Knocking Mystery! help :(

[pointer7]

First time poster here so hi

I need some advice as I am about to pull what's left of my hair out, I have a 2014 Volvo S60 which has had a knock on the N/S/R for nearly a year.

It's had new shocks both sides, new drop links, a spring and top mount but the noise is still there! its over uneven surfaces where it knocks on just the nearside even at very slow speeds (crawling speed!)
I have been told that I could have been unlucky and got a bad new shock with a "dead spot" in it is this possible? I tried all other possibilities, driving with the seats down, removing the boot floor and the tool kit just in case & the Exhaust has also been checked.

Other than trying another new shock, what else can it be mechanically!?

Thanks in advance

[pointer7]

Thanks for the advice all...

I did forget to mention that it's been to 3 different garages and they all said they can find nothing wrong. I have jacked it up and can find nothing, I'm just doing what all the other garages have been doing.

I have even checked if the bumper is loose, number plate loose, tailgate etc but nothing even the rear passenger door I have adjusted but no difference

[pointer7]

Thanks all for the suggestions...

Its quite a clunky knocking noise so i'm not sure if it will be handbrake cable related but will check.

The car has had drop links both sides and I mentioned anti roll bar links to the last garage it went to and they said drop links are the same thing?

I'm still erring towards a dodgy shock absorber....

[pointer7]

The shock doesn't show anything wrong visually (no misting or unusual bounciness) but I was told that they can have a "dead spot" even on a new shock which would also cause a knocking sound...

[pointer7]

I hope it isn't the spare rattling because it doesn't have one lol..

Once the weather improves I think I'll have to get underneath again and have a good poke around

[pointer7]

I think it might well be the shock...

I have started to notice that on very cold mornings, the knocking is very minimal and the further I get in to my journey, the knocking then starts?

Do shock absorbers “warm up”? waiting for some better weather to jack the car up and scramble underneath

[pointer7]

Hi All,

Sorry to resurrect this thread but seemed silly starting a new one!

Over the last few months, the first lockdown gave me time to sort a few niggles with my car that normally get put off (interior squeaks, sorting a few scratches on the bodywork etc.)

Once the lockdown was lifted I booked the car in for a service with my usual guy who said "is it still knocking" to which I replied "yes like a bugger" so he has had another look at it.

I went to pick it up and he had left it on the ramp to show me underneath, the top mount is rock solid, the new drop links are fine and the shocks are only a year old but again, its a complete mystery.

Does anyone have any other ideas?

[pointer7]

Thanks for the suggestions everyone.

So far I have:
Emptied boot and tool kit
Folded seats down
Pulled back trim on the sides of the boot to check for loose bits
Exhaust is all good and all bushes checked multiple times

One thing I didn't mention is when I'm sjtting in the passenger seat and someone else is driving its vitrually silent from the passenger seat. When me and the missus switch over to the drivers seat the knocking is more audible to whoever is driving or sitting in the back but the passenger barely hears it.... Its so strange

[pointer7]

I have checked the wheel nuts which are fine but haven't checked the battery (the noise is at the rear i'm sure of it but I know sound can travel in weird ways so will check it anyway)

it does also do it at crawling speed! coming out of a car park yesterday, hit the smallest of bumps at about 5 mph and I heard it but going over speed humps it doesn't do it so it seems like small, short ripply (if that's even a word) type bumps that causes it to knock.