Y61 4.2 Rear knocking noise

[Tiny Howarth]

Rear Nocking Noise when driving in sand, on the road no noise, cannot say where in the rear, anybody have any ideas

[Tinus lotz]

Mabe the rubber packing on top of the coil is worn ?

[ricster]

Or the upper and lower rubber bushes might be "kaput", so as you go over a bump it has excess movement. You should also feel it on pull off though....

[pgreeff]

One of the rubbers on my rear sway bars disintegrated. The sway bar had a lot of play as a result and any drastic movement, such as going over a speed bump would result in a loud clack sound.

I've also had two of my shocks on different cars develop knocking sounds. It was a major pain to find since the shock tested fine. Could have been the mounting rubbers as well I suppose. Either way, replacing the shocks sorted the problem in these two cases.

[Tiny Howarth]

Mabe the rubber packing on top of the coil is worn ?

Thanks good place to start, I have fitted OME recently, made noise before as well.

[Tiny Howarth]

Or the upper and lower rubber bushes might be "kaput", so as you go over a bump it has excess movement. You should also feel it on pull off though....

HI thanks for input, no noise on pull off.

[Tiny Howarth]

One of the rubbers on my rear sway bars disintegrated. The sway bar had a lot of play as a result and any drastic movement, such as going over a speed bump would result in a loud clack sound.

I've also had two of my shocks on different cars develop knocking sounds. It was a major pain to find since the shock tested fine. Could have been the mounting rubbers as well I suppose. Either way, replacing the shocks sorted the problem in these two cases.

HI, I have recently replaced coils and shocks OME 2", made no difference, going over speed humps does not make a noise.

[Craig Lord]

Check the sway bar links to see If any of them are loose. Mine keeps coming loose on the rear passenger side and any articulation results in a loud knocking noise because of the play. Drives me crazy it's fine on the tar but as soon as I go off road it starts.

I need to get new ones next time I'm in SA

[Tiny Howarth]

Check the sway bar links to see If any of them are loose. Mine keeps coming loose on the rear passenger side and any articulation results in a loud knocking noise because of the play. Drives me crazy it's fine on the tar but as soon as I go off road it starts.

I need to get new ones next time I'm in SA

Thanks I will check this out.