Replacement Clutch due to vibration noise (Was:Replacement Flywheel

Phil №❶ · **Reply #30: October 17, 2014, 11:27:57**

Does that mean we will never know, or can you ask to see the part.

Mac · **Reply #31: October 17, 2014, 11:56:06**

In light of Lorians update I'm tempted to think its a turbo issue, because not having driven another I can't say for sure, but the boost from the turbo is very tame and seems stunted by this mystery vibration. Ours has already been in for various bits to try to eliminate it but still the noise persists.

If the flywheel has been replaced and it's still happening, there's definitely another cause. Mine is going in next week to see what can be done. Il keep updating with progress.

cruiserfied · **Reply #32: October 17, 2014, 12:14:54**

Quote from: Mac on October 17, 2014, 11:56:06

In light of Lorians update I'm tempted to think its a turbo issue, because not having driven another I can't say for sure, but the boost from the turbo is very tame and seems stunted by this mystery vibration. Ours has already been in for various bits to try to eliminate it but still the noise persists.

If the flywheel has been replaced and it's still happening, there's definitely another cause. Mine is going in next week to see what can be done. Il keep updating with progress.

Does yours have a vibration or is it just the noise? There is the ECU upgrade for a rattle/knocking noise around 1800rpm but if you can feel a vibration it won't be that.

Mac · **Reply #33: October 17, 2014, 12:33:39**

Quote

Does yours have a vibration or is it just the noise? There is the ECU upgrade for a rattle/knocking noise around 1800rpm but if you can feel a vibration it won't be that.

It's more of a noise than a physical vibration, the noise is audible from outside as well. very strong from 3rd through to 6th gear under hard acceleration. That is why hyundai have found it hard to replicate in workshop. They acknowledge it's there and state they will sort it but don't know what it is.

I might ask about ecu updates and see what they say.

constipated · **Reply #34: October 17, 2014, 14:45:47**

Quote from: Mac on October 17, 2014, 12:33:39

Quote
Does yours have a vibration or is it just the noise? There is the ECU upgrade for a rattle/knocking noise around 1800rpm but if you can feel a vibration it won't be that.

It's more of a noise than a physical vibration, the noise is audible from outside as well. very strong from 3rd through to 6th gear under hard acceleration. That is why hyundai have found it hard to replicate in workshop. They acknowledge it's there and state they will sort it but don't know what it is.

I might ask about ecu updates and see what they say.

I have the U2 engine and think I have the same symptom you describe. I'd call it a loud humming between about 1700 —1900 rpm and a minor vibration. I'd also been thinking it was related to the turbo spooling up with the engine under load. Contrary to my previous post I now think it is more evident in 3rd gear onwards. I am starting to wonder if it's just a normal phenomenon.

Mac · **Reply #35: October 17, 2014, 15:23:14**

As per above,

Sounds exactly like ours, small physical vibration but loud aural vibration under load 15 - 1900rpm from 3rd up to 6th. Nothing in 1st gear and almost nothing in 2nd gear. Damn frustrating!

Otherwise the engine is great.

Mac · **Reply #36: October 17, 2014, 18:25:46**

Found this on another forum! Possibly clutch issue, Im still adamant its turbo related though!

"I have seen this in Hyundai CRDi engines also, although the "vibration" in this case is just really minimal. The whole car does not shake because of this. And the Hyundai service engineer claims that is a design flaw with the clutch which gets triggered when the turbo comes on???"

asathorny · **Reply #37: October 17, 2014, 19:07:50**

Quote from: Phil №❶ on October 17, 2014, 11:27:57

Does that mean we will never know, or can you ask to see the part.

I guess where never gonna know Phil and I have been sat here, on the edge of my seat, busting a gut to know the answer to this riddle <sigh>

Life's full of disappointments ain't it

Lorian · **Reply #38: October 17, 2014, 20:34:35**

With further driving today, vibration seems to have NOT been fixed by the new flywheel, and now I have a stiff/notch gear change to go with it - it used to be really slick.

