How to Diagnose a Faulty Flex Disc/Guibo
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- เผยแพร่เมื่อ 5 ต.ค. 2017
- How to troubleshoot a faulty driveshaft flex disc. For this particular video, I will be using my 1997 BMW 540i E39. A flex disc, also known as a guibo is a rubber damper between the transmission flange and driveshaft flange which allows for a smoother driving experience. It dampens take offs, accelerations, changes between gears, and when you remove your foot off the throttle. As you can see this is the rubber flex disc. Over time with age the rubber will eventually deteriorate causing a failure. They will even dry out, become hard, crack, and fall apart in a worst case scenario. I’ll show you the old flex disc in a moment. A faulty or failing flex disc will cause a vibration, this can be found under acceleration at certain speeds or depending on how hard you are accelerating and at higher speeds. As the speed or acceleration increase, the vibration will become worse. At first I had a very mild vibration under hard acceleration and it became significantly worse within a few hundred kilometres. The vibration was noticeable in 2nd and 3rd gear at first, after that I wasn’t able to drive about 50km or 30mph without feeling a vibration. The vibration can be felt throughout the whole car, regardless if my foot was on the throttle or not and having the clutch in or out didn’t affect it either as the driveshaft is always turning. My car has about 260,000km or about 160,000 miles, so it’s hard to say if this is the original part or if it has been replaced at some point. Now here is the old flex disc. As you can see it’s still in somewhat good condition just glancing over, but upon closer inspection you can see cracking throughout the surface. The cracks cause a structural integrity issue which is why the vibrations happen. For replacement, it’s important to use an OEM part or if you know the manufacturer who made it for this vehicle, use that brand instead which may save money than directly buying a part from the dealer. For BMW, FEBI makes these flex disc, but this may vary between years and models. It’s virtually identical, the only real difference with the FEBI part is that the BMW emblem appears to be sanded off. #BMW #BMWe39
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amazing clarity in your voice tone and speech! Much appreciated
Always happy to help and thank you for the kind words :)
Thumbs up for mentioning the arrows that guide the proper installation, i have seen people installing it incorrectly.
Thank you :)
Febi is the sales company, the disk is actually from SGF which can bee seen in your movie. SGF is the OEM, - so you got the perfect original part, no china copy there. SGF stands for Süddeutsche Gelenkscheiben Fabrik, - just in case you wanted to know.. :)
I am late to watch! It's been a busy month. Love the videos, Cutie!
Thank you!
Also, just so everyone knows. The black rubber flex disk is called a "Giubo" (pronounced JOO-bo) and NOT a "Guibo" (GWEE-bo). The name originated from the name of the Italian engineer that designed it, Antonio Boschi. It is a combination of the Italian word for joint, Giunto, and his last name Boschi.
Great info, thank you for sharing!
Tomato, tommato who cares we know what he means
@@deniskanos2043 It matters, sir. Spelling things correctly helps us all when we're searching on the Internet and we're spelling words.
Furthermore, your "tomato" analogy involves pronunciation, not spelling. A double fail there, Denis.
Methinks you might be sensitive to spelling given that your parents chose to not put that 2nd "n" in your name which must have been hell when you were a kid because anyone with a pen could transform your name into something else in 0.5 seconds. :-)
@@4DIYers As the video poster, you could just fix the title of your video at any time to help people who spell it correctly to find your video because John is right; it's giubo, not guibo. Just a thought...
PS - and for the smart asses, I didn't find this video by use of that word. I'm anticipated "ummm... uhhh... you found the video with the misspelling, so... ummm... uhhhh...."
@@BPoweredLove Um the spelling of my name has caused me zero problems because unlike you probably were in school I had no popularity issues and if someone wanted to disrespect me they knew I wouldnt put up with it.
Right on very helpful brother God bless you thank you kindly two thumbs up !
AWESOME just what I knew I needed
Really good info. Thank you.
Wow. This is excellent. This what TH-cam is really about. 👍❤️
Thank you so much!
Legend, awesome vid thanks 👍
Thank you!
Great info, thanks!
lovely voice and nice clean video..respect
Thank you, I really appreciate the feedback!
Thanks mate great help.
Thanks Sr. For the video but I have a question if I may.. I have a 2003 e46 325 ci, and when I'm slowing down I feel a hard shift or clunk ,with you experience would you be able to guess what could be... any help is appreciated since that will save me time and money of course..
Thanks
my 2009 Cadillac cts 4 had a serious vibration on acceleration. Turns out it was a totally worn out carrier bearing. Man I mean it literally was in pieces when my mechanic showed it to me. Thought the problem was fixed until I had to accelerate HARD and discovered I still had a rumbling/vibration directly under center console shift stick . . I am sure its directly above where a faulty Flex Disc/Guibo would be located, probably from the previous owner driving it so long with a worn out carrier bearing,. Thanks for the tip. Will let you know.
I changed the disc on my Land Rover Discovery 1 by myself and I was not aware of the markings.
I want to change it again now - is there a way for me to find out how to install it the correct way?
can i change the same part for chrysler 2014 c300 5.7L ? or i should change all the shaft
can you not get to it in situ with supporting the trans and removing the gbox bracket?
