AT starting to slip in 5th.....time for rebuild?

iqraceworks · 04-20-2020, 08:36 PM

Quote:

Originally Posted by 335xiMsport

Try driving it hard, if not then trying replacing the sealing sleeves and if that doesn't work then its either the e clutch or the internal bushing

It's already got one of the new double D seals, and four new sleeve seals.

Besides one of the Sonax zip kits....there is nothing really left to do if it's still slipping in 5th...besides rebuild the transmission.

I'm going to give it a few more days to adjust the adaptations, and then I'll put some power to it and see if it holds it in 5th gear. It does seems to shift a little firmer than before.....so maybe that's a sign that more fluid it making its way through the solenoids.

iqraceworks · 04-21-2020, 04:45 PM

****UPDATE****

Well.....I'm excited to say that the new solenoids have appeared to fix the slipping in 5th gear issue I was having. I did three pulls in 5th gear today from 2,000-5,000rpms....no issues at all. Before it was start slipping as soon as the boose and power came on around 3,000 rpms.

The only real issue I have now is the slightly rough and awkward shifts I'm getting from the new solenoids. Erikkson said that it's going to take a good 100 or so miles before the transmission makes changes to the adaptations and the shifts smooth out.

So at this point....I'm pretty happy!! Hopefully xHP will fix the bug in their newest update so their adaptation reading feature works again. I'm curious as to what my adaptations have changed to after the new solenoids.

Wolf 335 · 04-22-2020, 07:11 AM

Quote:

Originally Posted by iqraceworks

****UPDATE****

Well.....I'm excited to say that the new solenoids have appeared to fix the slipping in 5th gear issue I was having. I did three pulls in 5th gear today from 2,000-5,000rpms....no issues at all. Before it was start slipping as soon as the boose and power came on around 3,000 rpms.

The only real issue I have now is the slightly rough and awkward shifts I'm getting from the new solenoids. Erikkson said that it's going to take a good 100 or so miles before the transmission makes changes to the adaptations and the shifts smooth out.

So at this point....I'm pretty happy!! Hopefully xHP will fix the bug in their newest update so their adaptation reading feature works again. I'm curious as to what my adaptations have changed to after the new solenoids.

Great news. Thank you for a quick turn around and for keeping us posted.

Looks like i will be doing my solenoids.

Do you recall which color set you had on yours?

iqraceworks · 04-22-2020, 09:21 AM

Here you go...does this help?

infinite_creations25 · 04-22-2020, 07:59 PM

How do your adaptations look now compared to before with the old solenoids?

iqraceworks · 04-22-2020, 08:19 PM

Quote:

Originally Posted by infinite_creations25

How do your adaptations look now compared to before with the old solenoids?

Not sure....the newest version of xHP has a bug where it's not able to read adaptations.....waiting for them to fix the bug. As soon as they get it fixed, I will see what they are and post them up.

Wolf 335 · 04-29-2020, 01:34 PM

Quote:

Originally Posted by iqraceworks

Not sure....the newest version of xHP has a bug where it's not able to read adaptations.....waiting for them to fix the bug. As soon as they get it fixed, I will see what they are and post them up.

Hey how's the tranny holding up? Shifting still good?

iqraceworks · 04-29-2020, 03:57 PM

Quote:

Originally Posted by Wolf 335

Hey how's the tranny holding up? Shifting still good?

Actually, I haven't driven the car at all this week. I hit a piece of wood in the road last week and screwed up th sidewall on one of my front tires. Ordered a new set of Pilot Powers to put on this weekend....then I will be back on the road.

iqraceworks · 04-30-2020, 07:01 AM

Quote:

Originally Posted by Wolf 335

Hey how's the tranny holding up? Shifting still good?

Tires came in yesterday....got them put on.

Drove the car to work this morning....seems to be shifting much better. It's slowly relearning all of the adaptations after I installed the new solenoids. I figure a few more days/miles and everything should be good to go. It does seem to shift much faster than before...I'm assuming that's because of the new solenoids that are working like they are supposed to.....

iqraceworks · 05-15-2020, 07:02 AM

I finally got a chance to pull the adaptations after driving a few hundred miles with the new solenoids. The only differences I really see are that the e-clutch and b-clutch are now requiring less pressure (I think that's good...right?). I'm assuming that those two solenoids must have been restricted at some point, and the transmission was trying to bump up the pressure compensate. Now with the new solenoids.....it's not requiring as much pressure??

