Superb II, clutch judder/hesitant accel & loud rattle from cold

[danm]

Hi All,

 

I havn't posted on here for years, so hope I am in the right forum/topic;

 

I have a Superb II 2.0 CR, 6 speed diesel, with 56k on it.  I have owned it since 22k.

It has an intermittent fault I would love to hear some advice from people on... when starting from cold and pulling away it makes a loud rattle (marbles in a washing machine)

and is very hesitant to pull away, the more gentle with the powe rthe less likely to happen,  If I dip the clutch then the noise stops immediately.  It stops after about 5 mins/2 miles or once the engine is up to temperature.  Its mostly evident in second or third at around 2-3k revs.

 

Of course it doesn't do it consistently enough for me to get it to happen in front of a dealer, this has been going on for 2 months 3kmiles.  I did get an engine diagnostic which was all-clear

 

I did speak to a good indy garage, they thought perhaps DMF and apparently the associated lumpy running could be due to the speed sensor which runs on the flywheel??

 

 

Many, many thanks for any useful help, as this is ruining the ownership of an otherwise great car for me.

[psycholist]

Mat be a combination of a failing DMF and the very common juddery/snatchy clutch behaviour while the car is cold.

[danm]

Thanks,

 

That's for the advice,

 

What's the opinion on waiting for a DMF to be bad enough to be reliably diagnosed/changed versus waiting too long and it breaking, Is 'breaking' a disaster or just a recovery truck to a garage?  Do they get progressively worse, or just blow up suddenly?

 

Thanks again

 

 

[numskull]

A DMF fully failing and breaking-up would be a disaster from what I've read. Get it to a Skoda Dealer for diagnosis ASAP.

[silver1011]

A lightly juddering DMF can often be left until the symptoms become more advanced.

 

"Marbles in a washing machine" needs immediate diagnosis.

[peterposh]

I had similar symptoms on a mondeo , went quiet when I dipped the clutch. It went really noisy like it had marbles in it when I was down in Cornwall but managed to drive it home at 50 mph, about 150 miles . The dmf had failed .

[danm]

Thank you all for responding,

 

The nasty marbles noise is  and only for a couple of minutes whilst car warms up and only every other day or so, I think I will just drive gently and locally until it is frequent enough to take back into the garage for a check up, I did leave it with a good garage for a couple of days and of course it didn't mis-behave... intermittent faults... you gotta love them. 

 

Does anyone know of anything I can do/test that is likely to show it up?

 

ta

[Noddy90]

It's almost certainly a failing DMF - the clue is that it disappears when you dip the clutch: classic symptom.  If so, this is going to cost you deep in the purse; there's no getting away from it.  Get the clutch replaced at the same time.

[bigjohn]

It's almost certainly a failing DMF - the clue is that it disappears when you dip the clutch: classic symptom.  If so, this is going to cost you deep in the purse; there's no getting away from it.  Get the clutch replaced at the same time.

 

If fitted with a concentric slave cylinder(fits over input shaft) - change as part of the clutch

[danm]

Hi All,

 

thanks for all the advice, its still dying slowly, but not consistently enough to get a garage to look, am going to see if my friendly independent will keep it for a couple of days again and try it from cold.

 

will keep you all posted

 

I have a mate in the parts trade he is quoting £350 for a quality DMF and Clutch kit + I am expecting the thick end of 600 labour, and to cap it all the sodding window regulator cable has just snapped, the car  has only done 60k mostly motorway, this is not the reliability I was hoping for!

 

I will report back on how this one fetches up.

 

D.

[bigjohn]

Hi All,

 

thanks for all the advice, its still dying slowly, but not consistently enough to get a garage to look, am going to see if my friendly independent will keep it for a couple of days again and try it from cold.

 

will keep you all posted

 

I have a mate in the parts trade he is quoting £350 for a quality DMF and Clutch kit + I am expecting the thick end of 600 labour, and to cap it all the sodding window regulator cable has just snapped, the car  has only done 60k mostly motorway, this is not the reliability I was hoping for!

