trying to eliminate knocking from rear suspension

xcmarty · Jun 24th, 2012, 22:02

guys any advice appreciated, ive done some searchng but not got any conclusive results so far.

car is 2004 XC90 D5 SE manual.
had a rattly knocking sound when the car goes over any kind of bump on the roads, large or small bumps create the noise.

i got a pair of ARB drop links for the rear and swapped them the other week. im pretty sure it reduced the noise but not eliminated it.
next cheap fix im thinking ARB bush x2 to change.

seen these on Ebay...can someone confirm if its 21mm o/dia or 19mm o/dia ARB i'll have on my car?
yes i could get under there and measure with the calipers but its late/dark and id have to find an un-rusty piece of ARB to get an accuarate measure.

http://www.ebay.co.uk/itm/VOLVO-ANTI...ht_1364wt_1397

assuming i buy the correct ones and fit them and still have knocking...whats the next step? any common bushed on the wishbones or strut tops or something?

cheers in advance

undercoverxc90 · Jun 24th, 2012, 23:48

We had a rear knocking noise from or 54 reg earlier in the year - the arm on the rear exhaust corroded off and was no longer being held in place by the rubber holder. Luckily the arm was still fixed into the rubber holder so I got it welded, but might it be worth checking it's not the exhaust? Sorry if you already checked, but thought I'd mention it as the symptoms are exactly the same

Cheers

Mike

xcmarty · Jun 25th, 2012, 06:23

Cheers Mike, your right. I'll have a look, could be as simple as that

BestGear · Jul 10th, 2012, 18:10

Yeh, the exhaust hanging brackets are on the centre pipe at the rear and rust badly and fall off.

I have welded both of mine back on, but there is a repair bracket available (even on ebay for £14) for those that cant weld.

The rear hanger seems to last ok...so far.

David

copperknob · Jul 10th, 2012, 18:53

rear road springs cant give knocking sound theres a mod for this isolators a plstic sleeve slides on spring so it goes between spring and metal seating

Jun 24th, 2012, 22:02	#1
xcmarty Member Last Online: May 24th, 2016 21:50 Join Date: Aug 2009 Location: Marske by Sea	trying to eliminate knocking from rear suspension guys any advice appreciated, ive done some searchng but not got any conclusive results so far. car is 2004 XC90 D5 SE manual. had a rattly knocking sound when the car goes over any kind of bump on the roads, large or small bumps create the noise. i got a pair of ARB drop links for the rear and swapped them the other week. im pretty sure it reduced the noise but not eliminated it. next cheap fix im thinking ARB bush x2 to change. seen these on Ebay...can someone confirm if its 21mm o/dia or 19mm o/dia ARB i'll have on my car? yes i could get under there and measure with the calipers but its late/dark and id have to find an un-rusty piece of ARB to get an accuarate measure. http://www.ebay.co.uk/itm/VOLVO-ANTI...ht_1364wt_1397 assuming i buy the correct ones and fit them and still have knocking...whats the next step? any common bushed on the wishbones or strut tops or something? cheers in advance __________________ 2004 XC90 D5 SE Manual 100k mile owned since Aug '09 - SOLD 2011 XC90 D5 R-Design Auto 22k mile owned since Apr '13

Jun 25th, 2012, 06:23	#3
xcmarty Member Last Online: May 24th, 2016 21:50 Join Date: Aug 2009 Location: Marske by Sea	Cheers Mike, your right. I'll have a look, could be as simple as that __________________ 2004 XC90 D5 SE Manual 100k mile owned since Aug '09 - SOLD 2011 XC90 D5 R-Design Auto 22k mile owned since Apr '13

Jul 10th, 2012, 18:10	#4
BestGear Master Member Last Online: Feb 3rd, 2024 18:39 Join Date: Sep 2009 Location: Sunny Scotland	Yeh, the exhaust hanging brackets are on the centre pipe at the rear and rust badly and fall off. I have welded both of mine back on, but there is a repair bracket available (even on ebay for £14) for those that cant weld. The rear hanger seems to last ok...so far. David __________________ My Weather Station

Jun 24th, 2012, 23:48	#2
undercoverxc90 Junior Member Last Online: Jun 30th, 2019 09:42 Join Date: Jul 2011 Location: Colchester	We had a rear knocking noise from or 54 reg earlier in the year - the arm on the rear exhaust corroded off and was no longer being held in place by the rubber holder. Luckily the arm was still fixed into the rubber holder so I got it welded, but might it be worth checking it's not the exhaust? Sorry if you already checked, but thought I'd mention it as the symptoms are exactly the same Cheers Mike

Jul 10th, 2012, 18:53	#5
copperknob Senior Member Last Online: Oct 23rd, 2012 07:57 Join Date: Jun 2012 Location: scotland	rear road springs cant give knocking sound theres a mod for this isolators a plstic sleeve slides on spring so it goes between spring and metal seating

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