Vehicle & Technical > Discovery

Really annoying vibration...

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Iain C:
First I thought it was a wheel bearing, but it's load/power dependant, not speed dependant.  Both front UJ's seem OK, I changed them recently.  Rear UJ sees ok, no obvious wobble.  Going round corners makes no difference.

What can it be? :-k

It's worst at about 2000-3000 revs in 3rd gear, accelerating.  However, you can almost accelerate through it, back off a bit and it goes away.  It's not really a problem at cruise speed at all however.  When it's shaking, the whole vehicle shakes, and if I was to try and say which end it was coming from, I'd say the rear.

Could it be that rubber UJ doughnut thingy?

Vehicle has a 2" lift by the way...any ideas gratefully recieved!

Range Rover Blues:
Yes it could, also the rubber support bush inside the rear prop as part of the same joint.

Also the top UJ on the front prop typically fails following a lift, it will have worn in with the car at normal height and now that you are pushing it further they tend to wear out.

Also the pulsing caused by the high UJ angle could be a candidate.

As can a missfire, or a broken torque converter driveplate.

needbeer:
could it be mud on the inside of your rims ?

Range Rover Blues:
#-o

Obvious.

Iain C:

--- Quote from: "Range Rover Blues" ---Yes it could, also the rubber support bush inside the rear prop as part of the same joint.

Also the top UJ on the front prop typically fails following a lift, it will have worn in with the car at normal height and now that you are pushing it further they tend to wear out.

Also the pulsing caused by the high UJ angle could be a candidate.

As can a missfire, or a broken torque converter driveplate.
--- End quote ---


Support bush, where does it live?  I changed the rear diff oil seal not so long ago and there was a peg thingy on the flange, is it near there?

High UJ angle...not so sure, it was perfect for a good few thousand miles then suddenly got going...

Top UJ, do you mean gearbox rather than axle end?

Misfire/torque converter, it's a diesel manual so presumably those are both out?

Mud on the rims...nah, would have needed to have gone off road for that and I'm afriad at the mo it's tarmac and towing until I finish the mods and get it dirty over the winter!

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