Been driving with the window open, always a bad idea when you don't want to hear weird noises from your landy
At 40-45 mph under no load there is a weird rattling noise from below. I have looked at the UJs they appear OK, does not appear to be anything loose. Have done the following lately

New oil seal on front diff propeller shaft
Changed all my drive train oil including engine, diffs, trans, gearbox the lot
I have not greased the UJs or propeller shafts yet

One theory I have seen is it could be the Cat Converter rattling

Q Do UJs and CVs rattle when driven straight when they are worn? There is no full lock noise from CVs

Any ideas folks?

Regards
Pete

peter90 said:

Been driving with the window open, always a bad idea when you don't want to hear weird noises from your landy
At 40-45 mph under no load there is a weird rattling noise from below. I have looked at the UJs they appear OK, does not appear to be anything loose. Have done the following lately

New oil seal on front diff propeller shaft
Changed all my drive train oil including engine, diffs, trans, gearbox the lot
I have not greased the UJs or propeller shafts yet

One theory I have seen is it could be the Cat Converter rattling

Q Do UJs and CVs rattle when driven straight when they are worn? There is no full lock noise from CVs

Any ideas folks?

Regards
Pete

Click to expand...

Ujs knock or sometimes whistle/chirp when they are going
That's typical speed when you can feel wheel out of balance, haven't lost a weight?, haven't got a cat so can't comment on that

Mine does this too. I can't find anything in the drivetrain that's making the noise. The propshaft joints and splines are tight and fairly new anyway, the brake back plates are secure and don't have stones trapped behind them, the wheel bearings are tight and have grease in them (or they did last time I had the drive flanges off to look) and so on. Part of the clatter was the tubular handle on the Hi Lift jack, but there's still a bit of a clatter even when I'm not carrying it. Going round the Land Rover and rattling everything, the decorative caps on the alloy wheel nuts are a bit loose and can be rattled to produce a similar note. I suppose with 20 of them rattling in harmony, maybe I can just hear it over the sound of the engine. It certainly sounds like it's coming from low down on the vehicle.

Thanks fellas useful stuff I will investigate further with this info

Greased all UJs and splines, no change
Found a rattling baffle box, not sure if that's it, it only does it when driving at 45 mph
Might change it, will post here if I do

Rattling still there, read some scary stuff that it could be the R380 gearbox, anyone heard of gearbox rattle?