The transmission still shifts a little notchy sometimes, but it's smoothing out the more I keep driving it.

fatty5000 · 05-19-2020, 02:19 PM

Random question here.

B Clutch ... was your 3rd gear change a bit jerky before the solenoid change ?

iqraceworks · 05-19-2020, 04:47 PM

Quote:

Originally Posted by fatty5000

Random question here.

B Clutch ... was your 3rd gear change a bit jerky before the solenoid change ?

No, not that I remember.

I have noticed that now with the new solenoids, all of the shifts seem a little faster/snappier. I'm not sure if that's just because the transmission is still adjusting adaptations, or the new solenoids just flow that much better/faster. It seems like it shifts from reverse to drive pretty harsh.....didn't do that before.

turbohugh · 05-20-2020, 05:21 PM

Quote:

Originally Posted by iqraceworks

No, not that I remember.

I have noticed that now with the new solenoids, all of the shifts seem a little faster/snappier. I'm not sure if that's just because the transmission is still adjusting adaptations, or the new solenoids just flow that much better/faster. It seems like it shifts from reverse to drive pretty harsh.....didn't do that before.

Surprised and happy that worked for you. My e-clutch code was the E-Ratio Monitoring and my main bushing was measured out to be bad.
XHP flash tunes are pretty nice IMHO. GOod luck

fatty5000 · 05-21-2020, 03:10 AM

Quote:

Originally Posted by iqraceworks

No, not that I remember.

I have noticed that now with the new solenoids, all of the shifts seem a little faster/snappier. I'm not sure if that's just because the transmission is still adjusting adaptations, or the new solenoids just flow that much better/faster. It seems like it shifts from reverse to drive pretty harsh.....didn't do that before.

Hmmm

Just a theory I had, I've got the slip in 5th and a 3rd is a bit harsh, both are ok if I ease off when changing using the paddles and 5th at WOT. It plays up more under light load or normal use, I've got use to manually changing up, it slips in gear now and then as well.

I've been quoted £1800 for a rebuild. I could do this first, but then if it doesn't work it's more money on the rebuild

Keep us updated on any thing worth knowing

Wolf 335 · 05-21-2020, 07:52 AM

In my case, i ended up having the transmission rebuilt, clutch pack B and E were worn out.

Now it's nice and buttery smooth.

iqraceworks · 05-21-2020, 08:34 AM

I do have a spare transmission setting in the garage.....might try rebuilding it when I have some free time. But....so far my transmission has been holding the power without any issues after the new solenoids.

ThatRWD · 04-18-2022, 02:17 AM

Quote:

Originally Posted by Wolf 335

In my case, i ended up having the transmission rebuilt, clutch pack B and E were worn out.

Now it's nice and buttery smooth.

Having similar issues, I also hear a hissing sound when it shifts into 4th. How can I determine if my clutch packs are bad? I've done solenoids, Mechatronics seal, finger seals, fluid, pan and gasket.

XHP only shows an 48FA code and the following values (see attachment)

iqraceworks · 04-18-2022, 06:55 AM

Quote:

Originally Posted by ThatRWD

Having similar issues, I also hear a hissing sound when it shifts into 4th. How can I determine if my clutch packs are bad? I've done solenoids, Mechatronics seal, finger seals, fluid, pan and gasket.

XHP only shows an 48FA code and the following values (see attachment)

What fluid are you running? And did you do the proper procedure for getting the fluid level set right? It's got to be at a specific temp when you fill the fluid in.

ThatRWD · 04-20-2022, 10:28 AM

Zf fluid, I had a shop do the work.

iqraceworks · 04-20-2022, 10:44 AM

Quote:

Originally Posted by ThatRWD

Zf fluid, I had a shop do the work.

......then why don't you take it back to the shop and tell them something isn't right, and to fix it?? If they didn't do it right......make them do it right.