 

I will report back on how this one fetches up.

 

D.

 

If it finally collapses it can take out your gearbox bell housing, usually meaning a new gearbox (lots of £1000's) - I wouldn't leave it too long 

 

Change the clutch pressure plate for something that isn't Sachs (this can fail on the 6 speed 2.0Diesel writing off the gearbox by machining through the casing) and don't forget to replace the concentric slave cylinder whilst you are in there (cheap part)

Edited 8 January, 2016 by bigjohn

[Jamsco]

Had a DMF go on a Mondeo when holidaying in the West Country. Lost the car for 2 days at an independent garage in the back of beyond and also lost more than £1700. The clutch went too. I have heard of some people replacing the DMF with with a non DMF.

[danm]

My Superb is in tomorrow for DMF and Clutch, so will report if this is a fix.

 

Went for the LUK kit as it seems the best quality available - though list price is expensive.

[numskull]

Mat be a combination of a failing DMF and the very common juddery/snatchy clutch behaviour while the car is cold.

Yup, that's what it'll be. I had the rattle on ours and, thank gawd, the dealer got the DMF replaced under warranty a couple of days before it ran out. Sorry to say it's an expensive fix...

EDIT....Hmmmm... that'll teach me to read the whole thread! Pleased you've got the fix underway...

Edited 20 January, 2016 by numskull

[danm]

Not a happy bunny,

 

Clutch and DMF replaced... guess what, still:

 

• judders/rattles/won't pull away cleanly as though fuel starved,
• symptoms disappear when clutch is depressed (much like me currently)
• this all lasts till its up to temperature/2miles driving. 
• worse when driving up hill. 
• happens in any gear
• typically between 1700-2250 revs.

 

Only silver lining is DMF job was cheap at £630 LUK parts and labour, and my mechanic said the DMF was 'shagged' so not the culprit but in need of replacement anyway.

 

I am starting to think sensors or injectors again, but the diagnostic found nothing a few months back when I tried it, perhaps I need to find a diagnostics specialist who can drive it form cold plugged into a diag.computer.

 

 

Any thoughts chaps?

[dstev2000]

Checked the fuel filter? 

 

Sounds like fuel starvation. 

 

Diesels usually drink more fuel when cold so that would make the problem worse. 

 

Usually, a blocked fuel filter won't trigger any major faults. Do you know if/when it was last changed? 

[danm]

It would have been done 8k ago,

 

My mechanic is going to check the engine temp sensors next, although no error codes, VW temp sensors are a bit iffy, there is a green plastic (revised version) available for the one in my car,  and he thinks it may be mis-fueling due to dodgy info from the sensor.  

[danm]

Wasn't that...

 

Went to a specialist injection garage... and had my car checked - the diagnostics had no fault codes but showed 2 cylinders poorly performing when cold - when removed and tested 2 injectors were a fail on their Bosch testbench kit - not out by loads, but not coding to the ECU properly, so having 2 new ones fitted £185 ea. + diagnostics + testing costs - ouch,

 

Superb 2010 2.0 CR 140 Bosch injectors.

 

Dear God let this be the last cost for this effing problem.

will report back if its fixed it.

[peterposh]

A misfire can be a cause of DMF failure apparently

[danm]

2 new injectors fitted - so far no nasty noises/behaviour after 3 cold starts

 

Thomas fuel injection services - Blyth,  Northumberland.   seemed to know their stuff, nice guys, final bill £700 for diagnosis, removed all 4 injectors, cleaned and tested, then supply and fit 2 recon by Bosch injectors.

 

Get a proper diagnosis, and make sure it is done when the car is being driven - not a single fault showed up on 4 diagnostics, despite the car kangarooing up the road.

[silver1011]

Glad it is sorted, sounds like the car needs to be a keeper then after spending a fair chunk of cash on it!

[danm]

No kidding!

 

I miss my old MK1 Octavia's reliability tho'  125k on standard services, a new wiper motor  and a temp sensor.