 | Home > Maintenance & Modifications > I wouldn't normally do this but... what's this noise? |
 
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| balmybaldwin Member Since: 17 Apr 2021 Location: Surrey Posts: 185   
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sounds like it is something that happens once per wheel rotation judging by the gap as you slowed down.
i know that doesn't really help. Suggest you make a load more films in as controlled way as possible. (Same speed, same bit of road etc) but mount the camera (and Microphone) in different spots, then see which is loudest to help narrow it down |
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9th Sep 2021 11:37pm |
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| nitram17 Member Since: 09 Jun 2014 Location: newcastle Posts: 2260 |
Process of elimination but your lineup has the usual suspects.....have you tried the engine mounts/ shocks? exhaust?
alternator? or a loose heat shield basically anything bolted to the engine and transmission. If its not one of those its probably going to cost you time and money such as wayward broken clutch sping.......to be honest a defender is just a series of rattles held together by rust and wishful thinking! hope you find your white whale!I would put money on it being a bizarre cause that you will locate when you are not looking. |
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9th Sep 2021 11:50pm |
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| Smyles_ Member Since: 26 Aug 2018 Location: Copenhagen Posts: 512  
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Somewhat playing devils advocate here, but I wonder if it is in fact lower engine rpms and less road speed dependant. I could only hear it when you changed gears and when you either popped it in neutral or dropped the clutch, the rattle started and persisted. Yet when you picked up the revs I could no longer hear it.
What about at higher speeds? Have you also "freewheeled" then too and to what result? Or the reverse situation, revving the engine whilst in neutral whilst slowing or at slower speeds? My initial thoughts are more inline with harmonics... What about transmission, engine, exhaust mounts. Things that you'd expect to vibrate but are typically isolated with dampeners? I had an incredibly similar sounding vibration in my VW UP! few years back that would only occur in reverse. Turned out to be the exhaust heat shield came loose one of the times I thought I was a beach landing craft blasting through the puddles of Dundee... I suppose it was the frequency range outputted only in reverse (and stationary might I add) that was in line with the natural frequency of the loose heat shield "system". Although knowing this forum I'm certain somebody will be along eventually that's heard this exact noise from their own Landy and tell me I'm taking utter drivel as per   Stuart
Cummins 130 Build Thread 04 110 Double Cab - Black (gone) 58 130 Double Cab HCPU - Cairns Blue |
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10th Sep 2021 12:08am |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3208  
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Do you refer to the squeaking noise? As that sounds like it is working with the suspension. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black |
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10th Sep 2021 6:49am |
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| donmacn Member Since: 07 Nov 2017 Location: Nth Scotland Posts: 1829 |
Unloaded vs loaded?
I have a similar noise on mine sometimes. For me it's the anti-roll bar contacting the tank guard. Only really happens when the car's heavy. You wouldn't see it as something loose if you were examining it. I'm going to fix mine with a thin spacer between the ARB mount and the chassis. Might be (probably is) completely wrong here, it just sounds a little like that. I would also have said handbrake - but you've checked that. Donald 1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong (The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html ) 2000 Range Rover P38 4.0L V8 in the past.. RR classic - fitted with 200Tdi 1984 RR classic - V8 with ZF auto box 1993 Discovery 300Tdi not to mention the minis and the Type 2 VW camper... |
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10th Sep 2021 10:48am |
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| ozzie1989 Member Since: 25 Feb 2009 Location: Wales Posts: 282  
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Thank you all so much for taking the time to reply.
Lots to check from your suggestions so will have a look on the weekend and report back if I find anything Now: 2010 2.4 TDCi 110 Utility Wagon
Then: 2004 2.5 TD5 90 Hard Top (X-Tech Edition) |
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10th Sep 2021 8:27pm |
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