[Link112]

New to the forum and new to the BMW community. Just picked up a 2016 340I X-drive 6MT a week or so ago. Coming from an Audi S5 Sportback, but wanted to get back into a manual AWD.

Last night leaving from a stop going from 1st to 2nd gear (somewhat aggressively) as I let out the clutch it felt almost like I didn't engage 2nd all the and made a "bang" like it popped out of gear. Next the clutch was gone. I have had no slipping or issues and was told it was replaced with a stage 2 or 3 twin disk clutch recently. I have driven manual for 20+ years and never had this happen. The clutch has the normal chatter when disengaged at idle and now continues when pedal is pushed in. Has anyone had this happen. I have not been able to find anything in the search. I was able to get into 2nd and limp to the shop last night since I was less than a mile away. No smells leaks or any other noises when driving. Pedal still feels normal and not on the floor. I did not check any fluids. Hope this is a simple fix before the holidays!

Thanks for any feedback!

[samspiderman3125]

Originally Posted by Link112

New to the forum and new to the BMW community. Just picked up a 2016 340I X-drive 6MT a week or so ago. Coming from an Audi S5 Sportback, but wanted to get back into a manual AWD.

Last night leaving from a stop going from 1st to 2nd gear (somewhat aggressively) as I let out the clutch it felt almost like I didn't engage 2nd all the and made a "bang" like it popped out of gear. Next the clutch was gone. I have had no slipping or issues and was told it was replaced with a stage 2 or 3 twin disk clutch recently. I have driven manual for 20+ years and never had this happen. The clutch has the normal chatter when disengaged at idle and now continues when pedal is pushed in. Has anyone had this happen. I have not been able to find anything in the search. I was able to get into 2nd and limp to the shop last night since I was less than a mile away. No smells leaks or any other noises when driving. Pedal still feels normal and not on the floor. I did not check any fluids. Hope this is a simple fix before the holidays!

Thanks for any feedback!

sounds like your throwout bearing is gone, can happen sometimes from high stage clutches, sorry man that sucks.

Turn the car off, put it into 1st gear, MAKE SURE YOU WONT HIT ANYTHING, and push the clutch in and start, if your car moves forward then you gotta take the trans off bc the clutch is not releasing

[toxik]

be careful with aggressive 1st to 2nd gear changes, our transmissions are known for those synchros to be weak and can develop a grind there.

i know it’s not related to your issue here but just for future reference

[Link112]

Originally Posted by samspiderman3125

sounds like your throwout bearing is gone, can happen sometimes from high stage clutches, sorry man that sucks.

Turn the car off, put it into 1st gear, MAKE SURE YOU WONT HIT ANYTHING, and push the clutch in and start, if your car moves forward then you gotta take the trans off bc the clutch is not releasing

Thanks! I will give it a shot tonight. Not sure the shop will get it in to look at it today with it Thanksgiving week.

[Link112]

Originally Posted by toxik

be careful with aggressive 1st to 2nd gear changes, our transmissions are known for those synchros to be weak and can develop a grind there.

i know it’s not related to your issue here but just for future reference

Appreciated!

[samspiderman3125]

Originally Posted by Link112

Thanks! I will give it a shot tonight. Not sure the shop will get it in to look at it today with it Thanksgiving week.

for sure! reverse will also work just fine as long as you have enough space to not slam into someone else, keep in mind youre starting in gear lol, let me know what it does!

[Link112]

Originally Posted by samspiderman3125

for sure! reverse will also work just fine as long as you have enough space to not slam into someone else, keep in mind youre starting in gear lol, let me know what it does!

Yeah When put in gear the transmission in engaged.

[samspiderman3125]

Originally Posted by Link112

Yeah When put in gear the transmission in engaged.

can you pull the trans yourself? it’s a pretty cheap fix if it’s the throw out bearing

[Link112]

Originally Posted by samspiderman3125

can you pull the trans yourself? it’s a pretty cheap fix if it’s the throw out bearing

I like to give things a go as far as DIY, but with 3 kids and the Holiday's I just sent to be worked on. Wife is not real happy that we are down a vehicle.

I will let you know what they find. Still feel like a spring, clip, or cable let go. It never slipped or made a sound. My wife said it was one of the easiest clutches she has driven. Can a Master Cylinder just give out?

[B58 parts]

If the hydraulics failed you'd have fluid on the ground or on the firewall by your left foot and the pedal would go right to the floor and not come back. Your brake system shares this fluid as well. So if you're putting that fluid outside of the reservoir you're going to end up eventually losing your brakes.

I don't think it's a throw out bearing either it typically makes a bunch of noise before it goes. They fail in stages, before completely seizing and making the car unusable. You would have known that was on the way out for months, it would have gotten noisier and noiser every time you let the pedal out week to week. To me it sounds more like a broken shift fork or input shaft. Hope not.

[samspiderman3125]

Originally Posted by B58 parts

If the hydraulics failed you'd have fluid on the ground or on the firewall by your left foot and the pedal would go right to the floor and not come back. Your brake system shares this fluid as well. So if you're putting that fluid outside of the reservoir you're going to end up eventually losing your brakes.

