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- CJS
- Member Since: 24 Apr 2023
- Location: East Lothian
- Posts: 3
Droning noise and poor acceleration
Under gentle acceleration, around 1500rpm, I get a vibrating, droning sound. This disappears at higher revs. If I hold the car at about 1,500rpm it continues. Revs are up and down during heavier acceleration and I feel car is struggling a little to pick up speed. 3.0L Diesel HSE. Any ideas?
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- 4x4newbie
- Member Since: 11 Feb 2021
- Location: Lancashire
- Posts: 60
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Did you find out what this was?
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- JBFUK
- Member Since: 25 Apr 2022
- Location: South East
- Posts: 52
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I've noticed that sound, had it for years it doesn't seem to be getting worse, it's usually when crawling at low speed and revs (when you'd probably have changed down a gear in a manual). In slow moving traffic say 10-15mph with revs at about 1200 - then just accelerating very slightly but not enough to prompt a downshift. The service before last they changed the transfer box fluid and I did notice this sound seemed to stop for a couple of months, but then came back.
It did worry me at first but given it hasn't gotten worse or more frequent, and I don't have any performance related issues, I decided some time ago not to think about it. If it comes up and bothers me I just let off the accelerator, or add some more to prompt a gear change.
Similarly I had a feint rotational knock/rumble/groan from the front drivers side wheel area - which I only noticed when coming down some steep winding roads in the pyrenees - only on right hand corners (loading up passenger side front wheel). This was about 3 months after buying the car. I subsequently noticed it when going around fast-ish roundabouts. I mentioned it at the next service and they checked the bearings/CV joints and couldn't find evidence of a problem. At some point this just went away and I haven't heard it since (and have had two subsequent trips to Andorra up/down the pyrenees).
Think it's probably just one of those things. Despite these little niggles and the risk of the engine self destructing at any time - we like the discovery so much, and prices have dropped so much thanks to the insurance saga that my wife is considering getting an identical Disco for herself. I guess then I can see whether it makes the same noise in traffic.
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