Member Since: 24 Apr 2019
Location: Stavanger
Posts: 14
Whining "belt noise" under load
Hi
(i tried to search the best I could.. )
I got a very annoying high pitch belt scream at high revs (over 2000) and under load. Sounds very much like the aux belt, but I cannot replicate the sound at standstill at any revs.
The belt is just a few months old (max 4000 km)
Took of the belt and inspected both guiding wheels and tensioner - also regreased the bearing on the upper one (without tensioner).
The sound is "circular" - almost as if it is from the wheel somewhere.
Brakediscs, calipers, and bearing are all brand new and I am almost convinced that it is not coming from those.
Also brand new front prop shaft and newly rebuilt transfer box.
(The sound was there before everything was changed - it appeared first at highway speed in DK this summer 130km/h +)
Would appreciate any tips on this case. Kind of drives me mad - and poor..
It could be the cambelt starting to come apart, they have been known to have bits hanging off and catching inside the cover causing the noise, when was the belts last done.?.
Would also help if you filled in your cars profile.
Flack
15th Aug 2019 10:48 am
Timmytid
Member Since: 24 Apr 2019
Location: Stavanger
Posts: 14
I think I found what might be causing the whine. The wheel on the picture seems to have a broken bearing as it makes a strange sound when spinning it with fingers.
Can someone confirm if this is the coolant pump?
If anyone have a link to the part I´ll be very thankful.
18th Aug 2019 9:44 pm
LeighW D3 Decade
Member Since: 31 Jan 2006
Location: Brisbane, AUS
Posts: 920
Timmytid wrote:
I think I found what might be causing the whine. The wheel on the picture seems to have a broken bearing as it makes a strange sound when spinning it with fingers.
Can someone confirm if this is the coolant pump?
If anyone have a link to the part I´ll be very thankful.
Yes, Timmytid, if your engine is the TDV6 2.7 litre, then that arrow is pointing to the water pump pulley. (Maybe compete your profile if your engine is not a D3/D4 TDV6 2.7 litre?)
Also sometimes a new(ish) belt can make a bit of noise and I have used a belt lubricant (Lanotech here in Australia) to quieten it down.
HTH, LeighLeighW
The old girl is on her third engine...
* first ran a bearing (design failure in original engine)
* second had a failure of the water outlet on top of the engine (pls check yours)
19th Aug 2019 3:03 am
Timmytid
Member Since: 24 Apr 2019
Location: Stavanger
Posts: 14
Thanks!
I`ve tried to update my car profile so many times but somehow it doesn`t appear right at my profile. I\ll have another look at it.
New waterpump is on order from LR Parts so I`ll update after changing it. Think there might be a 20% chance that it might be the cure for the bad sounds..
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