Annoying Rumble On Overrun

[Seatdriver]

Hi all,

 

2005 130bhp alhambra stylance now done 29000 miles.

 

Still trying to locate what is causing the annoying dry bearing sound when you accelerate hard in any gear and take engine off load ie off accelerator and depress clutch during hard acceleration (revs around 2000 rpm), or rev when static with clutch down again to 2000 ish rpm. Has no detremental effect on the running of the car its just annoying.

 

Oh I checked my sisters 130 alhambra stylance same engine code and it mkes the same sound?

 

Seat to their credit have had the car in several times and admit they hear the noise but cannot locate. I fully undestand this as I have been all over the engine and gearbox and cannot locate the source.

 

I suspect now its either the DMF going noisy (dont know why) or the variable vanes in the turbo chattering as they return to the open position yet the turbo is still spinning very fast.

 

Whatever it is its beginning to bug me and we will be parting company shortly if the source isn't found.

 

Penny for anyones thoughts

[paulh]

Hi all,

 

2005 130bhp alhambra stylance now done 29000 miles.

 

Still trying to locate what is causing the annoying dry bearing sound when you accelerate hard in any gear and take engine off load ie off accelerator and depress clutch during hard acceleration (revs around 2000 rpm), or rev when static with clutch down again to 2000 ish rpm. Has no detremental effect on the running of the car its just annoying.

 

Oh I checked my sisters 130 alhambra stylance same engine code and it mkes the same sound?

 

Seat to their credit have had the car in several times and admit they hear the noise but cannot locate. I fully undestand this as I have been all over the engine and gearbox and cannot locate the source.

 

I suspect now its either the DMF going noisy (dont know why) or the variable vanes in the turbo chattering as they return to the open position yet the turbo is still spinning very fast.

 

Whatever it is its beginning to bug me and we will be parting company shortly if the source isn't found.

 

Penny for anyones thoughts

 

Can't help with the sorce but I've just had the head replaced on my 1.9tdi and I've noticed the same noise happening. I thought it was gearbox/clutch as it happens when you change gear but you have made me think it could be turbo related. What sort of noise is it? I get what sounds like 2 or 3 whirring squeaking sounds, almost like a squeaky electric motor winding down. Seems to be worse when the car is cold although it does happen occasionally when up to temperature.