codes?
|
Appreciate
1
colorado.e9x3538.50 |
07-07-2020, 12:22 AM | #3 |
Second Lieutenant
80
Rep 244
Posts
Drives: 2006 330i Manual
Join Date: Nov 2016
Location: Detroit
|
We had a similar issue with my friend's Z4 and 6hp trans. We changed the filter with a new ZF one and refilled it with Liquimoly 1800 ATF.
We followed the refill procedure exactly. It shifts MUCH better now. His zed has about 131k mi on it. |
Appreciate
1
colorado.e9x3538.50 |
07-07-2020, 11:49 AM | #4 |
New Member
1
Rep 5
Posts |
I don't have any error codes. Had this issue before and after oil change also. Oil and filter is changed with OEM parts (ZF).
|
Appreciate
0
|
07-07-2020, 11:52 AM | #5 |
Second Lieutenant
80
Rep 244
Posts
Drives: 2006 330i Manual
Join Date: Nov 2016
Location: Detroit
|
I guess I missed the part about you changing the fluid/filter already.
I found this video for the seals if it helps you. |
Appreciate
0
|
06-17-2022, 04:56 AM | #6 | |
New Member
0
Rep 9
Posts |
Quote:
I have the same problem. When the car is cold and when i hold it on the brake for a long time, i feel a kick. How did you fix this problem? |
|
Appreciate
0
|
06-17-2022, 12:51 PM | #7 |
Lieutenant Colonel
1099
Rep 1,700
Posts |
Low fluid level is the first thing that comes to mind.
Also there are plastic and rubber seals that fail, causing pressure loss that could result in the same thing. Post #12 in https://www.e90post.com/forums/showthread.php?t=1911024 You should check these seals because they are known to fail. I use genuine ZF parts: https://www.thectsc.com/products/sea...21-243-43.html Last edited by mainbearing; 06-17-2022 at 12:57 PM.. |
Appreciate
0
|
07-22-2022, 01:18 AM | #9 |
New Member
0
Rep 9
Posts |
Ok guys.
I change this ZF plastic parts, oil and filter... but the car have the same issue. I don't know where is the problem (I have the same problem. When the car is cold and when i hold it on the brake for a long time, i feel a kick.). i don't have any error code or anything else. Please help with your opinion. Thanks! |
Appreciate
0
|
07-22-2022, 09:27 AM | #10 | |
Brigadier General
2085
Rep 3,800
Posts |
Quote:
__________________
2007 335i, BMS DCI, BMS Chargepipe w/Tial BOV, ARM Catless Downpipes, silicone inlets, Bilstein B12 Prokit Suspension, Whiteline subframe bushings, Front/Rear M3 control arms, G-Plus FMIC, Stage 2 LPFP, Custom E40 tune by Justin (V8Bait), xHP stage 3 transmission flash, RB Two Turbos....10.90 @ 128mph
|
|
Appreciate
0
|
07-22-2022, 09:36 AM | #11 | |
New Member
0
Rep 9
Posts |
Quote:
And oil is change correctly. |
|
Appreciate
0
|
07-22-2022, 10:39 AM | #12 |
eBay Special
3539
Rep 3,156
Posts
Drives: E90 330xi
Join Date: Feb 2018
Location: Western Slope, Colorado
|
As everyone else has mentioned- replace all seals and tranny pan (built in filter) as well as a full fluid flush. Check Vehicular DIYs video on doing that, he does a great explanation for it especially the fluid fill procedure.
