I have a 2007 Volvo c30 D5 automatic(you can also drive it in manual)
Was driving to a friends and the car started making a grinding/metal on metal crunching noise.
Pulled over, couldn't see anything oblivious, carried on as friends was only 100 feet away.
Noise got worse so decided to tow my car home in neutral. car continued to make the noise even though it was tuned off and in neutral whilst being towed.
tried to tow the car to the garage last night as its only 10 mins away, started towing it, bits of metal started dropping out of the bottom of the engine bay.
At first I thought it was the dual mass flywheel failing as it was due to be replaced in the not so distant future(getting vibrations from it, etc) but the bits of metal i found on the road didn't look like parts off a DMF, they looked like they formed a circle similar to that of a driveshaft bearing, there was also quite a large ball bearing on the floor and the parts where covered in thick sticky oil not the usual thin flowing oil you put in the engine.
Here's the questions I have:
If the dual mass flywheel failed would it cause the noise to be made in neutral ? I'm not sure how they work but I thought they where only engaged when the car was in gear(same as the clutch)
If the driveshaft bearing has destroyed itself what other damage could I have done towing it ?