rear end wont lift always or to the right height

[citrov6]

the rear end has been vibrating 60mph and above. I thought it might be the height corrector so greased that, the lever moves much more freely but I have the following occuring

-when setting it to middle height the rear wont lift,
-middle to the upper settings it still wont lift.
-upper setting to middle drops to lowest height
-lower to upper most setting lifts it high
-front end works fine

[Xaccers]

Rear linkage sticking, not the one the manual control rod connects to, but the other one at 90 degrees to it which is controlled by the anti-roll bar, or due to sticking linkages the dog bone has popped off/broken, or worse the arm from the dog bone to the clamp on the ARB has snapped.

Set the car on high, get axle stands under the rear jacking points, set the height to normal and have a look underneath.


This video by RoadkillUK shows it in speeded up action.

[citrov6]

Ah, the dog bone looked ok not broken, but I didn't check movement of the other control rod to see if it was sticking, presumeably thats the problem, I did grease it thoroughly, maybe it needs working some more to loosen it up