Guess I need to call the dealer again on Monday, but given I only have a few weeks left on the warranty I don't like the way this is going.

Lorian · **Reply #39: October 17, 2014, 20:38:40**

Quote from: constipated on October 17, 2014, 14:45:47

I have the U2 engine and think I have the same symptom you describe. I'd call it a loud humming between about 1700 —1900 rpm and a minor vibration. I'd also been thinking it was related to the turbo spooling up with the engine under load. Contrary to my previous post I now think it is more evident in 3rd gear onwards. I am starting to wonder if it's just a normal phenomenon.

My car didn't use to do it though - its only just started in the last few months. Generally my hearing hasn't improved over that time.

Also I note that when the noise is occurring if I even VERY lightly touch the clutch it instantly stops until its released.

Asterix · **Reply #40: October 17, 2014, 20:52:00**

Quote from: Lorian on October 17, 2014, 20:34:35

With further driving today, vibration seems to have NOT been fixed by the new flywheel, and now I have a stiff/notch gear change to go with it - it used to be really slick.

Guess I need to call the dealer again on Monday, but given I only have a few weeks left on the warranty I don't like the way this is going.

You have made your claim before end of warranty. It's not your problem if Hyundai can't fix it before warranty expire.

Phil №❶ · **Reply #41: October 17, 2014, 21:58:11**

It would appear that it is a manual thing. You simply don't get this with the auto, however, the auto doesn't have this type of clutch, or flywheel, so it doesn't help much, except to rule out the motor itself.

cruiserfied · **Reply #42: October 18, 2014, 06:08:40**

Quote from: Mac on October 17, 2014, 12:33:39

Quote
Does yours have a vibration or is it just the noise? There is the ECU upgrade for a rattle/knocking noise around 1800rpm but if you can feel a vibration it won't be that.

It's more of a noise than a physical vibration, the noise is audible from outside as well. very strong from 3rd through to 6th gear under hard acceleration. That is why hyundai have found it hard to replicate in workshop. They acknowledge it's there and state they will sort it but don't know what it is.

I might ask about ecu updates and see what they say.

The upgrade is more for a diesel knock around 1800-2200rpm so probably not it.

cruiserfied · **Reply #43: October 18, 2014, 06:17:34**

Quote from: Lorian on October 17, 2014, 20:38:40

Quote from: constipated on October 17, 2014, 14:45:47
I have the U2 engine and think I have the same symptom you describe. I'd call it a loud humming between about 1700 —1900 rpm and a minor vibration. I'd also been thinking it was related to the turbo spooling up with the engine under load. Contrary to my previous post I now think it is more evident in 3rd gear onwards. I am starting to wonder if it's just a normal phenomenon.

My car didn't use to do it though - its only just started in the last few months. Generally my hearing hasn't improved over that time.

Also I note that when the noise is occurring if I even VERY lightly touch the clutch it instantly stops until its released.

Has the clutch plate and cover ever been replaced? It could be the springs in the clutch plate, or the fingers of the clutch cover. Flywheel is already ruled out. Might even be thrust bearing vibrating.

Notchy gears could be cables routed wrong. Hopefully they put oil back in box.

Phil №❶ · **Reply #44: October 18, 2014, 10:33:33**

The forum really appreciates your contributions cruiserfied

You are like another pair of eyes ( and qualified ,too.).

Mac · **Reply #45: October 18, 2014, 13:01:07**

Even if this is a flywheel or clutch issue our car is approaching 50k miles, which for a diesel in particular is nothing. The car has a full main dealer service history and since I came to recognise this issue we haven't realy done a great deal of miles in it so it can't be said its been neglected.

I'm tempted to try pressing the clutch down during the "activation" of the noise as Lorian suggested but I'm almost certain it will stop it once the clutch is pressed. This still does not eliminate the turbo from the issue as it only makes the noise under load anyway.

