Knocking noise on rear axle

Front axle, springs, shock absorbers, wheels, bearings, calipers, drums...
Tuning: suspension, discs, alloys upgrade...
NO parts requests here, please use our V3M BUY & SELL corner
Post Reply
Mcglone7
Posts: 27
Joined: 12 Feb 2013 09:45 pm

Knocking noise on rear axle

Post by Mcglone7 » 07 Sep 2013 12:52 pm

Hey,

I've got a knocking noise from the rear axle, i think it might be the metal rod that connects the axle to the chassis? Torque arm is it? Pretty much the knocking comes from the back right rear. Had a search about and can't really find any. Does anyone know who can supplies that part?
Also only started happening about 2 weeks after i lowered the car.

Cheers.

User avatar
volvodspec
Posts: 1921
Joined: 06 Dec 2008 09:35 pm
Location: Netherlands.
Contact:

Re: Knocking noise on rear axle

Post by volvodspec » 07 Sep 2013 07:34 pm

it's not likely that the knocking is from that rod (commonly known as the anti-tramp bar on here)

prime suspect is the rear jacking point being able to touch the leafspring, that happens quite often.
also, if you lowered it quite a bit it might be the shock absorber that catches on the axle

Mcglone7
Posts: 27
Joined: 12 Feb 2013 09:45 pm

Re: Knocking noise on rear axle

Post by Mcglone7 » 08 Sep 2013 04:39 pm

Oh thanks for that!

I'll have a look and see if can sort that out. Only lowered it by 2 inches, but got adjustable dampers coming anyway.

Ride_on
Posts: 2256
Joined: 26 May 2009 05:34 pm
Location: Belfast, N. Ireland

Re: Knocking noise on rear axle

Post by Ride_on » 08 Sep 2013 06:08 pm

Its not common to fail but the rear radius arm could be responsible if its loose. Is it knocking when the back end goes up or down? Could be the bush is gone or the retaining bolt is loose. Its a small bolt in a big hole, if its not tight the rod will bang hack and forwards.

The rod is to keep the axle flat and maintain the camber and toe-in as the suspension goes up and down.
Last edited by Ride_on on 13 Sep 2013 04:05 pm, edited 1 time in total.
1980 345 DL_______1987 360 GLE (project car restored to GLT spec and B230FT'd)
1984 360 GLT______1987 360 GLT
1983 360 GLS______1989 360 GLE
1985 340 GL_______1986 340 1.4
1985 360 GLS______1995 940 SE 2.3 Turbo Estate (daily)
1987 340 GL 1.7

Mcglone7
Posts: 27
Joined: 12 Feb 2013 09:45 pm

Re: Knocking noise on rear axle

Post by Mcglone7 » 09 Sep 2013 10:11 pm

It only ever happens when i turn right like hard or something then you hear a big knock. Then it continues knocking like quietly for a bit then goes away.

macplaxton
Posts: 3282
Joined: 09 Feb 2008 02:29 am

Re: Knocking noise on rear axle

Post by macplaxton » 09 Sep 2013 10:17 pm

Zorst?
72 DAF 44 Estate 78 Volvo 343DL Black BeautyImageImage
82 Volvo 343DL CVTImageImage 88 Volvo 340DL Diesel

alf
Posts: 124
Joined: 03 Oct 2008 06:00 pm
Location: Bucharest, Romania

Re: Knocking noise on rear axle

Post by alf » 11 Sep 2013 08:23 am

volvodspec wrote:
prime suspect is the rear jacking point being able to touch the leafspring, that happens quite often.
+ 1, it happened to me on the left side, but I had a horrible squeak on poor roads.
the early bird gets the worm
`87 B200E on LPG grey GLT aka Time Machine

Post Reply