Shock absorbers fail after 24 hours, or my mistake?

[Barking Mat]

As title...

New rear shocks on my V70 yesterday. Monroe, not the best not the worse.

I changed them, overseen +- by a professional.

Drove 5 miles home, great, all good. Wife heads off to pony club with daughter, 10 mins later she's back, says car making a funny noise.

Quick inspection, everything still bolted together, I even torqued it all down to correct specs.

I think they've failed?

But I'm no expert.

Thoughts please.

 

[waddycall]

What kind of rear axle arrangement is it? What happens if you jack it up and put it down again?

 

[Barking Mat]

What kind of rear axle arrangement is it? What happens if you jack it up and put it down again?

I don't know, a bit like a Mercedes the professional said, I'd say wishbones.

I'll go jack it up and take a photo.

 

[waddycall]

I’m no expert by the way - just curious. Wondering if it’s something other than the shocks causing the squat.

 

[eddie49]

Are they gas-charged shocks? Are the top & bottom ends identical? Did you fit them upside down ?

 

[Barking Mat]

 

[Barking Mat]

Are they gas-charged shocks? Are the top & bottom ends identical? Did you fit them upside down ?

No, impossible, the top is a threaded stud, and the bottom is a horizontal tube in a rubber bush you stick the bolt through.

 

[dobbslc]

Did you drop the car back down before you tightening the bolts on the bottom mounts?

 

[Barking Mat]

Did you drop the car back down before you tightening the bolts on the bottom mounts?

No , did it all jacked up.

 

[eddie49]

Did the nut on the top threaded stud tighten far enough down to compress onto the rubber mounting bush?
According to this website, some shocks run out of thread before the mount is tight:
https://www.matthewsvolvosite.com/how-to-fix-volvo-rear-shock-clunking/

 

[Barking Mat]

It was fine yesterday driving home, noticed the improvement over speed bumps.

 

[dobbslc]

If its a rubber bush on the bottom mount you normally need to tighten them with the car settled under its own weight or they get twisted.
I'd jack it up then loosen the bolts, put the car back down then crawl in the dirt to retighten them again.

 

[Barking Mat]

If its a rubber bush on the bottom mount you normally need to tighten them with the car settled under its own weight or they get twisted.
I'd jack it up then loosen the bolts, put the car back down then crawl in the dirt to retighten them again.

How could that affect the height of the suspension?

Can only just get a trolley jack under.

 

[Barking Mat]

What kind of rear axle arrangement is it? What happens if you jack it up and put it down again?

Jacked up and down, same , same.

 

[Barking Mat]

I'll go take the wheel off to see what's going on.

 

[tom2207]

why did you change them in the first place , is it the height your worried about , or the dampening , or a knock .
just getting the basic facts to start with
then answers will be better suited , with luck.

 

[Barking Mat]

All looks correct ?

 

[Barking Mat]

why did you change them in the first place , is it the height your worried about , or the dampening , or a knock .
just getting the basic facts to start with
then answers will be better suited , with luck.

Why, because the one on the rhs, viewed from the back failed it's MOT on that, and a bulb.

That's the one we're looking at, the other side looks ok ish.

I changed them both.

 

[tom2207]

inspect the bottom coil of each spring closely , if its height your worried about , last half a coil can break and be very hard to see ,, no harm in looking at the top very closely while your in that far.

 

[Barking Mat]