Clunk noise releasing clutch or accelerator pedal

[blob84]

Hi,

I could not find the same issue in the forum so I've thought I should post here.

My T28 102 Trandline swb (T6) 65 plate with 81k does a clunk noise when I release the clutch (all gears but more noticeable in 3rd an so on) as well as when I release the accelerator pedal. I can hear it if the window is open.

New clutch and dual mass fitted at 79.6k by the last owner (including Cambelt and water pump).

The van drives very well, quite happy with it but this noise just bother me.

Any idea before I get it to a garage? Transmission issue?

Thanks in advance

 

[Howzat]

Don't have an answer for you but mine clicks (rather than clunks) when lifting the clutch occasionally and like you I only notice it when the window is open so I'll be interested to hear the outcome of your investigation.

 

[blob84]

Ok .. could not wait and put my head underneath on the driverside and there is a leaking (couldn't fine any trace on the driveway previously) that seems coming from the driveshaft...greenish

CV boots looks "ok" and not damaged...

Could be the driveshaft star failing and making that noise?

 

[DXX]

I think you’ll find the outer cv boot has a small split, that grease has been leaking out for a while.
Best to clean the whole area with de-greaser, drive a few miles and check again.

 

[blob84]

So perhaps it has been loosing grease and so the noise appeared (hopefully not major failure)

 

[DXX]

So perhaps it has been loosing grease and so the noise appeared (hopefully not major failure)

Almost certainly a CV joint failure but clean it, drive and re-check for grease spillage.
On some vehicles it’s possible to remove the outer joint by positioning at full lock, not sure about a Transporter.

 

[Howzat]

With the noise and all that grease I'd be straight round to my mechanic before driving for much longer and risking a more expensive repair. Good luck.

 

[blob84]

Thank guys

I have booked the van in for the earliest appointment (15th of July) for the CV joint and boot replacement (VW authorized garage).

I have been quoted 180 bucks for it, how does it sound?

No van for the weekend

Cheers

 

[Littleblackflash]

Sound good value to me.

 

[DXX]

Thank guys

I have booked the van in for the earliest appointment (15th of July) for the CV joint and boot replacement (VW authorized garage).

I have been quoted 180 bucks for it, how does it sound?

No van for the weekend

Cheers

Euro Car Parts outer CV joint with discount is £40 (pattern part), not sure if this includes the boot.
I’ve had good and bad experiences with pattern part CV joints, some are re-ground but the case hardening is not re-worked so soft as chocolate for the want of a better word. The two I have on my car now were about £12 each and have been there years so it’s a case of suck it and see.
I remember somebody telling me that the T5 had issues with failing drive shaft splines, not sure if this is any different on a T6.
Anyway let us know what’s found.

 

[blob84]

UPDATE

The driver side cv joint was replaced along with the boot as for the booking.

However, the noise has not gone. If for one hand I'm happy to have replaced that faulty part, I cannot get a quite sleeping without solving this issue.

The mechanic who changed the parts did not noticed any issue.

What else could be?

-Egine supporst? (Not sure about this)
-Gear box bearings? (somebody suggested this..)

Perhaps an option would be to have a proper test drive with an VW expert along.

 

[DXX]

UPDATE

The driver side cv joint was replaced along with the boot as for the booking.

However, the noise has not gone. If for one hand I'm happy to have replaced that faulty part, I cannot get a quite sleeping without solving this issue.

The mechanic who changed the parts did not noticed any issue.

What else could be?

-Egine supporst? (Not sure about this)
-Gear box bearings? (somebody suggested this..)

Perhaps an option would be to have a proper test drive with an VW expert along.

If they smashed the CV joint into the gearbox with a hammer who know what’s been affected. The dents didn’t look like a couple of light taps.
I hope you have photos and emails with the Garage admitting their error, something to fall back on later if needed.

 

[blob84]

If they smashed the CV joint into the gearbox with a hammer who know what’s been affected. The dents didn’t look like a couple of light taps.
I hope you have photos and emails with the Garage admitting their error, something to fall back on later if needed.

So, do you think the garage haven't done what they supposed to do or (even worse) further damaged it?

I've got the old cv joint and boot with an evident split/cut on it but I haven't check the joint yet (not sure if can understand if it was badly damaged)

 

[Howzat]

There's another thread with a similar sounding issue and the guy found a way to replicate the sound while the van wheels are off the floor here which may be handy for a mechanic to source the problem. Mine is due for work early next month so if I get to the bottom of my similar sounding issue I'll post back.

 

[DXX]

So, do you think the garage haven't done what they supposed to do or (even worse) further damaged it?

I've got the old cv joint and boot with an evident split/cut on it but I haven't check the joint yet (not sure if can understand if it was badly damaged)

A worn CV joint noise will increase as the amount of angle is a increased. Outer CV joint when steering is in full lock is a good indication.
Inner CV joints usually last much longer unless the boot is split. In fact I can’t remember ever having one fail on any of my vehicles.
If it’s a CV joint it is audible as a loud click.
In the past with poor judgement I drove on one until it physically locked up, my advice is don’t do this. The only way I got it free was to jack the car up and let the suspension sag.
@Howzat has made a good suggestion by getting both wheels off the ground on stands and try to diagnose, at least get a ball park area where the noise is coming from.
You could then try switching left and right drive shaft positions and see if the noise remains in the same place. If it does it isn’t the drive shaft / CV joints.
More labour but no parts consumed.

 

[Howzat]

I might be wrong here which wouldn't be the first time but I think the CV is a red herring as the noise was happening prior to any work being done and remains after the CV has been fixed. I'm fairly certain mine is somewhere in the clutch-gearbox-driveshaft region which doesn't narrow it down much. Would really need to get underneath when it's up on ramps while someone tries to rock the wheels in gear to get a better idea.
I normally hear it when driving past a wall or house with the passenger window open. Can't hear it inside the van or feel it through the floor like you normally do when steering components fail. Anyhows talk is cheap so I'll update when I have something more concrete to add.

 

[BrewDon67]

Hi,

I am having a similar problem and was just wondering if yours was resolved?
I have a 67 plate T6, manual SWB, that’s done 65k.
I bought it 5 months ago - when I test drove it I noticed a clanging noise when I pushed on the accelerator, the dealership said it was the ‘bush plates’ and “replaced them”. The clanging noise came back a few weeks ago and then I started to get a rattling noise from under the car when driving in 2nd and 4th gear. Took it to a garage today and they think the gearbox needs replacing but have suggested I take the van to a VW specialist first.
… I rang the dealership I bought the van from and explained the situation (I’m still protected by trading standards, because I bought the van with I the past 6 months, so technically the original dealership need to fix the problem) I just want to make sure that I have as much information as possible before going to the dealership.

Any help/advice appreciated Thanks

 

[Howzat]

I don't know what bush plates are??
1. Did they supply an invoice showing any other description or part number?
2. So the noise was fixed then came back a few weeks later?
Not sure if the new rattling noise is related but I do know that 2nd and 4th are in a similar trajectory for the gear linkage so hopefully it's a link to the gearbox rather than the gearbox itself that's making the sound. Other than that I'm clueless.
Mine's still making the clicking sound when accelerating or decelerating and hasn't been checked yet as it's not been to a mechanic for anything else the last few months other than the MOT and that passed without issue.

 

[BrewDon67]

Thank you. It’s being checked over by a VW specialist tomorrow, so will let you know what they say… put it this way, when I rang them and told them the ‘bush plate’ story, they laughed. So the dealership have obviously messed me around.

 

[J88arv]

Any update here??