Knocking from rear suspension

peterjameo · Post by **peterjameo** » Sun Mar 06, 2005 8:59 pm

Everytime the car travels over a bumps in the road , you hear a knocking from the rear suspension. Where should I look first?shocks perhaps?.
Mileage is at 75000

Big Brother · Post by **Big Brother** » Sun Mar 06, 2005 9:19 pm

It could very well be the exaust knocking agaist the fuel tank shield, I still have the problem on my S.

Cheers

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peterjameo · Post by **peterjameo** » Sun Mar 06, 2005 9:38 pm

Thanks..I have had the exhaust checked recently, and it seems to have been mounted properly. My gut feeling is that the sound comes from the actual suspension at the rear of the car.

MatBat · Post by **MatBat** » Sun Mar 06, 2005 10:39 pm

Antiroll bar drop links (S shaped) these can wear out and make a knocking noise.

peterjameo · Post by **peterjameo** » Sun Mar 06, 2005 10:51 pm

Thanks for your reply.I will check this out. The rattling knocking sound that I hear suggests that this could be the culprit. How do you check if worn? see if there is any movement when grasped or levered perhaps. Any suggestions welcome.
Pete

MGB_GT · Post by **MGB_GT** » Sun Mar 06, 2005 11:10 pm

We had a wheelbearing out on the ES, sounded much like you describe. Wasn't doing any harm (aside from mentally) so we left it be. That said that car had so many other rattles it was almost in tune enough to be pleasant when the sub wasn't firing.

peterjameo · Post by **peterjameo** » Sun Mar 06, 2005 11:16 pm

Thanks..
Yes, I have been ignoring it for some time, especially as I have had more pressing problems(dodgy diff bearing) to sort out..
Trouble is even my wife has now noticed it, so I think thwe time has come to investigate further.
Will keep posted.. Pete.

MatBat · Post by **MatBat** » Mon Mar 07, 2005 7:26 am

peterjameo wrote:Thanks for your reply.I will check this out. The rattling knocking sound that I hear suggests that this could be the culprit. How do you check if worn? see if there is any movement when grasped or levered perhaps. Any suggestions welcome.
Pete

you might be able to lever them to check for movement, though I'd just replace tehm anyway, they are only 22.00 From volvo

peterjameo · Post by **peterjameo** » Mon Mar 07, 2005 10:04 am

Sounds good advice. I will order the parts from Volvo at the earliest.
Many thanks for your suggestion.

levensnevel · Post by **levensnevel** » Mon Mar 07, 2005 8:08 pm

Might be possible that you 'bumbstops' are knackered.
One they replaced the 'old' ones at the rear of mine the 'knocking' stopped.

peterjameo · Post by **peterjameo** » Mon Mar 07, 2005 9:22 pm

Re bumpstops..Could be I,ll check thisout as well, thanks.. The noise is generated from only slight "bumps" in the road tho.

rpruen · Post by **rpruen** » Tue Mar 08, 2005 12:34 am

peterjameo wrote:Re bumpstops..Could be I,ll check thisout as well, thanks.. The noise is generated from only slight "bumps" in the road tho.

That sounds very much like the rear anti-roll bar links.

To check... Have someone rock the car from side to side, and watch the bearing part of the link, if it moves then it's in need of replacement.

Be carefull when removing them if the bolts are tight. The brakets they bolt to are only spot welded to the car. Too much force and they will fall off.

Richard

peterjameo · Post by **peterjameo** » Tue Mar 08, 2005 1:44 pm

Anti-roll bar links replacement. I wonder how much Volvo would charge me for doing this?

MatBat · Post by **MatBat** » Tue Mar 08, 2005 2:24 pm

You can do it yourself, it's a really easy job.

All you need are two 17mm spanners.

peterjameo · Post by **peterjameo** » Tue Mar 08, 2005 3:31 pm

Thanks you've encouraged me!! I'll pick a warm day first tho...I've gone a bit soft in my old age....

JohnTurbo · Post by **JohnTurbo** » Tue Mar 08, 2005 5:05 pm

is that a price each or per pair mat?

Murf · Post by **Murf** » Tue Mar 08, 2005 8:32 pm

each, plus vat. guess who had to do theirs??

felyx · Post by **felyx** » Thu Mar 10, 2005 3:35 pm

Of all the 6 volvo 480's i've had i have never found one that did'nt need new rear shocks, the ones i just took of my two tone had not rusted but had done 130,000 miles !!!!!!!!

and if they don't get replaced they start hammering the bushes and links.

cheers felyx

Volvo 480 Club Europe

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