Lorian · **Reply #46: October 18, 2014, 14:29:46**

Quote from: cruiserfied on October 17, 2014, 12:14:54

Does yours have a vibration or is it just the noise? There is the ECU upgrade for a rattle/knocking noise around 1800rpm but if you can feel a vibration it won't be that.

The vibration on mine is definitely secondary to the noise. It's smack on 1800rpm it starts.
Could you tell me the TSB number please?

Since the flywheel was done the vibration at idle seems back t normal. Its all so subjective though.

cruiserfied · **Reply #47: October 18, 2014, 14:32:47**

Quote from: Lorian on October 18, 2014, 14:29:46

Quote from: cruiserfied on October 17, 2014, 12:14:54
Does yours have a vibration or is it just the noise? There is the ECU upgrade for a rattle/knocking noise around 1800rpm but if you can feel a vibration it won't be that.
The vibration on mine is definitely secondary to the noise.

Could you tell me the TSB number please?

Sorry Lorian but I can't. You'll have to get your dealer to search it.

Lorian · **Reply #48: October 18, 2014, 14:34:24**

Yes, sorry I shouldn't have even asked, I understand.

cruiserfied · **Reply #49: October 18, 2014, 14:53:40**

Quote from: Lorian on October 18, 2014, 14:34:24

Yes, sorry I shouldn't have even asked, I understand.

I have no problem with you asking. That's how questions get answered

Thanks for understanding.

Lorian · **Reply #50: October 18, 2014, 15:03:38**

Is it possible to confirm that is for the 1.6CRDi though, not the 2.0?

Thanks.

cruiserfied · **Reply #51: October 18, 2014, 15:13:28**

Yeah for 1.6CRDi we don't have 2.0CRDi in Australia.

Lorian · **Reply #52: October 18, 2014, 15:35:34**

Thanks.

constipated · **Reply #53: October 19, 2014, 04:52:45**

If this was a clutch/flywheel issue, is there a reason why the vibration or noise would only happen at certain rpm ie 1700-2000.
If it's turbo-related it might make sense in that this is the rpm where the turbo spools up.

Another perhaps unrelated symptom I have noticed, when the car is idling and I just rest my foot on the clutch, I can feel it pulsating. No issue when I push further or let it out completely. Does this mean anything?

cruiserfied · **Reply #54: October 19, 2014, 09:25:58**

Quote from: constipated on October 19, 2014, 04:52:45

If this was a clutch/flywheel issue, is there a reason why the vibration or noise would only happen at certain rpm ie 1700-2000.
If it's turbo-related it might make sense in that this is the rpm where the turbo spools up.

Another perhaps unrelated symptom I have noticed, when the car is idling and I just rest my foot on the clutch, I can feel it pulsating. No issue when I push further or let it out completely. Does this mean anything?

The clutch/flywheel is only spinning as fast as the engine so in principal it is the same as you describe for the turbo.

I can only imagine that with foot only resting on pedal that the thrust bearing is moving with the minor insignificant differences in clutch cover finger height/tension. When you push down harder it equalises.

Lorian · **Reply #55: November 13, 2014, 18:30:37**

Early days but it appears this 1800rpm+ vibration/rattle has been fixed by a 3 part clutch kit. Warranty

Phil №❶ · **Reply #56: November 13, 2014, 18:43:33**

What were the 3 parts

Lorian · **Reply #57: November 13, 2014, 18:57:24**

Clutch plate, cover and release bearing, its all ordered as one kit.

Paolo5 · **Reply #58: November 15, 2014, 01:37:43**

Hi Lorian,
I am happy for you that this problem has now (hopefully) been fixed.

Has the workshop stated why the old clutch developed this problem after such a relatively small number of miles/kilometres?

Does this mean that the dual-mass flywheel was also a culprit, or was it replaced under warranty needlessly?

Paolo5

Dazzler · **Reply #59: November 15, 2014, 02:36:51**

I thought the clutch wasn't normally covered under warranty

Replacement Clutch due to vibration noise (Was:Replacement Flywheel - 1.6CRDi)