Good job!... Thanks...
No problem, happy to help :)
Thank you!
No problem, happy to help :)
Mines doing the same except its doing it at acceleration not when im over 40mph, only when I accelerate it moves hard and scares the heck outa me, thank you i needed this video
No problem, happy to help :)
Did the new one work? Mines doing the same just a little in 1st and scary when you give it a decent bit of gas after switching to 2nd
@Pink_DOPE11
Stephen Hunt yea i changed it and was perfect wasnt doing it anymore, i was just alittle scared of putting it wrong but i got it
@@je4667 did you replace the rear one or front one?
You mention you feel the vibration even with your foot off the gas. What if you feel vibration exactly as described except when not accelerating. I can be going 60 mph down a highway and it feels like I'm on a roller coaster but the second I let off throttle it gets smooth.
I have the same issue did you fix it ? I have bmw 120 2012
I have had troubles with cheap guibos giving me driveshaft runout & therefore vibration in my Holden VY Commodore which is an Australian built car.
I ran a dial gauge on the front part of the 2 piece driveshaft & it had 0.4mm or 0.016" of runout according to the dial gauge that I used to measure the runout with,I measured it after doing a visual inspection while the engine was idling in first & second gear while I had the rear of the car up on jack stands.
I visually saw a wobble on the front half of the tailshaft so I thought that either the driveshaft is bent or the Guibo is warped so late last night I replaced with an old one which was on the rear half last year,it does have visual cracks in it but I wanted to see if fitting that one would fix the problem.
Note the one which was giving me problems was a new one in early 2022 & fitting an older Guibo actually took the vibration out of the tailshaft which I was feeling in first & second gear.
I will fit a Mackay rubber one which is a reputable brand in Australia !
Great tips, thank you for sharing! It’s tough buying parts anymore, there’s a lot if problems on the aftermarket replacements in general.
Love the video by the way. I actually do have a question about the “giubo “, I’m having vibrations at 20 mph when beginning of acceleration.I can feel it from inside the car when I have my arm on the armrest, this barely started to make vibration noises I have 185852 miles. So the question is that will this cause it due to hard accelerations from coming a dead stop, and switching from Drive to drive sport mode on a 528i with a automatic transmission ?
How long Will I have until the Guibo is finally toast? Y’all replace the support bearing as well?
Thank you! Yes it can be cause from hard accelerations, but switching transmission modes should affect it. How long it'll last depends on how dried out the rubber is. I wouldn't push it though as you may cause something else to fail. You'll need to drop the driveshaft regardless so I would do the support bearing as well. I have a video for that too. Just make sure you get a reputable replacement, if I remember right both were made by Febi.
@@4DIYers thx, I’ve been doing lots research on it, I don’t think it’s the transmission going out because it would go into limp mode then I wouldn’t be able to drive my car at all. Yes I know that I can mess it up big time by continue to drive lot. I’ll definitely looking getting both replaced immediately.
Is it easier to replace the carrier bearing, output shaft seal & front flex disc all at the same time? Meaning the drive shaft has to be removed to do each of them anyhow correct?
Yes that is correct. The center support bearing is a little extra work, but at least you don't have to drop the driveshaft again along with all the other components.
@@4DIYers Thank You
Otherwise from the dealer who can I get a good guibo to purchase for??
As mentioned in the video, Febi makes the Guibos for BMW. So look for a Febi brand replacement from a parts supplier.
Hi, not sure if you'll see this, (4 years after posting) but is there any value in rotating/flipping a flex disk during its life? or would this actually cause more wear?
It only installs in one orientation so you cannot flip it. They're not overly expensive and it's a piece of mind for one less failure point.
Hey dude, i have a bmw 120d and while accelerating there is a nasty knocking sound coming from the gearbox area to under the back seats through the middle of the car, having looked underneither the flex disc has a split in it, do you think thats likely to cause the knocking? Tia.
Yes that would cause the issue you're experiencing.
I need help please, my bmw f10 2010 2.0 diesel automatic shakes uphill at lover RPMs, it feels like something is sliding. Specialy at 3rd. Gear. My gearbox is not reporting any problems at all. Thank you
Did replacing the flex disc solve that problem?! If so which one the rear or front one
Hi I’m only experiencing the vibration/clunking noise really bad as soon as I hit 80mph does that confirm it’s flex disk guibo? I don’t hear any clunking noises at all until I hit 80mph with further acceleration..
I have same problem, did the new guibo helped? :/
Can this also make a rattling sound as you drive? I have been advised that mines near to the end of its life and needs changing but since then I have noticed a rattling only noticeable hearing it with the window open and radio off. Not constant rattle just every now and again. This is on an E92 330D
Hi did you find what was causing rattle? Sounds similar to what I am experiencing at moment. Thanks
@@markbennett3002 I didn't but it sounds a bit like if the exhaust was rattling on the cover underneath the car when i hit bumps. I have my mot soon so I'm sure it will come up then.
@@scud69er thanks for replying. My car is going in garage soon so will get them to check. Hopefully it is just heat shield rattling or something like that
Would I feel shaking in the steering wheel?
