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knocking sound from suspension

Posted: Sat Oct 30, 2010 11:37 pm
by thedweeb
Hi all,
My x has developed a knocking sound from what I think is the front left,which I can only hear when I go over bumps in the road ,so Im thinking Sway link . Am I on the right track.

Cheers in advance

dweeb

Re: knocking sound from suspension

Posted: Sun Oct 31, 2010 12:40 am
by AW8
Possibly could be ball joint or wishbone or for that matter any one of a number of rubber bits that wear, worn thrust bushes usually cause vibration under braking.

Noises not entrirely limited to suspension.

Excess wear to sway link/ARB's visible to eye. Shouldnt be hard to inspect & easist eway to see if its them is to disconnect then drive over some potholes - if noise gone then they are the culprit. Obviously new ones would be order of the day in that scenario.

Not done this myself & my comments only what I read ages ago within an article to check E46 ARBs - maybe a 2nd opinion may be of benefit before you start messing.

Re: knocking sound from suspension

Posted: Sun Oct 31, 2010 7:31 am
by dwgwyther
Hi Silly question time but which part are the thrust bushes as I have started to get a bit of vibration under breaking?
Image


Thanks
Darren

knocking sound from suspension

Posted: Sun Oct 31, 2010 8:35 am
by ITBarbie
Hi Dweeb

Sound very much like what happened to mine and that was diagnosed as the drop link.



Sent from my iPhone using Tapatalk

Re: knocking sound from suspension

Posted: Sun Oct 31, 2010 8:52 am
by x555
[quote=""dwgwyther""]Hi Silly question time but which part are the thrust bushes as I have started to get a bit of vibration under breaking?
Image


Thanks
Darren[/quote]

Part no.7 is the bush itself :thumbsup:

Re: knocking sound from suspension

Posted: Sun Oct 31, 2010 9:12 am
by dwgwyther
Cheers for that. Top man :thumbsup:

Re: knocking sound from suspension

Posted: Sun Oct 31, 2010 9:35 am
by dwgwyther
OK here we go OEM or Powerflex as a replacement for the thrust Bushes?

Re: knocking sound from suspension

Posted: Sun Oct 31, 2010 4:13 pm
by thedweeb
Thanks all. Was going to take alook today but lunch at mothers,clocks going back and now the halloween thing with the kids has left me no time,will try and find some time in the week.

Regards

Dweeb

Re: knocking sound from suspension

Posted: Sun Oct 31, 2010 5:31 pm
by EmptyWallet
Darren

I had terrible wobble through the steering wheel under braking. Had Item 10 on the diagram replaced and all is well.

Regards

Dean

Re: knocking sound from suspension

Posted: Mon Nov 01, 2010 9:36 am
by d8ean
this all sounds very familiar to my problems right now, drove on the m25 yesterday and the vibrations through the wheel were terrible!!!

Re: knocking sound from suspension

Posted: Fri Nov 12, 2010 3:21 pm
by Nige
I have a slight knocking under braking and the MOT advisory was for bush #7. Can you get the bush by itself, or does the entire arm (#6) need replacing ?

Re: knocking sound from suspension

Posted: Fri Nov 12, 2010 5:23 pm
by x555
[quote=""Nige""]I have a slight knocking under braking and the MOT advisory was for bush #7. Can you get the bush by itself, or does the entire arm (#6) need replacing ?[/quote]
You can get the bush seperately but you would need a press to get the old one out and the new one in.

Re: knocking sound from suspension

Posted: Fri Nov 12, 2010 7:51 pm
by Sanj
[quote=""x555""][quote=""Nige""]You can get the bush seperately but you would need a press to get the old one out and the new one in.[/quote][/quote]

Is this the one that needs that special tool?

If so, is it the same tool Lez bought?

Re: knocking sound from suspension

Posted: Fri Nov 12, 2010 9:47 pm
by Nige
Hydraulic bearing press is no problem :thumbsup:

Any suggestions on where I can get one please?

knocking sound from suspension

Posted: Fri Nov 12, 2010 10:21 pm
by phill
You can get the poly type bushes from polyflex if you don't want change them every 40,000 miles or so, but on the down side you feel more of the potholes in the road through the steering