Ruurd Posted July 8, 2010 Share Posted July 8, 2010 OK you gurus, Can anyone give me pointers as to why my Landy is making a loud chattering noise when I drive her? It starts at speeds over 10-15mph, does not vary in pitch and only changes slightly when applying clutch pedal. Sometimes the noise goes away when she has reached running temperature. Pointers? Thoughts? TIA! Quote Link to comment Share on other sites More sharing options...
errol209 Posted July 8, 2010 Share Posted July 8, 2010 OK you gurus, Can anyone give me pointers as to why my Landy is making a loud chattering noise when I drive her? It starts at speeds over 10-15mph, does not vary in pitch and only changes slightly when applying clutch pedal. Sometimes the noise goes away when she has reached running temperature. Pointers? Thoughts? TIA! Hmmm... my first guess is actually something electrical . If you turn all the lights and heated stuff on and then off while driving at 15mph what happens? Quote Link to comment Share on other sites More sharing options...
Gromit Posted July 8, 2010 Share Posted July 8, 2010 Is the noise constant regardless of gear or engine speed or road speed? If so, I suggest someone has tied a monkey to your truck, who gets annoyed when it gets windy. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted July 8, 2010 Share Posted July 8, 2010 Handbrake dragging slightly, they chatter. Quote Link to comment Share on other sites More sharing options...
rtbarton Posted July 8, 2010 Share Posted July 8, 2010 Loose engine mount? Exhaust catching somewhere? Quote Link to comment Share on other sites More sharing options...
Maverik Posted July 8, 2010 Share Posted July 8, 2010 I was going to say the wife... but thats anything under 15mph... Quote Link to comment Share on other sites More sharing options...
errol209 Posted July 8, 2010 Share Posted July 8, 2010 I was going to say the wife... but thats anything under 15mph... And the note changes with speed too: Have you broken down again -> we'll never get there -> doesn't go very well -> why is it so noisy -> slow down I can't hear myself think -> (shouted) How many MPG does it do at this speed? (covers 0 - 50 mph) Quote Link to comment Share on other sites More sharing options...
Quagmire Posted July 8, 2010 Share Posted July 8, 2010 My GF has learnt to not even bother trying to talk at speeds above 40mph, but then you get a condensed burst of chatter everytime you stop for traffic lights etc Quote Link to comment Share on other sites More sharing options...
Ruurd Posted July 8, 2010 Author Share Posted July 8, 2010 Is the noise constant regardless of gear or engine speed or road speed? If so, I suggest someone has tied a monkey to your truck, who gets annoyed when it gets windy. Possible. Pitch is constant, no sound below 15mph, volume increases to max quickly, slight difference between clutch pedal depressed or not depressed, no change when idling while landy has speeds over 15 mph. I'm not sure but the sound seems louder on the left side. Maybe a bearing? Quote Link to comment Share on other sites More sharing options...
errol209 Posted July 8, 2010 Share Posted July 8, 2010 Possible. Pitch is constant, no sound below 15mph, volume increases to max quickly, slight difference between clutch pedal depressed or not depressed, no change when idling while landy has speeds over 15 mph. I'm not sure but the sound seems louder on the left side. Maybe a bearing? The constant pitch bit probably rules out the engine, gearbox, drive train, axles, diffs and wheels, cos I can't think of anything that gets to a maximum at 15mph and stays there? Could you get a recording or video sound track of it for us? I'm a bt stumped (have you tried the lights test I suggested above?) Quote Link to comment Share on other sites More sharing options...
ThreeSheds Posted July 8, 2010 Share Posted July 8, 2010 A couple of thoughts:Viscous fan is not viscous and the bearing is going. A piece of plastic (bag for example) caught underneath and blowing about. That's all I can think of - even the viscous fan is pushing it.. Tricky one! Roger Quote Link to comment Share on other sites More sharing options...
Gromit Posted July 8, 2010 Share Posted July 8, 2010 A piece of plastic (bag for example) caught underneath and blowing about. That's all I can think of - even the viscous fan is pushing it.. Tricky one! I was being semi-serious about the monkey. All I can think of is something blowing in the wind. As errol says, constant pitch probably* rules out all bearings etc. *you can never be sure with a Land Rover Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted July 8, 2010 Share Posted July 8, 2010 Prop UJs? Though you'd expect it to change in proportion to the speed. I'd suggest you "allow the fault to develop" as we call it at work - when it falls off it'll be quite obvious what it was... Quote Link to comment Share on other sites More sharing options...