ThatRWD · 04-20-2022, 08:22 PM

They're not experienced with rebuilds, I'm just collecting information to made a decent decision.

LanDzia · 10-13-2023, 12:31 PM

Quote:

Originally Posted by iqraceworks

......then why don't you take it back to the shop and tell them something isn't right, and to fix it?? If they didn't do it right......make them do it right.

Hey man, how was your trans after all this time?
Were solenoids a fix for all your issues?

04-21-2020, 04:45 PM	#46
iqraceworks Brigadier General 2085 Rep 3,800 Posts Drives: 2007 335i Join Date: Aug 2019 Location: Missouri iTrader: (0)	**UPDATE** Well.....I'm excited to say that the new solenoids have appeared to fix the slipping in 5th gear issue I was having. I did three pulls in 5th gear today from 2,000-5,000rpms....no issues at all. Before it was start slipping as soon as the boose and power came on around 3,000 rpms. The only real issue I have now is the slightly rough and awkward shifts I'm getting from the new solenoids. Erikkson said that it's going to take a good 100 or so miles before the transmission makes changes to the adaptations and the shifts smooth out. So at this point....I'm pretty happy!! Hopefully xHP will fix the bug in their newest update so their adaptation reading feature works again. I'm curious as to what my adaptations have changed to after the new solenoids.
	Appreciate 0 Quote

04-22-2020, 09:21 AM	#48
iqraceworks Brigadier General 2085 Rep 3,800 Posts Drives: 2007 335i Join Date: Aug 2019 Location: Missouri iTrader: (0)	Here you go...does this help? __________________ 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 Wolf 3352551.00 Quote

04-22-2020, 07:59 PM	#49
infinite_creations25 Private First Class 58 Rep 124 Posts Drives: bmw Join Date: Jan 2017 Location: garage iTrader: (0)	How do your adaptations look now compared to before with the old solenoids?
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05-15-2020, 07:02 AM	#54
iqraceworks Brigadier General 2085 Rep 3,800 Posts Drives: 2007 335i Join Date: Aug 2019 Location: Missouri iTrader: (0)	I finally got a chance to pull the adaptations after driving a few hundred miles with the new solenoids. The only differences I really see are that the e-clutch and b-clutch are now requiring less pressure (I think that's good...right?). I'm assuming that those two solenoids must have been restricted at some point, and the transmission was trying to bump up the pressure compensate. Now with the new solenoids.....it's not requiring as much pressure?? The transmission still shifts a little notchy sometimes, but it's smoothing out the more I keep driving it. __________________ 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 Wolf 3352551.00 Quote

05-19-2020, 02:19 PM	#55
fatty5000 Enlisted Member 3 Rep 47 Posts Drives: 330D Join Date: Oct 2019 Location: UK iTrader: (0)	Random question here. B Clutch ... was your 3rd gear change a bit jerky before the solenoid change ?
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05-21-2020, 07:52 AM	#59
Wolf 335 Brigadier General 2551 Rep 3,658 Posts Drives: 2007 E92 335i Join Date: Aug 2012 Location: Toronto iTrader: (0)	In my case, i ended up having the transmission rebuilt, clutch pack B and E were worn out. Now it's nice and buttery smooth.
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05-21-2020, 08:34 AM	#60
iqraceworks Brigadier General 2085 Rep 3,800 Posts Drives: 2007 335i Join Date: Aug 2019 Location: Missouri iTrader: (0)	I do have a spare transmission setting in the garage.....might try rebuilding it when I have some free time. But....so far my transmission has been holding the power without any issues after the new solenoids.
	Appreciate 0 Quote

04-20-2022, 10:28 AM	#63
ThatRWD Major 114 Rep 1,062 Posts Drives: 335i Join Date: Mar 2014 Location: Northern VA iTrader: (0)	Zf fluid, I had a shop do the work.
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04-20-2022, 08:22 PM	#65
ThatRWD Major 114 Rep 1,062 Posts Drives: 335i Join Date: Mar 2014 Location: Northern VA iTrader: (0)	They're not experienced with rebuilds, I'm just collecting information to made a decent decision.
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