Godlykepower Posted November 21, 2009 Share Posted November 21, 2009 Can someone please shed some light on identifying the cause of a sound which developed today. Whilst going to the shops, all of a sudden I heard a soft "clonking" sound which seemed to emanate from the centre of the vehicle (Gear/Transfer box?) It was as I was coming to a halt at some traffic lights. It did not do it again until the next time I started to decelerate. It has got a bit worse (I have only gone round town & straight back home when the noise developed) and ONLY happens under deceleration. I have no problem changing gear or any problems accelerating - it feels 100% normal to me. The sound being made is sort of like a crunchy, grating sound. It sounds a little bit like when brake pads have really worn out, but does not happen directly as a cause of braking - and braking is unaffected (anyway, it seems quite a bit louder than brakes.) Suggestions please. Martin Quote Link to comment Share on other sites More sharing options...
errol209 Posted November 21, 2009 Share Posted November 21, 2009 Can someone please shed some light on identifying the cause of a sound which developed today. Whilst going to the shops, all of a sudden I heard a soft "clonking" sound which seemed to emanate from the centre of the vehicle (Gear/Transfer box?) It was as I was coming to a halt at some traffic lights. It did not do it again until the next time I started to decelerate. It has got a bit worse (I have only gone round town & straight back home when the noise developed) and ONLY happens under deceleration. I have no problem changing gear or any problems accelerating - it feels 100% normal to me. The sound being made is sort of like a crunchy, grating sound. It sounds a little bit like when brake pads have really worn out, but does not happen directly as a cause of braking - and braking is unaffected (anyway, it seems quite a bit louder than brakes.) Suggestions please. Martin When exactly does it happen? when lifting off the accelerator, braking, or letting the clutch up after changing down a gear? Quote Link to comment Share on other sites More sharing options...
Godlykepower Posted November 21, 2009 Author Share Posted November 21, 2009 Just letting up on the accelerator. It starts before I get on the brakes & if I am not changing gears or using the clutch. Quote Link to comment Share on other sites More sharing options...
errol209 Posted November 21, 2009 Share Posted November 21, 2009 Just letting up on the accelerator. It starts before I get on the brakes & if I am not changing gears or using the clutch. So it makes the noise on the over-run. Sadly that doesn't narrow it down as much as the other choices, but first suspect has to be the gearbox end. After that its possibly propshaft UJs, differentials (unlikely) and then CV joints. I'd start with checking the gearboxes' oil levels, and checking for play in the propshaft ends. Does it do it when in reverse, by the way? Quote Link to comment Share on other sites More sharing options...
Godlykepower Posted November 21, 2009 Author Share Posted November 21, 2009 Not checked reverse yet, I will go and investigate further in daylight tomorrow. Quote Link to comment Share on other sites More sharing options...
del Posted November 21, 2009 Share Posted November 21, 2009 had a similar sound ,turned out to be (in my case) two worn out universal joints that were badly worn Quote Link to comment Share on other sites More sharing options...
crwoody Posted November 21, 2009 Share Posted November 21, 2009 Strange that, mine makes an odd noise too, similar to what you describe, but only on the over-run and only as the speed passes between 38 - 36 mph. I am wondering if there is something wrong with the rear prop shaft UJ's, I've greased them and cant find any play to speak of. Does yours do it at a specific speed? Quote Link to comment Share on other sites More sharing options...
The Badger Posted November 21, 2009 Share Posted November 21, 2009 Yeah, a really good place to start would be the rear prop shaft, then front. A bearing would not make a clonking sound, but more of a rumble or grind. I guess, depends on your ears... Quote Link to comment Share on other sites More sharing options...
TD5 power Posted November 21, 2009 Share Posted November 21, 2009 hi i would have thought having a look inside the handbrake drum just in case something has come adrift, at least its cheap to fix before major surgery is considered. Gives you a good chance to look at the props and output bearings as well whilst you're there. Matt Quote Link to comment Share on other sites More sharing options...
reb78 Posted November 21, 2009 Share Posted November 21, 2009 hi i would have thought having a look inside the handbrake drum just in case something has come adrift, at least its cheap to fix before major surgery is considered. Gives you a good chance to look at the props and output bearings as well whilst you're there. Matt I agree. Mine was doing exactly this clonk clonk clonk as you coast to a halt. My handbrake cable then snapped and it prompted me to change that and at the same time overhaul the handbrake. The adjusters and actuator were all clogged up with dust and lack of grease. Took everything apart, serviced the lot and put everything back together as per the manual making sure everything was properly adjusted. Firstly the handbrake has never felt so smooth! secondly the clunking had gone - i'm convinced the handbrake was binding on slightly and caught more at low speeds. If you cant locate a dodgy UJ, i think this would be my next stop. Quote Link to comment Share on other sites More sharing options...
Diff Posted November 21, 2009 Share Posted November 21, 2009 I agree - sounds like handbrake dragging. It causes the drive train to shunt and clonk. Check it isn't over adjusted or sticking. Regards, Diff Quote Link to comment Share on other sites More sharing options...
Yostumpy Posted November 21, 2009 Share Posted November 21, 2009 I agree - sounds like handbrake dragging. It causes the drive train to shunt and clonk. Check it isn't over adjusted or sticking. Regards, Diff Wat he said! Quote Link to comment Share on other sites More sharing options...
mike4444244 Posted November 21, 2009 Share Posted November 21, 2009 mine did similar, was the a frame balljoint in the end... something else for you to check... just get underneath it and give everything a good wiggle / check Mike Quote Link to comment Share on other sites More sharing options...
sgnas Posted November 22, 2009 Share Posted November 22, 2009 A farme bushes (as opposed to ball) or trialing arm bushes would also make this noise. Quote Link to comment Share on other sites More sharing options...
oakesy Posted November 22, 2009 Share Posted November 22, 2009 I had an odd sound from my passenger side rear wheel area. Turned out to be bearings. on of the blighters had worn out and gave grawnching noise like as if the the brake pads had dislodged. Quote Link to comment Share on other sites More sharing options...
Godlykepower Posted November 22, 2009 Author Share Posted November 22, 2009 I had to start another thread on this subject, after I had a breakdown this morning, whilst investigating the possible causes suggested here last night. Turned out to be the diff pinion shaft that has sheared off. Nice. Left with a nice bill for a new diff. However, the members of this forum (and the Land Rover community in general) being as wonderful as they are, I have had several offers of help to rectify my problem quickly & cost effectively Martin Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.