Dual Mass Fly Wheel symptoms???

[Chrisman]

Had a listen too and is a different sound from mine.
When i start the engine then go to the bonnet I hear a definate clattering sound as if there are a few pieces of metal rattling around until it settles.
Yours sounds no where near as exciting...yet mate if it is the DMF

[RK3559]

I honestly can't tell. It does sound noisy but not so noisy that I would panic. I have old ears which don't help with noise diagnosis.

I just noticed that turning off the AC the sound of the engine was OK. Perhaps the load of the AC compressor changed the sound making it somehow DMF-ish.

My fellow mechanic told me to listen for a klang-klang sound when starting or stopping the engine.

So far I am safe. Apologies for my over-thinking, but I have a BKP engine and that seems the worst thing VW engineered so far.

Cheers

Sent from my GT-N7000 using Tapatalk 2

[VWOwner5]

Hi, I've just joined the forum to look for Dual Mass Flywheel issues. The video clip you've posted (#9) sounds just like my (2 year old - TDI blumotion) VW Sharan which is being investigated at dealership - thankfully still under warranty. Mechanic said they've found iron filings in gear oil and are stripping things down to identify where they came from. Last thing we expected from car with under 20K miles on clock.

What's odd is gears seemed to be okay changing, rarely slipped and no unusual juddering. Main symptons of concern was the loud "tapping/rattling" noise when engine running in neutral - which would disappear when Clutch peddle pressed and noisy at traffic lights/stationery traffic. You could also hear the tapping/rattling at low speeds (30mph) with windows open and in gear.

I wasn't sure whether to post this under the VW Sharan threads, put thought I'd comment on your question.

I'm glad you got it sorted.

[martin1810]

Sounds like you have play in the gearbox input shaft, this often gets quieter when you depress the clutch.

[DSG4ME]

DMF sounds like pebbles in a washing machine, clutch action to stop it means as Martin said a layshaft or at best a thrust bearing.

[VWOwner5]

Sounds like you have play in the gearbox input shaft, this often gets quieter when you depress the clutch.

Thanks for info, would that also explain the iron filings in the gear box oil and what's likely to cause this in a newish car with low mileage?
Interesting the garage's not suggested it yet.

[martin1810]

Thanks for info, would that also explain the iron filings in the gear box oil and what's likely to cause this in a newish car with low mileage?
Interesting the garage's not suggested it yet.

A worn bearing or a bearing turning in it's housing can cause the fault but not usually the iron filings. Occasionally a shaft will have faulty case hardening and then it wears very quickly, that is just random bad luck.

[VWOwner5]

A worn bearing or a bearing turning in it's housing can cause the fault but not usually the iron filings. Occasionally a shaft will have faulty case hardening and then it wears very quickly, that is just random bad luck.

Hi Martin, garage got back - Not a worn bearing. They said springs in clutch broken and caused damage to gear box as well. They've stripped everything and replacing with new clutch, but rebuilding the gear box - using parts on order from Germany. They're not sure when parts will arrive nore did they say which ones. I did suggested they just put a new gear box in since it's still under warranty, but they stuck to rebuilding it.

[DSG4ME]

Hi Martin, garage got back - Not a worn bearing. They said springs in clutch broken and caused damage to gear box as well. They've stripped everything and replacing with new clutch, but rebuilding the gear box - using parts on order from Germany. They're not sure when parts will arrive nore did they say which ones. I did suggested they just put a new gear box in since it's still under warranty, but they stuck to rebuilding it.

I think theres some BS going on there, even if the springs are shot (which I guess they are) unless something has let go and made it's way into the gearbox there shouldn't be any need for GB work, and if that has happened they won't be re-building it anyway as it will need a new casing.

[rose5691]

Hi, I know this thread is old but am desperate to sort a problem- Audi A3 2l Tdi, 2005. When you switch the engine off there is a horrible rattle and nobody seems to be able to get to the bottom of it. Do you have any ideas?
Thanks,
John.