disco2 td5 auto harshness

[optimax90]

my td5 auto discovery has always seemed to have a harshness during gearchanges.even when cruising and engine is at a low rpm the driveline seems to drone at vibrate until she picks up the rpm.does anyone else have this problem.?

[JackH]

At what rpm does this happen. I have a funny buzz type noise in mine at around 1500rpm, which only happens in high range, but gear changes are ok.

[optimax90]

problably at its worst between 1500 and 2000rpm or when the engine is laboring.not a rattling noise more a driveline vibration.having driven a couple of other autos they had the same vibration yet a manual is much smoother.

[stevep]

I have a '00 TD5 auto. I have a similar vibration recently but only when accelerating, not sure what rpm - probably between 1500 & 2500. Makes the dash rattle slightly. doesn't appear to happen when auto locks up after 83kmh & 2000rpm.

but I got under on the weekend with a long srew driver looking for movement in uni joints etc. Didn't find anything but something made a difference - cause its not there now. I suspect the rubber flange joint at the diff - doesn't look true in shape, maybe after 6 years it has had it. Also I live in Canberra & with the cold weather perhaps the rubber is hardening - off centre over night. anyway there seem to be a little bit of flex at this joint.

I looked at the double carden joint at the transfer case but no movement there that I can see.

Steve