When I did mine not only was my fluid a liter low, it looked worse than sewer water. It was black and you couldn't even see 1mm below the surface. The original seals had also shrunk and become stiff. After doing all that, my transmission was much happier. The shifts had smoothened out, the 1-2 and 2-3 clunk were reduced, and it almost completely got rid of my highway limp mode issue. Not quite though- so I'm replacing it
__________________
Common sense is a flower that does not bloom in everyone's garden
|
Appreciate
1
smatanovic198.50 |
07-22-2022, 03:59 PM | #13 | |
New Member
0
Rep 9
Posts |
Quote:
|
|
Appreciate
0
|
07-23-2022, 09:01 PM | #14 |
Second Lieutenant
118
Rep 258
Posts |
After changing fluid I understand that it's necessary to reset the adaptation values and to perform the relearn procedure. I once reset the values and didn't performed the relearn process and transmission was not ok. After reseting again and inmediatly doing the relearn process, transmission was smooth again.
Maybe OP shoud try that (if not performed already). |
Appreciate
0
|
07-24-2022, 05:03 AM | #15 | |
New Member
0
Rep 9
Posts |
Quote:
|
|
Appreciate
0
|
07-24-2022, 04:29 PM | #16 |
Lieutenant Colonel
1099
Rep 1,700
Posts |
If the seals and solenoids have been changed and the transmission still does this when COLD (but works properly when WARM), maybe there is still a pressure leak somewhere? I am not sure.
Clutch E bushing wear and pressure leak there is another common problem when transmission fluid is neglected, but that will show up with other gears (4-5-6??) and not when braked? |
Appreciate
0
|
07-24-2022, 05:10 PM | #17 | |
Lieutenant Colonel
485
Rep 1,969
Posts |
Quote:
Resetting adaptations with a fluid/filter change is a bad idea. This is not recommended. You're only resetting adaptations after major work (solenoids, valve body, etc)
__________________
'09 335D
'18 540i xDrive |
|
Appreciate
0
|
07-25-2022, 03:07 AM | #18 | |
New Member
0
Rep 9
Posts |
Quote:
Maybe we search the problem there. |
|
Appreciate
0
|
07-25-2022, 07:01 AM | #19 | |
Brigadier General
2085
Rep 3,800
Posts |
Quote:
When I did my solenoids, I didn't reset the adaptations......and as I drove the car I checked the clutch times and pressures. And sure enough, yep, the transmission adjusts them on it's own. More damage can be caused than good if you reset them. Also....for people having transmissions issues, a bad/sticky shift solenoid can cause all kinds of shifting/slipping issues. Replace them while you have the valve body off when you are replacing the sleeve and D seals.
__________________
2007 335i, BMS DCI, BMS Chargepipe w/Tial BOV, ARM Catless Downpipes, silicone inlets, Bilstein B12 Prokit Suspension, Whiteline subframe bushings, Front/Rear M3 control arms, G-Plus FMIC, Stage 2 LPFP, Custom E40 tune by Justin (V8Bait), xHP stage 3 transmission flash, RB Two Turbos....10.90 @ 128mph
|
|
Appreciate
0
|
07-25-2022, 12:26 PM | #20 | |
Second Lieutenant
118
Rep 258
Posts |
Quote:
|
|
Appreciate
0
|
07-25-2022, 12:50 PM | #21 | |
Brigadier General
2085
Rep 3,800
Posts |
Quote:
.....and unless you do a full rebuild, you don't need to reset them...so why do it? It's just harder on the transmission, and a royal pain in the butt. I don't know how many people I've seen on the FB forums posting stuff like "just changed my fluid and filter, and reset my adaptations....no my car isn't want to shift right....or throws up all kinds of transmission fault errors". Just because you can, doesn't mean you should Here is the relearn procedure.......
__________________
2007 335i, BMS DCI, BMS Chargepipe w/Tial BOV, ARM Catless Downpipes, silicone inlets, Bilstein B12 Prokit Suspension, Whiteline subframe bushings, Front/Rear M3 control arms, G-Plus FMIC, Stage 2 LPFP, Custom E40 tune by Justin (V8Bait), xHP stage 3 transmission flash, RB Two Turbos....10.90 @ 128mph
|
|
Appreciate
1
Nando_e90117.50 |
Bookmarks |
Thread Tools | Search this Thread |
|
|