Ruurd Posted July 8, 2010 Author Share Posted July 8, 2010 A couple of thoughts:Viscous fan is not viscous and the bearing is going. A piece of plastic (bag for example) caught underneath and blowing about. That's all I can think of - even the viscous fan is pushing it.. Tricky one! It's loud. Viscous fan can't be that, got a Kenlowe kit. Quote Link to comment Share on other sites More sharing options...
Ruurd Posted July 8, 2010 Author Share Posted July 8, 2010 Prop UJs? Though you'd expect it to change in proportion to the speed. I'd suggest you "allow the fault to develop" as we call it at work - when it falls off it'll be quite obvious what it was... Prop UJs have been replaced. One of them was really borderline... (front prop on the transfer box side was b-a-d...) Chatter is from before that and still happens. Quote Link to comment Share on other sites More sharing options...
snagglebag Posted July 8, 2010 Share Posted July 8, 2010 could it be something as simple as brake pads in the callipers??? i have had this before on old callipers worn on the face that the pads sit in and they chatter on the inner part of the disc that mounts on the hub?? just a thought and prob worth a look and some fresh copper slip plonked on Quote Link to comment Share on other sites More sharing options...
errol209 Posted July 8, 2010 Share Posted July 8, 2010 Really really really badly worn front radius arm bushes (and I mean virtually gone)? Quote Link to comment Share on other sites More sharing options...
Ruurd Posted July 8, 2010 Author Share Posted July 8, 2010 Handbrake dragging slightly, they chatter. Triedf applying handbrake while driving. No change.... Quote Link to comment Share on other sites More sharing options...
Ruurd Posted July 9, 2010 Author Share Posted July 9, 2010 could it be something as simple as brake pads in the callipers??? Metallic sound? Which can be obnoxiously loud? Hmmm. Sometimes when it does that it feels like it's breaking slightly. OK... Something to have a look at. Quote Link to comment Share on other sites More sharing options...
Gromit Posted July 9, 2010 Share Posted July 9, 2010 Metallic sound? Which can be obnoxiously loud? Hmmm. Sometimes when it does that it feels like it's breaking slightly. OK... Something to have a look at. I've only heard brake pads 'clack' when coming to a stop, as the pad moved up and hit the caliper. If they were doing it continuously, it'd certainly be audible. But, does the noise stop when you brake? If so, then it's probably not the pads. I like errol's suggestion of something really gone on the suspension, and rattling about while on the move. Press the clutch and the load changes, axle moves - changing the sound. Doesn't explain absence of noise when warmed up though. I would have though that if you can get it on a ramp, you should be able to spot the problem/monkey. Quote Link to comment Share on other sites More sharing options...
zim Posted July 11, 2010 Share Posted July 11, 2010 Thrust bearing ? Springs on the clutch come loose ? Quote Link to comment Share on other sites More sharing options...
Ruurd Posted July 11, 2010 Author Share Posted July 11, 2010 Thrust bearing ? Springs on the clutch come loose ? I thought about that. I disengaged the transferbox then revved engine while going through gears, no sound. As a matter of fact yes I thought about clutch problems. Quote Link to comment Share on other sites More sharing options...
Ruurd Posted July 17, 2010 Author Share Posted July 17, 2010 Turned out to be a cover on the transfer box being loose. Mechanics fastened it, done. Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted July 17, 2010 Share Posted July 17, 2010 Glad you found it - any oil loss to replace? Quote Link to comment Share on other sites More sharing options...
ThreeSheds Posted July 18, 2010 Share Posted July 18, 2010 Turned out to be a cover on the transfer box being loose. Mechanics fastened it, done. From the above I would suspect that the cover was not tightened down correctly last time it was off (it may have been a rushed or slapdash reassembly) and hence I would spend a happy hour or two checking every fastener I could see (and some I can't - the top bell-housing bolts for example: on mine they were not much more than finger tight...). Also - it would probably be worth checking or changing all of the transmission fluids while you are at it. Roger Quote Link to comment Share on other sites More sharing options...
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