Nope, you would on the floor though. Steering wheel shaking is almost always tire related.
Will a rattling noise right under the console area under hard acceleration be because of this as well?
GoombaDeluxe i have the same noise like klongk klongk klongk. Its in the front but when i checked this rubber i saw it was cracked and dry. So im going to replace it first to see if the noise dissapears. What was your noise? Was is the guibo hardydisc?
@@MrKsibra24 I came to find out the noise was a CV joint since it was clunking more in the back area of the driveshaft. Guibo is a bit worn too. I haven't resolved it yet but I'm thinking on just buying a whole driveshaft from either the junkyard or online when I get time.
GoombaDeluxe if the vibration is under the center console area it’s usually a combo of the flex disc and/or the center support bearing. I have the same issue right now with my 330ci and I’m about to fix it !
I have the same symptoms and going to call my mechanic on Monday. Thanks
Would there also be a loud noise you can hear when accelerating?
Potentially if it's in very bad condition.
Mine kept failing on my 1995 Mercedes c22. I don't know why, but I had to change it every couple of months. It was as if it was being stressed too hard or something. All I know is I would get the dreaded thumping noise that seems to be coming from the center of the car every couple of months. I will take it off and it would look like it was punched by Mike Tyson for a couple of months. I loved that car but I had to get rid of it
Is there a rear one too? I replaced the one that mounts up to the tranny and it’s still making the same noice/vibration any help would be appreciated.
There should be one. Check the condition of your driveshaft joints, a worn joint can cause a vibration as well.
Does this also cause the steering wheel to shake slightly?? I know I need the flex disc as it’s got a crack in but unsure if that’s causing my shaking wheel as well…
Nope. A steering wheel vibration could be caused from an issue with the tire, bent wheel, out of balance wheel, rust between the hub faces, wheel bearing, or suspension issues.
@@4DIYers perfect nice one I’ll get it into the garage mate…
The noise I suspect my flex disc to be goes away when I engage my clutch does that sound about right?? Feel vibrations at 40 mph plus
If it has a crack, then it's most likely causing the issue. Also while everything is apart, I would recommend looking at the driveshaft joints too. Worn joints can also cause vibrations and noises.
Man that old disc looks brand new.....compared to mine
Hey mate, great informative vid, I'm hoping it's going to be the last piece of the puzzle for me 🤞🏼
❓I do have a question tho... ❓
The vibration and sound in my e46 rises and drops with the rpm like you mentioned, but it gets slightly louder and clunkier on deceleration, and also when I get down to very low rpm it will occasionally make a higher pitched "clang/clunk" kind of noise, almost like it wobbles enough to clip something metal on metal 🤷🏽♂️
Sorry for the long description, but does that sound similar to what you felt and heard?
Thanks in advance if you or anybody else can answer that for me 🤙🏼
I've been battling to diagnose this for a little while in my E46 as the sound travels through the driveshaft to the back end, so I replaced the centre bearing and uni joint and was puzzled when that didn't fix it..
Was thinking maybe diff or axle next, but after putting it on jackstands and getting underneath while it was running it was clear the sound is up the front end.
It's 430am where I am so I can't start working on the car yet, but after seeing your vid im 99% sure that's my issue as well..
Is your car an automatic or manual? If it’s a manual, it could potentially be a clutch related issue.
My car is manual.
I have since replaced the flex disc and it has slightly helped, and the old flex disc wasnt in bad shape, but the centre hole was no longer a perfect circle.
The triangular shaped part (sorry I'm no mechanic) on the back of the gearbox that the flex disc attaches to with 3 of the 6 bolts, has some scoring on the metal in the exact same spot just to the side of where the bolts go through.
Sorry for my poor description, if you can't decipher my home taught mechanic gibberish I understand aha..
Cheers.
Clutch feels normal at the moment too🤷🏽♂️
Good video. Easier hiring a ramp tho
Thank you :) I think I may invest in some higher ramps, these work good with trucks but lower cars are kind of a paint. Ideally I'd love to get a hoist lol.
i upgraded my headers and exhaust. which made the acceleration much faster. But Know i keep blowing out flex disc. is there a heavy duty one? iv'e been searching. or am i doomed to slower starts.
That is odd and shouldn't happen after only an exhaust upgrade. Is the guibo being installed correctly and is the driveshaft also aligned properly to??? Another issue can also be a cheap aftermarket replacement.
👏👏👏❤️
I have A BMW x3 it's is shaking real bad
Damn that’s crazy
Febi it is not even close to oem! I had both on my hand and I can tell about the quality
If you paid attention in the video, the BMW emblem is removed from the guibo. Also it's well known in the BMW community that BMW uses different parts from different manufacturers which are OE. Lemforder for suspension, Febi for the guibo.
Κυρυαζηςς Χρηστος
Did you experience steering vibrations too?
No I did not. Steering wheel vibrations would be something related to the front wheels. Could be a faulty tire, a wheel out of balance, bent wheel, worn steering components, etc.
I like the way you talk its very easy to understand thanks i sub and liked greeting from Afghanistan 🤍
Thank you so much for the kind words and support!