I think I may have very early stages of DMF failure

**John LE** · 23rd April 2012, 19:38

I can here a slight metallic rattle when revved with the clutch down......sound like the DMF?

Not particularly worried about it at the moment but just want to know

**Signum-Steve** · 23rd April 2012, 19:40

Have you checked out your heat shield John?
Just a thought.

**neill** · 23rd April 2012, 19:41

my dmf has been rattling for months but i dont get it when the clutch is pressed down

**lofty** · 23rd April 2012, 19:42

Sounds like it to me. This was my very first symptom, sounds like it's coming from the passenger footwell and more so when you release the accelerator pedal?

**John LE** · 23rd April 2012, 19:43

Originally Posted by DTI-Steve

Have you checked out your heat shield John?
Just a thought.

Well that was my first thought bud but the rattle is only there with the clutch pedal pressed down. If I rev it with the pedal up there is no rattle.

That's why I think it may be the outer plate of the dmf rattling when there is no load on it

Originally Posted by neill

my dmf has been rattling for months but i dont get it when the clutch is pressed down

Even when you give the engine a rev?

**John LE** · 23rd April 2012, 19:45

Originally Posted by lofty

Sounds like it to me. This was my very first symptom, sounds like it's coming from the passenger footwell and more so when you release the accelerator pedal?

Bingo, that's exactly what I get.....how long before it gets really bad?

**lofty** · 23rd April 2012, 19:52

Originally Posted by John IS3

Bingo, that's exactly what I get.....how long before it gets really bad?

My hatch was doing this but I didn't know it was the dmf at that point and it lasted like that for over 6 months without getting worse (in fact it was no different when I sold it and I only realised it may have been on its way since getting the estate).

My new estate had the same symptoms and took a few months before the engine started to sound rough. I wouldn't worry about the slight rattle until the engine starts to sound rough and you can feel the change when you press the clutch down.

Edit: Another point on my hatch: Although I had the rattle the car drove great. My estate sounded like a bag of spanners until I got the DMF replaced and now it drives soooo smooth and the fuel economy has gone up slightly.