I don't think it's a throw out bearing either it typically makes a bunch of noise before it goes. They fail in stages, before completely seizing and making the car unusable. You would have known that was on the way out for months, it would have gotten noisier and noiser every time you let the pedal out week to week. To me it sounds more like a broken shift fork or input shaft. Hope not.

he said he just got the car a week ago, and with a stage 2-3 clutch it’s going to be extremely noisy anyways and he won’t be used to it my moneys still on throw out bearing

[Wires]

I've had similar on other brands when the dual mass flywheel died. Not sure if BMW uses the same...

[eluded]

Wonder if problem between clutch pedal and clutch. Cable or cylinder

[im_an_alien]

Originally Posted by eluded

Wonder if problem between clutch pedal and clutch. Cable or cylinder

Cables went away a long time ago

[Link112]

Originally Posted by B58 parts

If the hydraulics failed you'd have fluid on the ground or on the firewall by your left foot and the pedal would go right to the floor and not come back. Your brake system shares this fluid as well. So if you're putting that fluid outside of the reservoir you're going to end up eventually losing your brakes.

I don't think it's a throw out bearing either it typically makes a bunch of noise before it goes. They fail in stages, before completely seizing and making the car unusable. You would have known that was on the way out for months, it would have gotten noisier and noiser every time you let the pedal out week to week. To me it sounds more like a broken shift fork or input shaft. Hope not.

Won't know until it is pulled apart and without it opened up I won't know what parts need replacing. Shop I saying clutch, because it is same labor. Also if parts are on hand and it isn't something like the bearing, they can change. I am not able to do the job myself at this point. Shop wants to have parts on hand. I am leaning toward the 550I clutch if it needs to be replaced. I am guessing I will need the flywheel also. Being on BM3 stage 2 93 I am trying to make sure I have the correct parts. Will the spring clip and fork from the 550i Clutch kit work on the 340i X-drive? Need to get the car back on the road ASAP and don't want to be held up due to a small part missing. Really hoping the clutch Spec Clutch and Flywheel is okay!

BMW Clutch Kit - LuK 21207603248
BMW Pressure Plate Bolt (Pack of 6) - Genuine BMW 21207548052KT
BMW Dual Mass Flywheel - Genuine BMW 21208667195

Thanks again for any help and suggestions!

[toxik]

550i clutch does work with xdrive, you pretty much have to run it if you still want to run any sort of a tune. an oem 340 clutch won’t handle much more power over stock.

[Link112]

Originally Posted by toxik

550i clutch does work with xdrive, you pretty much have to run it if you still want to run any sort of a tune. an oem 340 clutch won’t handle much more power over stock.

Thanks, yeah the previous owner switched to the Spec Stage 2+ to handle the extra power! Love the build BTW! I just want to make sure I have all the correct part#'s. Is there anything from the 550i clutch kit that needs to be changed or added to fit the 340ix, or any other additional parts?

Basically asking for a parts list for those who have made the switch please.

Thanks!!

[toxik]

Originally Posted by Link112

Thanks, yeah the previous owner switched to the Spec Stage 2+ to handle the extra power! Love the build BTW! I just want to make sure I have all the correct part#'s. Is there anything from the 550i clutch kit that needs to be changed or added to fit the 340ix, or any other additional parts?

Basically asking for a parts list for those who have made the switch please.

Thanks!!

thanks man appreciate it.

i haven’t done the clutch replacement myself yet, i want to ride out the stock clutch and then refresh the full clutch and shifter assembly, but i think you need to be past 80k miles to make it worthwhile.

ecs has the 550i clutch kit, you can check under kit contents for full list of parts the kit comes with. that’s all you’ll need for the swap:

https://www.ecstuning.com/b-genuine-...n/21207603248/

[Link112]

Found out the problem. The SPEC Pressure plate had one of the fingers break off, so that's awesome! it mared up the Flywheel as well. I am removing the SPEC 2+ clutch and SPEC single mass aluminum flywheel and putting in the 550I clutch with factory flywheel. Car has 90K and it is to have fun with. Not drag racing, but may try tracking it a couple times.

[B58 parts]

Bummer. Nobody guessed that. Great I just bolted one of those on. That can happen if that side wasn't torqued like the rest. Or otherwise it was uneven somehow..

My 550 clutch lasted 14 months on the stg2+ e50 tune. Don't ever launch it. There was no damage or hotspots or anything like I was expecting, just the pads disappeared quickly. Hope you get better use out of it. It is the way to go if you can get it to last.

[Link112]

Originally Posted by B58 parts

Bummer. Nobody guessed that. Great I just bolted one of those on. That can happen if that side wasn't torqued like the rest. Or otherwise it was uneven somehow..

My 550 clutch lasted 14 months on the stg2+ e50 tune. Don't ever launch it. There was no damage or hotspots or anything like I was expecting, just the pads disappeared quickly. Hope you get better use out of it. It is the way to go if you can get it to last.

How many miles on the 550 Clutch? I'm thinking it is just one of those things. Apparently it was installed in 2021 and had about 30k on it. If I wear out this 550I clutch, I will do the replacement myself. I don't put many miles on it since I don't commute to work.

[B58 parts]

It was about 12,000 MI. I did an aggressive launch one time. Then a few days later a shift into fifth threw the drivetrain malfunction code. And once that starts it's pretty much it. It came back here and there every so often for a few months, then more and more frequently, then the clutch disc slightly damaged code turns to the clutch disc severely damaged code, and then a few days later it won't hold going up a hill.