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Rednaxela

Member Since: 23 Sep 2019
Location: UK
Posts: 41

Groaning sound when easing off throttle

Hi

My Td5 90 (2006 reg, 33k miles on it) has been making a few irritating sounds, I'm trying to figure out what's causing them.

Firstly, as in the title, when cruising at 40/50+ in 5th gear (always seems to be in 5th), sometimes when I begin to slightly ease off the throttle, straight away it causes a loud, deep groaning sort of sound which can last about a second or 2 (nearly like the sound you'd hear in a car which had veered onto the white line on the side of a motorway) and then stops whether I'd kept off the throttle or back on. If I applied more throttle immediately from the start of the groan, it'd tend to stop straight away.

Second sound.. a deep clunk/knocking from the middle/rear of vehicle when going over the odd bump but sometimes it can seem to happen when driving along the flat. Yes, I have replaced the rear damper bushes and A frame ball joint/upper link bushes. Haven't yet got around to replacing the rear trailing arm bushes though.

Prop-shaft play seems normal and the bolts aren't loose etc.

I sometimes wonder if there's something loose in the gear or transfer box sliding back and forward

I included the mileage above as I don't particular think the clutch is knackered yet.

Thanks for any thoughts

19th May 2023 2:45pm

BrickBox

Member Since: 05 Oct 2021
Location: Wales
Posts: 821

2008 Defender 110 Puma 2.4 USW Zermatt Silver

Have the props been greased? 2008 2.4 110 Utility Station Wagon XS.

19th May 2023 3:51pm

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5699

2006 Defender 110 Td5 USW Zermatt Silver

As above props, or have you dropped/changed the box fluids and checked what comes out?

Does it roll ok, no tight brakes?

19th May 2023 7:26pm

Rednaxela

Member Since: 23 Sep 2019
Location: UK
Posts: 41

The propshafts UJs and splines are adequately greased, gearbox oil was fine several thousand miles ago.

23rd May 2023 5:17pm

4RF RDS

Member Since: 19 Jul 2015
Location: Ottawa
Posts: 933

2000 Defender 110 Td5 XS CSW Epsom Green

Possibly clutch release bearing is failing 🤷‍♂️ 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)

24th May 2023 1:58pm

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