D5 noise/vibration

sixof1 · Nov 15th, 2017, 13:38

Does anyone have any tips or recommendations for reducing noise/vibration from the d4/d5 engine? I have read about supposed improvements from oil changes, using premium fuels with higher cetane rating and even changing engine mounts. Any views or experiences? Thanks.

green van man · Nov 15th, 2017, 16:49

Sorry cannot help, my D5 has no untoward noise or vibration. If yours has the first thing I would be looking at is engine mounts.

Paul.

xco · Nov 15th, 2017, 16:52

Check that the engine cover is on properly (grey or black).

sixof1 · Nov 15th, 2017, 18:08

Am I right in thinking there is some sort of vibration damper available?

green van man · Nov 15th, 2017, 18:18

Quote:

Originally Posted by sixof1

Am I right in thinking there is some sort of vibration damper available?

There is a top engine bracket which acts to steady the engine. If the rubber bushes in that are in poor condition it could give your symptoms.

Paul.

sixof1 · Nov 15th, 2017, 18:30

I thought there was some sort of additional circular damper that could be added to counteract vibration. They use a similar device on helicopter rotor heads, I once did a data analysis exercise on it.

cheshired5 · Nov 15th, 2017, 19:38

Quote:

Originally Posted by sixof1

Does anyone have any tips or recommendations for reducing noise/vibration from the d4/d5 engine? I have read about supposed improvements from oil changes, using premium fuels with higher cetane rating and even changing engine mounts. Any views or experiences? Thanks.

Quote:

Originally Posted by sixof1

Am I right in thinking there is some sort of vibration damper available?

Can you be more specific about the engine to which you're referring?
There's..... I dunno, 15-20 variations.

sixof1 · Nov 15th, 2017, 21:53

D4 AWD Geartronic 2.4 5 cylinder 181 bhp

Rooster · Nov 16th, 2017, 00:01

Quote:

Originally Posted by sixof1

D4 AWD Geartronic 2.4 5 cylinder 181 bhp

Bolted into what car and what sort of age and mileage and what sort of vibratiuon and where can you feel it most and when, ie speed related, hot/cold etc

wimorrison · Nov 16th, 2017, 06:19

Whilst waiting for detail on the car etc have you considered the vibration - not really sure how bad it is - suggests there is a more fundamental issue as these engines are normally very well balanced?

Are you sure that you haven’t got a failed, or failing, injector which leads to the an imbalance and subsequently vibration? There are other aspects that could cause this but injector issues are not unknown and an older engine is more liable to have this sort of issue.

Nov 15th, 2017, 13:38	#1
sixof1 Junior Member Last Online: Jul 14th, 2020 23:58 Join Date: Oct 2017 Location: Yeovil	D5 noise/vibration Does anyone have any tips or recommendations for reducing noise/vibration from the d4/d5 engine? I have read about supposed improvements from oil changes, using premium fuels with higher cetane rating and even changing engine mounts. Any views or experiences? Thanks.

Nov 15th, 2017, 16:52	#3
xco Premier Member Last Online: Yesterday 04:14 Join Date: Apr 2009 Location: Near Plymouth	Check that the engine cover is on properly (grey or black). __________________ MY14 XF S V6 3.0 Sportbrake Portfolio in Ultimate Black Metallic and black 20"alloys MY08 Xc90 D5 185 Se Lux Satnav Geartronic. Much loved gone now but not forgotten. Wherever you go............There you are!!!

Nov 16th, 2017, 06:19	#10
wimorrison Grumpy Old Sod Last Online: Dec 14th, 2021 15:39 Join Date: Jan 2009 Location: Hampshire, nee Scotland	Whilst waiting for detail on the car etc have you considered the vibration - not really sure how bad it is - suggests there is a more fundamental issue as these engines are normally very well balanced? Are you sure that you haven’t got a failed, or failing, injector which leads to the an imbalance and subsequently vibration? There are other aspects that could cause this but injector issues are not unknown and an older engine is more liable to have this sort of issue. __________________ Currently XC60 Previously XC60, V70, S40, ...

Nov 15th, 2017, 16:49	#2
green van man Premier Member Last Online: Apr 11th, 2024 09:21 Join Date: Nov 2012 Location: Ffos y Ffin	Sorry cannot help, my D5 has no untoward noise or vibration. If yours has the first thing I would be looking at is engine mounts. Paul.

Nov 15th, 2017, 18:08	#4
sixof1 Junior Member Last Online: Jul 14th, 2020 23:58 Join Date: Oct 2017 Location: Yeovil	Am I right in thinking there is some sort of vibration damper available?

Nov 15th, 2017, 18:30	#6
sixof1 Junior Member Last Online: Jul 14th, 2020 23:58 Join Date: Oct 2017 Location: Yeovil	I thought there was some sort of additional circular damper that could be added to counteract vibration. They use a similar device on helicopter rotor heads, I once did a data analysis exercise on it.

Nov 15th, 2017, 21:53	#8
sixof1 Junior Member Last Online: Jul 14th, 2020 23:58 Join Date: Oct 2017 Location: Yeovil	D4 AWD Geartronic 2.4 5 cylinder 181 bhp

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