D5 geartronic

4wheeldriver · Feb 23rd, 2009, 21:02

Hi

Last week my Xc90 developed a a knocking noise from under the bonnet that gets louder the more throttle you give it and faster according to the rpms. If you lift off altogether it disappears. Any ideas??

gazza12345 · Feb 25th, 2009, 16:56

Check oil level first. if thats ok then is it ready for a service. They start to get grumbly when needing a service. There as been problems with injectors. An injector going down can make them knock. If it is ready for service then get it flushed at the same time.

4wheeldriver · Feb 25th, 2009, 17:03

Its only 4 months old with 4000 miles up and have checked the oil on it and it was just below the max mark but thanks for your comment.

4wheeldriver · Mar 2nd, 2009, 16:09

Quote:

Originally Posted by gazza12345

Check oil level first. if thats ok then is it ready for a service. They start to get grumbly when needing a service. There as been problems with injectors. An injector going down can make them knock. If it is ready for service then get it flushed at the same time.

Have just found out that the car is actually nearly a year old so maybe it could be the oil thats the problem. Only found out as the pre delivery inspection was carried out 23/07/2008 at the garage and then it lay for 7 months before i purchased it on 01/10/2008. So much for the 3 new cars theyd just had come in to stock at great prices. Wonder if any of the others are suffering so many faults as mine.

PAZ3154 · Mar 3rd, 2009, 13:57

ask your dealer if your car's had the swirl chamber mod. Your symptoms sound like it may not have done

4wheeldriver · Mar 3rd, 2009, 22:36

See my thread in the General Room and you'll see its the least of my problems

Feb 23rd, 2009, 21:02	#1
4wheeldriver Master Member Last Online: Jan 20th, 2013 20:28 Join Date: Nov 2008 Location: Aberdeen	D5 geartronic Hi Last week my Xc90 developed a a knocking noise from under the bonnet that gets louder the more throttle you give it and faster according to the rpms. If you lift off altogether it disappears. Any ideas?? __________________ BMW X5 3.0sd SE with more extras than the cast of Ben Hur!!!! Mini Cooper Worx

Feb 25th, 2009, 17:03	#3
4wheeldriver Master Member Last Online: Jan 20th, 2013 20:28 Join Date: Nov 2008 Location: Aberdeen	Its only 4 months old with 4000 miles up and have checked the oil on it and it was just below the max mark but thanks for your comment. __________________ BMW X5 3.0sd SE with more extras than the cast of Ben Hur!!!! Mini Cooper Worx

Mar 3rd, 2009, 22:36	#6
4wheeldriver Master Member Last Online: Jan 20th, 2013 20:28 Join Date: Nov 2008 Location: Aberdeen	See my thread in the General Room and you'll see its the least of my problems __________________ BMW X5 3.0sd SE with more extras than the cast of Ben Hur!!!! Mini Cooper Worx

Feb 25th, 2009, 16:56	#2
gazza12345 Junior Member Last Online: Jul 1st, 2013 22:41 Join Date: Feb 2009 Location: sheffield	Check oil level first. if thats ok then is it ready for a service. They start to get grumbly when needing a service. There as been problems with injectors. An injector going down can make them knock. If it is ready for service then get it flushed at the same time.

Mar 3rd, 2009, 13:57	#5
PAZ3154 Glad to be back Last Online: Jul 12th, 2021 22:38 Join Date: Dec 2004 Location: Llandudno Junction	ask your dealer if your car's had the swirl chamber mod. Your symptoms sound like it may not have done

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